Method of measuring parameters of running of rail vehicle, suspension of sensing element of float-type pendulum accelerometer and device for implemting the metod

FIELD: railway transport; instruments.

SUBSTANCE: invention relates to methods of measuring parameters of running of rail trains and to measuring facilities, namely, to float-type compensated pendulum accelerometers with discrete output. According to proposed method, float-type pendulum accelerometer is installed on movable base and axis of sensitivity of accelerometer is aligned with direction of running, and output axis is set vertically, and then float-type suspension of sensing element of hydrostatic type is formed using zero floatability of sensing element. Discrete output signal of float-type pendulum accelerometer is formed and said signal is integrated and signal indicating value of movement of train is obtained. Moreover, output signal of accelerometer at movements of train at slopes and upgrades is corrected.

EFFECT: improved accuracy of measurement of parameter of translation of rail train owing to use of float-type pendulum accelerometer with discrete out6put and accelerometer signal correction circuit.

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1. A method of measuring motion parameters of railway rolling stock" refers to a method of measuring the parameters of the translational motion of railway vehicles moving over the actual relief surfaces.

Sources of information

1. Lokomotivnaja equipment automatic control of braking trains SOUTH of the CM/485. The rotation sensor universal MRF-U. Manual PUAI. 468179.001 re. Instructions for calibration PUAI. 468179/001 FROM. Album No. 3. All 9 albums. NPO SOUTH (620027 Ekaterinburg, Chelyuskintsev 15, of 20, e-mail [email protected], [email protected] www.saut.ru

2. Gilmore and Feldman Eroskop feedback torque for beskanalnyh systems, ballistic missile technology (art)" No. 9, 1970

3. Gelb and Sutherland "Ways to reduce errors beskanalnyh systems caused by errors of girolametto", "art" №6, 1969

3.1. Nikitin, E.A., Balashova A.A. Design of differentiating and integrating gyroscopes and accelerometers, Moscow, Mashinostroyeniye, 1969 (str, prototype)

3.2. Andreichenko KN. Dynamics of floating gyroscopes and accelerometers. Moscow, Mashinostroyeniye, 1987 (prototype).

4. Gorbachev A.L., Krasovskii YA, Nikolaev A.V., Smirnov A.N., Sokolov V.V. Design and reliability of systems of automatics and telemechanics. Minsk Higher school", 1981

5. Copyright Saint who hold no 395717, G 01 19/00 "method of monitoring the health Gidropribor" (prototype).

6. Wrigley, Wholistic, Dinard, Theory, design and testing of gyroscopes. Translation from English. Edited Charlamova, Moscow, Mir, 1972 (Chapter 15, str-400) (additionally identified similar).

Known "Method of measuring motion parameters of railway rolling stock /1/, page 3, includes the installation of the angle sensor dont forget wheelset rolling stock, when moving the base converts the rotation angle of the axis of the wheelset in proportional to the number of pulses used in measuring systems, controlling the direction of movement, distance traveled, speed and acceleration of the rolling stock of railway transport when the rotation speed of the disk axis is not more 2122 with rpm Convert the rotation angle of the axis of the wheelset in proportional to the number of pulses so that they can build up in the sensor two identical channels, the signals of each channel to move between an angle corresponding time-a quarter of the repetition period of pulses, the repetition period being determined by the speed of rotation of the wheel pair, thus forming two channels to determine the direction of movement of the locomotive.

Convert the angle in the number of pulses in the modulation of the optical flux emitted from the th led.

Drive-modulator rotate synchronously with a pair of wheels. The phototransistor located on the same axis with led, converts the optical flux into an electric signal.

The disadvantage of the prototype is a measurement of the speed of movement of the moving structure by measuring the speed of rotation of wheel pairs. The method involves the rotation of the disk modulator synchronously with a pair of wheels during a sudden braking and acceleration due to wheel slippage is entered, the error in the measurement of angular motion. Furthermore, the presence of rotating parts and bearings) suggests a limited lifetime of the instrument and required frequent maintenance.

The task of the technical solutions improving the accuracy of measurement of angular movement of the rolling stock through the use of for these purposes, float pendulum accelerometer and digital output and a contour correction signal of the accelerometer, caused by movement of the composition on an inclined plane. The problem is solved so that the way of measuring motion parameters of railway rolling stock, including the installation of a floating pendulum accelerometer on the movable base has a feature such that when this is combined axis sensitivity of the accelerometer with the direction of its movement, the output is installed vertically, form the floating suspension of the sensitive element of the hydrostatic type, use zero buoyancy sensitive element, forming a feedback loop accelerometer - "electric spring" so that the complete signal of the angle sensor via the amplifier feedback on the torque sensor, when the base motion with acceleration Wx along the axis of sensitivity rejects the float is proportional to the acceleration, generate a signal amplifier feedback in the form of current in the winding of the torque sensor, proportional to the acceleration Wx, integrate the signal amplifier feedback form and when this discrete output signal as output information pulses proportional to the speed Vx of the rolling stock, integrate the discrete output signal and receive a signal about the amount of movement X of the rolling stock, adjust the accelerometer output signal when the moving part on an inclined plane (on the descents and ascents), judge the value of the acceleration Wx largest current in the torque sensor, the size and the change speed of the basis Vx by changing the number N of output information pulses with discrete outputs of the accelerometer, and the amount of movement of the base X the magnitude of the signal at the output of the integrator discrete output signal of the accelerometer, proportionalrepresentation speed Vx and the time t of the motion base.

Integrate the signal amplifier feedback form and when this discrete output signal as output information pulses, so set in the circuit of the torque sensor integrating capacity, while under the influence of acceleration Wx on the sensitive element of the passed current in the torque sensor, and form thus changing the potential difference on the plates of the integrating capacitance, the accumulation of charge on the capacitance is periodically discharged through the current pulses of a certain duration and amplitude generated by the Converter current - pulses, with a discrete output signal in the form of pulses.

Adjust the accelerometer output signal when the moving part on an inclined plane (on the descents and ascents) so that when moving uphill summarize the signal electric coil springs and corrective output signal, and when the motion on the slopes algebraically summed signal electric coil springs and corrective output signal, thus forming a corrective signal proportional to g sinα and served on one of the windings of the torque sensor, angle α the inclination of the plane of travel of the train to the plane of the horizon is determined by the dipmeter, built on the basis of liquid pendulum switch with increased the linear area is castka dependence of its output signal from angle α tilt the plane of motion of the rolling stock to the plane of the horizon. The problem can be solved so that the way of measuring motion parameters of railway rolling stock, including installation of the device on the movable base has a feature such that when this is combined axis sensitivity of the accelerometer with the direction of its motion, and the output axis vertically, forming the floating suspension of the sensitive element of the hydrostatic type, use zero buoyancy of the sensing element, has a feature such that the integrated signal amplifier feedback form and when this discrete output signal as output information pulses, so that the form of positive and negative level of the formation of the current in the control winding of the torque sensor, and thus some form deadband accelerometer angular movements of the float, reject the float relative to the base under the action of the input acceleration Wx until the magnitude of the output signal from the angle sensor will exceed one of the levels of formation of the current in the control winding of the torque sensor, is formed in the torque sensor current of a certain amplitude since the coincidence of increasing signal from the angle sensor with one of the levels of formation of the current in the winding torque sensor (i.e. Nachod is the float outside the dead zone) and until when decreasing the output signal from the angle sensor decreases to the generated level pass current in the control winding of the torque sensor (i.e. when the float between the boundaries of the zone is not sensitive)to measure the residence time of the float outside the dead zone so that strobert ("fill") the interval of time when the float is at the boundary of the zone is not the sensitivity of the information pulses, and thereby form a discrete output signal of the accelerometer in the form of these information pulses.

The novelty. First proposed to determine the speed of the rolling stock by means of high-precision float pendulum accelerometer with digital output and the correction pattern of the output signal when the movement of rolling stock on an inclined plane (on the descents and ascents). This proposed versions of the path of the electrical spring probe current digital code with integrating capacity or rellano pulse feedback circuit type /2/.

Justification of technical solutions. Design float pendulum accelerometer (ACA) is known /3.1, 3.2, 6/. However, analysis of the application of ACA to determine the parameters of the translational motion of railway rolling stock identified specific methodological pogress is here, reflected in the motion on an inclined plane. The essence of the formation error of the ACA is that in addition to the formation of so-called "Satybaldy force"changing the moving speed of the rolling stock the same increment ΔWx=g sinα acceleration Wx acts on matriculate ACA as external measured acceleration Wx. Therefore, it is suggested to estimate the angle of inclination of the plane of movement of the rolling stock to the plane of the horizon and to introduce a correction (adjustment signal) in the path of the electric coil springs. Forming an amendment offered in the simplest way. For this purpose it is proposed to carry out the measurement of the angle of inclination of the plane of motion to the horizontal plane and forming a signal proportional to ΔWx=g sinαand algebraically summed with the signal on the magnitude of the longitudinal acceleration Wx move rolling stock and having a measurement error of acceleration equal to g sinα. The results revealed truncation error is minimized. It should be noted that the proposed solution has analog output to generate an output analog signal proportional to the acceleration Wx, discrete output, the number of pulses which is proportional to the magnitude and change of the measured velocity Vx. This discrete output signal integrate with conventional adder is (counter) pulse form signal, proportional to the displacement X of the rolling stock. All these signals in digital form are presented on the display of the digital display.

Figure 1 - functional diagram of the ACA with the correction pattern methodical error of the accelerometer. Here is displayed: 1 - float units PU (sensitive element ACA), where the unbalanced inertial mass; 2 - angle sensor DN ACA; 3 - torque sensor DM; 4 - out phase-sensitive rectifier FCV feedback circuit PMA; 5 - adjustment circuit QC; 6 - power amplifier ("electric spring"); 7 - input power CONDITION; 8 - threshold device PU; 9 - bridge switch MP; 10 - current regulator ARTICLE; switch (transistor switches) PM marked on it the points - current transducer - digital code with the integrating capacitance C; 11 - modified liquid pendulum switch (MIN) with advanced linear plot of the output voltage dependence on angle α railroad tracks to the plane of the horizon; 12 - adder signals MIN; 13 - out phase-sensitive rectifier circuit correction Fcuk; 14 - amplifier with gain K=g sinα; 15 - amp power AM connected to the winding of the correction OK DM. Wx - acceleration longitudinal movement of rolling stock; N+ and N - is the information pulses discrete outputs ACA characterizing the increment with which oresti. To accelerate Wx information is removed from the analog output of PMA (figure 1 not shown). Analog output ACA organised by the inclusion in the circuit of the MIND-DM resistor, which removed an output signal proportional to the acceleration Wx. Information about the size of the traversed path X of the rolling stock form, by integrating discrete output (DV) signal PMA (summation of information pulses with a DV).

"A method of measuring motion parameters of railway rolling stock is as follows (figure 1).

Install floating pendulum accelerometer on a mobile basis, thus combining axis sensitivity of the accelerometer with the direction of its motion, and the output is installed vertically.

Form the floating suspension of the sensitive element of the hydrostatic type, use zero buoyancy of the sensing element 1 PU.

Form a feedback loop accelerometer - "electric spring" so that the complete signal of the angle sensor 2 through the feedback amplifier (4-5-6) on the torque sensor 3. When the base motion with acceleration Wx along the axis of sensitivity rejects the float 1 is proportional to the acceleration, generate a signal feedback amplifier (4-5-6) in the form of current in the winding of the torque sensor 3, is proportional to the acceleration Wx, interest is their signal amplifier feedback form and when this discrete output signal as output information pulses, proportional to the velocity Vx of the rolling stock. Integrate the discrete output signal and receive a signal about the amount of movement X of the rolling stock (integrator Vx figure 1 is not shown).

Adjust the accelerometer output signal when the moving part on an inclined plane (on the descents and ascents). Judge the value of the acceleration Wx largest current in the torque sensor 3, on the value and change of the speed of the Foundation Vx by changing the number N of output information pulses with discrete outputs of the accelerometer, and the amount of movement of the base X the magnitude of the signal at the output of the integrator discrete output signal of the accelerometer is proportional to the product of the speed Vx and the time t of the motion base.

Integrate the signal amplifier feedback form and when this discrete output signal as output information pulses, so set in the circuit of the torque sensor integrating capacitance C.

While under the influence of acceleration Wx on the sensitive element 1 pass current in the torque sensor, and form thus changing the potential difference on the plates of the integrating capacitance With the accumulation of charge on the capacitance is periodically discharged through the current pulses of a certain duration and amplitude generated by the Converter current - pulses (7-8-9-10, receive the discrete output signal in the form of pulses of N+ and N-.

Adjust the accelerometer output signal when the moving part on an inclined plane (on the descents and ascents) so that when moving uphill summarize the signal electric coil springs and corrective output signal, and when the motion on the slopes algebraically summed signal electric coil springs and the adjustment signal, thus forming a corrective signal proportional to g sinαand serves on one of the windings is OK torque sensor 3. Angle α the inclination of the plane of travel of the train to the plane of the horizon is determined by the dipmeter 11 - modified liquid pendulum switch MIN built based on liquid pendulum switch with a larger area of the linear plot of the dependence of the output signal from the angle α tilt the plane of motion of the rolling stock to the plane of the horizon. This is the first version. Second option: place the device on the movable base, when this is combined axis sensitivity of the accelerometer with the direction of its motion, and the output axis is vertical. Form the floating suspension of the sensing element 1 of the hydrostatic type, use zero buoyancy of the sensing element 1 PMA.

Integrate whitefish is al amplifier (4-5-6) feedback form and when this discrete output signal as output information pulses, so form the positive and negative level of the formation of the current in the control winding of the torque sensor 3 and thus form some deadband accelerometer angular movements of the float 1.

Reject the float 1 relative to the base under the action of the input acceleration Wx until the magnitude of the output signal from the angle sensor 2 will exceed one of the levels of formation of the current in the control winding of the shelter of the torque sensor 2.

Formed in the torque sensor 3 current of a certain amplitude since the coincidence of increasing signal from the angle sensor with one of the levels of formation of the current in the winding of the torque sensor 3 (i.e., the presence of the float 2 for the boundary of the dead zone) and up to the moment when decreasing the output signal from the angle sensor 2 will decrease to the generated level pass current in the control winding) of the torque sensor 3 (i.e. when the float 1 between the boundaries of the zone is not sensitive).

Measure the residence time of the float 1 at the boundary of the dead zone so that strobert ("fill") the interval of time when the float 1 at the boundary of the zone is not the sensitivity of the information pulses, and thereby form a discrete output signal of the ACA in the form of these information pulses N and N+.

The technical result is an increase in accuracy of measurement parameters is s translational motion of the rolling stock through the use of for these purposes, float pendulum accelerometer and digital output and a contour correction signal of the accelerometer, caused by movement of the composition on an inclined plane. The technical effect is obtained by forming a high-precision suspension float ACA hydrostatic type and forming a discrete output signal of the ACA in two versions. Next, integrate the discrete output signal and receive a signal about the amount of movement X of the rolling stock. Adjust the accelerometer output signal when the moving part on an inclined plane (on the descents and ascents).

2. The technical solution of the Method of suspension of the sensitive element of the float pendulum accelerometer and device implementing" refers to the measurement technique, namely the floating pendulum compensation accelerometers (ACA).

Sources of information

2.1. Babayev NF of Items, elements, gyroscopic devices. L.: contribution of shipbuilding, 1962, s.

2.2. USSR author's certificate No. 605181, G 01 P 15/08, 15/13, 1978.

There is a method of excitation friction bearings accelerometer by setting the relative movement of the supports in the direction of rotation of the bearing by using special engine [2.1]. The greatest effect on reducing friction in the accelerometer is characterized by a method consisting in the movement of the supports in the direction of the rotation axis with the electromagnet adopted for the prototype [2.2] to patent No. 2039995. The disadvantage of this pic is BA is incomplete elimination of friction in the bearings, what is the cause noticeable drift of the output signal of the accelerometer.

The aim of the invention according to patent No. 2039995 (prototype) is to improve the accuracy of measurement of the accelerometer. The objective is achieved by the method of excitation friction bearings accelerometer having a housing, a pendulum sensor element, a pin on the sensitive element and the bearing on the housing, the sensor moving coil rotor on the sensitive element and the excitation winding of the stator in the housing, a power generator, a displacement sensor, magneto power Converter with compensation coil on the sensitive element and a magnetic system in the housing, the electromagnet with a field winding, an amplifier, namely, that in the preview test set forced the alternating movement relative to each other trunnion and bearing by filing an alternating current signal from a source of periodic signal to the elements of the accelerometer, those that carry out simultaneous forward movement of the bearing relative to the trunnion in the direction of the axis of rotation of the axle and oscillating angular movement of the axle relative to the bearing by filing monocytotropic alternating current signal from a single source periodic signal in the excitation winding of the electromagnet and the compensation coil the power Converter, when the signal simultaneously from two options polarities enable winding of the stator of the sensor move relative to its power generator, and the rotor coils of the sensor move relative to the input terminals of the amplifier at a constant polarity of the enable winding of the electromagnet and the compensation coil of the power Converter relative to the origin of the periodic signal, the compensation coil of the power Converter relative to the output terminals of the amplifier select polarities enable winding of the stator and rotor coils displacement sensor, which is determined by the measurement results of the output signal of accelerometer drift of the output signal of the accelerometer minimum, include between the source of the periodic signal and the compensating coil of the power Converter phase-shifting element such as a capacitor, phase change the shift between the voltage winding of the electromagnet and the compensation coil by changing the parameters of the phase-shifting element, determine the drift of the signal of the accelerometer according to the results of measurement of the output signal of the accelerometer, choose a phase shift, locking the corresponding parameters of the phase-shifting element, in which the drift signal acceleromet is and the minimum, moreover, in the operation mode selection polarity and phase is not performed.

When performing simultaneous translational movement of the bearing relative to the trunnion in the direction of the axis of rotation of the axle and oscillating angular movement of the axle relative to the bearing by filing monocytotropic alternating current signal from a single source periodic signal in the excitation winding of the electromagnet and the compensation coil power conversion with selected polarities enable winding of the stator displacement sensor and the coil of the rotor displacement sensor and the selected value of the phase shift between the voltage winding of the electromagnet and the compensation coil is provided to the extent possible, the total movement in two directions of movement of the axle relative to the bearing, which increases the speed of its movement and reduces friction in the bearing. This reduces the drift of the output signal of the accelerometer and improves the accuracy of the measurements of the accelerometer.

The disadvantage of the prototype is the reduction of friction in the bearings of the output axis by creating a reciprocating movement in the bearings of the output axis of the accelerometer. I.e. reduce friction due to the fact that fighting is not the cause but the consequence of its manifestations. The cause of the symptoms of Tr is con - this residual non-zero buoyancy sensitive element of the accelerometer, which leads to a mechanical contact in kunevich supports output axis accelerometer. At the same time to minimize friction relative to the output axis is necessary to minimize the effects of non-zero residual buoyancy of the sensing element in the formation of a mechanical contact in the bearings of the output axis. To do this we need to create conditions so that the float accelerometer was suspended within the radial gap supports the output axis. I.e. it is necessary to adjust the float so that the float did radial movement in its bearings there would be no interaction of their elements. For this purpose it is necessary and sufficient to change the mass displaced by the float fluid in the axial direction within the end clearance of the float and the housing depending on the axial radial position of the float relative to the supports output axis. On the other hand, estimating the speed of radial pereplyvi float you can find the mass displaced by the float of the liquid such that the speed of radial pereplyvi (translational motion) rushed to zero. As a result of such events, the float will either sink or float in the gravity field (1 solution) between the supports output the axis or "freeze" (option 2) at a certain position between the supports. When the temperature changes (not oborina version) density supporting the float of the liquid will change and therefore the regulation of the mass displaced by the float of the liquid will be implemented as changes in the density and temperature. On the first version of the solution will change the intensity of the radial pereplyvi sensitive element of the accelerometer. In the second variant of the solution to the tracking system will determine the new speed perepilivanija and again will set the mass displaced by the float of the liquid such that it was minimized. I.e. float again "freeze" in position between the supports output axis. As a result, the friction torque of the supports relative to the output axis will be minimized.

On the other hand not oborina option for stabilization of the dynamic characteristics of the accelerometer, i.e. the viscosity of the liquid, is forced to choose supporting liquid of relatively low viscosity and has a weak dependence on the ambient temperature. This can be significantly reduced damping factor of the angular movements of the float accelerometer and thereby the deterioration of its dynamic characteristics. To increase the damping coefficient is proposed here to use the mode of compression of the fluid layer between the float and the housing unit. For this purpose, the sensor of angular velocity PR who was lagalos to use the "ribbed" float and the housing. The "ribs" of the float was proposed to place in the slots on the chassis of the angular rate sensor. Here it is proposed to develop this idea and extend it to the suspension float pendulum accelerometer. Depending on the desired damping ratio of the number of ribs to change and thereby to control the damping coefficient of angular motion around an output axis of the accelerometer. Feature hydrostatic suspension accelerometer is that in the absence of forced oscillations of the float, due to the forced oscillations of the rotor gyrometer, as in the angular rate sensor, here the "recovery" supports output axis oscillations will not occur and therefore, the contact elements of the supports should be minimized by minimizing (regulation aspirations to zero) residual current not zero buoyancy. Also in the suspension float pendulum accelerometer compression effect of the float accelerometer liquid layers translational movements will be minimized and therefore to produce the required damping ratio using the "ribbed" float and hull ACA is even more important.

The objective of this part of the technical solutions of the suspension float pendulum accelerometer - enhanced accuracy due to complete at the hraneniya of the friction torque in the centering supports float suspension SE and to provide a specified damping ratio of angular motion of the float relative to the output axis without oborina version.

The first option. The solution of the problem in the way of suspension SE accelerometer, which consists in hydrostatic unloading of the supports sliding friction SE, has a feature such that set the motion sensor float relative to the housing of the device, form two boundaries changes the buoyancy of the float within the radial clearance supports output axis, the signals of this sensor to monitor the movement of the float within the gap supports the output axis until the coincidence signal from the sensor with one of the boundaries changes of buoyancy, at this point in time, form a positive or negative increment of the volume of float depending pop up float or sink in its supporting fluid and thereby change the mass displaced by the float of the liquid and the sign of the buoyancy of the float on the opposite, then follow the movement of the float relative to the housing until the float moves to a position coincident with the other boundary changes of buoyancy, thus re-shaping the volume increment float depending pop up float or sink in its supporting fluid and thereby again changing the mass displaced by the float of the liquid and the sign of the buoyancy of the float on the opposite, then the configuration process buoyancy SE again. Fictionliterature of emersion and immersion SE is a continuous periodic non-contact process, carried out throughout the operation of the device.

Floating pendulum accelerometer, which implements the above method includes placing a cylindrical sealed float in the cylindrical chamber when filling gaps between them of a viscous incompressible fluid, ensuring the buoyancy of the float, close to neutral, has a feature such that the body of the instrument and float are the sensor elements relative displacements connected with through out phase-sensitive amplifier with three-position threshold device whose outputs are connected through the switching elements of the bridge switch with the windings of the force sensor, fixed to the end portions of the float, and its forming is performed with a pair of elastic elements (bellows) or end cap - elastic membranes, when this second diagonal of the bridge switch is turned on, the current regulator.

The second option. To solve the problem in the way the SE suspension, which consists in hydrostatic unloading of the supports sliding friction SE, install the sensor movements of the float relative to the housing of the device, determine the rate of change of the signal from the sensor and proportional to this speed can form a positive or negative increment of the volume of the float, then continue to monitor the speed of the change of the signal from the sensor relative movements of the float and the housing and, depending on the sign and magnitude of the speed re-form a positive or negative increment of the volume of the float, then the process is repeated. The periodicity of the process in this case may be due to a change in fluid density with temperature changes, especially in the float devices without thermal control system.

Floating pendulum accelerometer, which implements the above method includes placing a cylindrical sealed float in the cylindrical chamber, thus filling the gaps between them of a viscous incompressible fluid, provide the buoyancy of the float, close to neutral, has a feature such that the body of the instrument and float are the elements of the motion sensor, and the output of the motion sensor is connected to the out phase-sensitive amplifier and through the amplifier to the coils of the force sensor, fixed to the end portions of the float, and its forming is performed with a pair of end elastic elements (bellows) or end cap - elastic membranes.

A third option. The method of suspension of the sensitive element of the accelerometer, which consists in hydrostatic unloading supports the sliding friction of the output axis of the sensitive element has a feature such that the cylindrical surface of the float are in the form of alternating ridges and grooves, and the body of the accelerometer also perform with alternating grooves and protrusions, and the protrusions of the float and the protrusions of the housing of the accelerometer razmisha is t, accordingly, in the slots of the housing of the accelerometer and the grooves of his float during angular motion of the float is formed in addition to the viscous friction surfaces of the casing and float mode squeezing liquid layers between them and thereby increase the damping ratio of the angular movements of the float;

2 is a Structural diagram of a PMA device regulation buoyancy SE. Here, 1 is a cylindrical float; 2 - the gap between the float chamber 3 and the float 1; 4 - sensor movements of the float relative to the camera, R - balanced resistors motion sensor; 5 - permanent magnets of the force sensor; 6 - winding forming a current sensor power; F - force, deforming the body of the float; the vector of magnetic induction; 7 - out phase-sensitive amplifier and rectifier (FCV) signal of the motion sensor; 8 - threshold device PU; 9 - bridge switch; 10 - current stabilizer (ST); 11 - power amplifier MIND; UUP - output voltage sensor movements of the float relative to the housing of the device. 1*-2* - terminals of the windings forming the current sensor strength.

Figure 3. Transverse section of the "ribbed" float. 1 - body ACA; 2 - body float with the tabs 2.1; 3 - intermediate cylindrical element with grooves 3.1 projections 3.2. This element is introduced in the proposed scheme suspension as an option to increase the damping coefficient due to the expansion of the number of edges and grooves.

The NOVELTY. First proposed to regulate buoyancy "ribbed" float ACA measurement process input progressive influences.

The method includes the following steps and is implemented using the proposed device (2)

in the way of suspension SE accelerometer, which consists in hydrostatic unloading of the supports sliding friction sensitive element having a feature such that

- install motion sensor 4 of the float relative to the housing of the device,

form two boundaries changes the buoyancy of the float 1 within the radial clearance supports output axis,

- on signals of the sensor 4 follow the movement of the float 1 within the gap supports the output axis until the coincidence signal from the sensor 4 with one of the boundaries changes in buoyancy,

- at this point in time form a positive or negative increment of the volume of the float 1 depending pop up float 1 or drowned in the supporting liquid and thereby change the mass displaced by the float 1 fluid and the sign of the buoyancy of the float on the opposite, then

again follow the movement of the float 1 relative to the housing 3 until the float 1 will not move to the position coinciding with the other boundary changes of buoyancy, while re -

- form nature is the incarnation of the volume of the float 1 depending pop up float or sink in its supporting fluid and thereby again changing the mass displaced by the float of the liquid and the sign of the buoyancy of the float 1 on the opposite, next, the configuration process buoyancy SE again. In fact, the alternation of emersion and immersion SE is a continuous periodic contactless process carried out throughout the operation of the device.

Floating pendulum accelerometer, which implements the above method includes placing a cylindrical sealed float 1 in the cylindrical chamber 3, while filling gaps between them of a viscous incompressible fluid, ensuring the buoyancy of the float 1, close to neutral, has a feature such that the housing unit 3 and the float 1 are elements of the sensor 4 relative displacements, United through out phase-sensitive amplifier 7 with three-point threshold device 8, the outputs of which connect through the switching elements of the bridge switch 9 with the windings of the force sensor 6, fixed to the end portions of the float 1 (see (g)), and its forming made with a pair of elastic elements 1.1 (bellows) or end cap - elastic membranes, while the second diagonal of the bridge switch 9 is enabled, the current regulator 10.

The second option. To solve the problem in the way the SE suspension, which consists in hydrostatic unloading of the supports sliding friction SE,

- install the sensor 4 movements of the float 1 relative to the body 3 of the device, about Radelet the rate of change of the signal from the sensor 4 and is proportional to this speed,

- form a positive or negative increment of the volume of the float 1,

next continue to monitor the rate of change of the signal from the sensor 4 relative movements of the float 1 and the housing 3 of the device and depending on the sign and magnitude of the speed re-form a positive or negative increment of the volume of the float 1, then the process is repeated.

Note. The periodicity of the process in this case may be due to a change in fluid density with temperature changes, especially in the float devices without thermal control system.

Floating pendulum accelerometer, which implements the above method includes placing a cylindrical sealed float 1 in the cylindrical chamber 3, thus fill the gaps 2 between viscous incompressible fluid, provide the buoyancy of the float 1, close to neutral, has a feature such that the housing 3 of the device and the float 1 are elements of the sensor 4 moves, and the output of the sensor 4 moves connects to out phase-sensitive amplifier 7 through the amplifier 11 to the coils of the sensor 6 power DC - DG, fixed to the end portions of the float 1, and its forming is performed with a pair of end elastic elements 1.1 (bellows) or end cap - elastic membranes.

The method of suspension of sensitive elementalslayer, consisting of hydrostatic unloading supports the sliding friction of the output axis of the sensitive element has a feature such that

- cylindrical surface of the float are in the form of alternating ridges and grooves,

and the body of the accelerometer also perform with alternating grooves and protrusions, and the protrusions of the float and the protrusions of the housing of the accelerometer is placed, respectively, in the slots of the housing of the accelerometer and the grooves of his float;

- during angular motion of the float is formed in addition to the viscous friction surfaces of the float and the housing mode squeezing liquid layers between them and thereby increase the damping ratio of the angular movements of the float.

Technical result - increase accuracy by eliminating the friction torque in the centering supports float suspension SE and the provision of controlled quantity of buoyancy for the implementation of contactless suspension "ribbed" float. The technical effect of the solution lies in the formation of contactless float suspension and application "ribbed" floats and hulls ACA.

1. A method of measuring motion parameters of railway rolling stock, including the installation of a floating pendulum accelerometer on the movable base, wherein when it is combined axis sensitivity of the accelerometer with the direction of its movement is to be placed, and the output axis is set vertically, forming the floating suspension of the sensitive element of the hydrostatic type, use zero buoyancy sensitive element, forming a feedback loop accelerometer - electric spring so that the close signal of the angle sensor via the amplifier feedback on the torque sensor, when the base motion with acceleration Wx along the axis of sensitivity rejects the float is proportional to the acceleration, generate a signal amplifier feedback in the form of current in the winding of the torque sensor, proportional to the acceleration Wx, integrate the signal amplifier feedback form and when this discrete output signal as output information pulses proportional to the speed Vx of the rolling stock, integrate, and receives a signal about the amount of movement X of the rolling stock, besides correcting the output signal of the accelerometer when moving stock on the descents and ascents, judge the value of the acceleration Wx largest current in the torque sensor, about the size and rate of change of the speed of the Foundation of the Vx - change the number N of output information pulses with discrete outputs of the accelerometer, and the amount of movement of the base X the magnitude of the signal at the output of the integrator discrete output signal of the accelerometer is proportional to PR is the playback speed Vx and the time t of the motion base.

2. A method of measuring motion parameters of railway rolling stock according to claim 1, characterized in that integrates the signal amplifier feedback form and when this discrete output signal as output information pulses, so set in the circuit of the torque sensor integrating capacity, while under the influence of acceleration Wx on the sensitive element of the passed current in the torque sensor, and form thus changing the potential difference on the plates of the integrating capacitance, the accumulation of charge on the capacitance is periodically discharged through the current pulses of the stabilizer of a certain duration and amplitude generated by the Converter current - pulses, and receive discrete output signal in the form of pulses.

3. A method of measuring motion parameters of railway rolling stock according to claim 1, wherein adjusting the output signal of the accelerometer when moving stock on the descents and ascents so that when moving uphill summarize the electric signal spring and corrective output signal, and when the motion on the slopes algebraically summed electrical signal spring and corrective output signal, thus forming a corrective signal proportional to g sinα and served on one of the windings of the sensor points is a, angle α the inclination of the plane of travel of the train to the plane of the horizon is determined by the dipmeter, built on the basis of liquid pendulum switch with a larger area of the linear plot of the dependence of the output signal from the angle α tilt the plane of motion of the rolling stock to the plane of the horizon.

4. A method of measuring motion parameters of railway rolling stock, including the installation of a floating pendulum accelerometer on the movable base, wherein when it is combined axis sensitivity of the accelerometer with the direction of its motion, and the output axis is set vertically, forming the floating suspension of the sensitive element of the hydrostatic type, use zero buoyancy sensitive element, integrate the signal feedback amplifier float device and form thus a discrete output signal as output information pulses, so that the form of positive and negative level of the formation of the current in the control winding of the torque sensor and thereby form the deadband accelerometer angular movements of the float, reject the float relative to the base under the action of the input acceleration Wx until the magnitude of the output signal from the angle sensor will be more than one level of the second formation current in the control winding of the torque sensor, formed in the torque sensor current of a certain amplitude since the coincidence of increasing signal from the angle sensor with one of the levels of formation of the current in the winding of the torque sensor when the float is outside the dead zone and up to the moment when decreasing the output signal from the angle sensor decreases to the generated level pass current in the control winding of the torque sensor when the float between the boundaries of the dead zone, the measured time float outside the dead zone so that strobert interval time float outside the dead-band information pulses, and thereby form a discrete output signal of the accelerometer in the form of these information pulses.

5. The method of suspension of the sensitive element of the float pendulum accelerometer hydrostatic type, which consists in hydrostatic unloading supports the sliding friction of the float, wherein the set sensor movements of the float relative to the housing of the device, form two boundaries changes the buoyancy of the float within the radial and axial clearances supports output axis, the signals of this sensor to monitor the movement of the float within the gap supports the output axis until the coincidence signal from the sensor with one and the border changes of buoyancy, at this point in time, form a positive or negative increment of displacement of the float in the matter, pop up float or sink in its supporting liquid, and thereby change the mass displaced by the float of the liquid and the sign of the buoyancy of the float on the opposite, then follow the movement of the float relative to the housing until the float will move to the position coinciding with the other boundary changes of buoyancy, thus re-shaping the volume increment of float depending on, pop up float or sink in its supporting liquid, and thereby again changing the mass displaced by the float of the liquid and the sign of the buoyancy of the float on the opposite, then adjust the buoyancy of the float is repeated throughout the operation of the device.

6. Floating pendulum accelerometer includes placing a cylindrical sealed float in the cylindrical chamber, at the same time filled the gap between them of a viscous incompressible fluid, providing the buoyancy of the float, close to neutral, characterized in that on the housing of the accelerometer and float are the sensor elements relative displacements, United through out phase-sensitive amplifier with three-position threshold device, the outputs of which are connected through the com is yousie elements of the bridge switch with the windings of the force sensor, fixed to the end portions of the float, and its forming is performed with a pair of elastic elements - bellows or end cap - elastic membranes, while the second diagonal of the bridge switch is turned on, the current regulator.

7. The method of suspension of the sensitive element of the accelerometer, which consists in hydrostatic unloading supports the sliding friction of the sensing element, wherein installing the sensor movements of the float relative to the housing of the device, determine the rate of change of the signal from the sensor and proportional to this speed can form a positive or negative increment of the volume of the float, then continue to monitor the rate of change of the signal from the sensor relative movements of the float and the housing and, depending on the sign and magnitude of the speed re-form a positive or negative increment of the volume of the float, then the process is repeated throughout the operation of the device.

8. Floating pendulum accelerometer includes placing a cylindrical sealed float in the cylindrical chamber, at the same time filled the gap between them of a viscous incompressible fluid, providing the buoyancy of the float is close to neutral, characterized in that on the housing unit and float are the elements of the motion sensor, and the output of Yes is Chica movements connects to out phase-sensitive amplifier and through the amplifier to the coils of the force sensor, fixed to the end portions of the float, and its forming is performed with a pair of end-elastic elements - bellows or end cap - elastic membranes.

9. The method of suspension of the sensitive element of the accelerometer, which consists in hydrostatic unloading supports the sliding friction of the output axis of the sensing element, characterized in that the cylindrical surface of the float are in the form of alternating ridges and grooves, and the body of the accelerometer also perform with alternating grooves and protrusions, and the protrusions of the float and the protrusions of the housing of the accelerometer is placed, respectively, in the slots of the housing of the accelerometer and the grooves of his float during angular motion of the float is formed in addition to the viscous friction surfaces of the float and the housing mode squeezing liquid layers between them and thereby increase the damping ratio of the angular movements of the float.