Digital modular for control over synchronous motor. RU patent 2517423.
 Method of detecting broadband signals and device for realising said method / 2470459Invention relates to radio engineering and particularly to methods and devices for detecting broadband signals in radio communication systems, and can be used in receivers of radio electronic communication systems using phase-shift keyed signals. The technical result is achieved using a method of detecting a phase-shift keyed broadband signal, involving reception of an input signal with subsequent integration, comparison of the obtained signal with a threshold level and determining presence or absence of a signal at the input of the detector. Before integration, the received signal is inverted and switched in order to remove broadband modulation. The device for detecting broadband signals has a signal sample generator, a maximum signal detector, a control unit, wherein the input of the signal sample generator is connected to the output of the control unit, the input of the control unit is connected to the output of the maximum signal detector. |
 Method and device for processing pulse width modulated signals / 2467476Invention relates to a signal processor with a scaled analogue signal. The technical result is achieved through dynamic scaling of a bit stream in order to provide an accurate second signal in situations when the first signalling basically does not match the second signalling. A signal processor is provided. The signal processor is configured to receive a first analogue signal and convert it to a digital signal. The digital signal is transmitted through an electrical barrier. The signal processor generates a scaled pulse width modulated signal based on differences between encoding of the first analogue signal and encoding of the second analogue signal based on the digital signal. The processor also converts the scaled pulse width modulated signal to a second analogue signal. |
 Linear pulse width converter with two outputs on digital microchips - schmitt trigger and two inverters / 2409891Invention refers to pulse width converters (PWC) on the basis of Schmitt triggers and can be used at the development of stable pulse power sources, in PWM (pulse width modulation) wires of direct current motors, in pulse computing systems and other devices of measurement equipment and automation. |
 Signal transmission method / 2384939Invention relates to data transmission and can be used to transmit data from downhole sensors in oil and gas production industry. The system for transmitting electrical signals has a modulator, a demodulator and a variable signal transmission channel. The demodulator can receive an input parametre and encode it in a varying signal with repeating rising and falling fronts, as well as send a reference signal with known duration before sending the information signal. The demodulator can determine duration of the reference signal and the information signal, calculate calibration error of the system from duration of the reference signal, record this error and subtract it from subsequent information signals. |
 Pulse-width signal shaping technique / 2341016Invention refers to pulse work and can be used in pulse width converter control systems. Technique is characterised by that sequence of modulation period is specified. Reference signal is extended within each modulation period. Control signal within modulation period is compared to reference signal. Output pulse is formed within each modulation period during difference constant-sign interval of reference signal and average value of control signal for which pass band is specified ΔSy = (Umax-Umin) of maximum allowed value Umax to minimum allowed value Umin. Reference signal is compared either to instantaneous control signal if the latter are within specified pass band ΔSy, or to average control signal if instantaneous values of the latter falls beyond specified pass band ΔSy. |
 Method of two analogue signals product conversion into pulse-duration signal / 2331922Method is characterised by pulse-duration conversion of the first analogue signal by comparing it with the first triangular signal and generation of the first pulse-duration signal having logical item level within one interval if the first triangular signal level is exceeded by the first analogue signal level and having logical zero level in the other interval if the first triangular signal level is below the first analogue signal level. Pulse-duration conversion of the second analogue signal is compared with the second triangular signal and the second pulse-duration signal is generated having logical item within one interval if the second triangular signal level is exceeded by the second analogue signal level and having logical zero level within the other interval if the second triangular signal level is below the second analogue signal. Additionally, logical multiplication of the first and second pulse-duration signals is performed and logical levels are generated corresponding to time intervals when logical levels of the first and second pulse-duration signals coincide or do not coincide, with period of the second triangular signal not equal to the period of the first triangular signal. |
 Frequency-current transformer (variants) / 2321163Technical effect is achieved by separation of circuit of generation of impulses, with dosed charge, from the circuit of positive check connection of current-controlled current supply which generates currents of the device. Frequency-current transformer contains generator of clock impulses (1), which generates short impulses from fronts of impulses of frequency being transformed, low frequency filter (8,9), launching current supply (10), which ensures nonzero starting value of current at the output of low frequency filter and which is disabled when device launches, mono-stable multi-vibrator, which consists of integrating capacitor (4), switch (5) for discharging integrating capacitor (4), switch (6) for bridging the input of low frequency filter, device for comparing voltage (2) on integrating capacitor (4) and supporting voltage Uo, memorizing device (3), which closes switches (5,6) when voltages are equal in comparison device (2) and opens switches (5,6) when return to initial state is caused by impulses of clock impulse generator (1). Introduced to the transformer is a current-controlled current supply (7), which ensures output current in external load (11) and deflects the control current of current-receiving input (i), which is connected to the output of low frequency filter, to separate outputs, one of which provides current of discharge of integrating capacitor (4) connected to it, and second one, which is connected to the input of low frequency filter and has current transfer coefficient equal to or greater than one, constitutes the check connection contour, which generates current for controlling the current-controlled current supply. |
 Impulse-porosity modulator / 2321162In accordance to the invention, device is capable of maintaining porosity of output series impulses equal to transmission coefficient of current-controlled current supply, enveloped by check connection. Transmission coefficient of current-controlled current supply is regulated by modulating signal and is a function of modulating voltage. |
 Method for controlling bridge inverter with one-sided pulse-width modulation and device for its realization / 2309525In accordance to the invention, energy consumption mode is realized by enabling key elements of required diagonal of key elements block, recuperation mode is realized by disabling all key elements, and pause mode is realized by enabling one key element of bridge inverter. |
 Two-sided pulse-width modulator for bridge inverter / 2309524In the bridge inverter to generate output voltage it is enough to control condition of key elements of working diagonal only, and on modulation period, to control enabling and disabling of one of key elements, preventing occurrence of through currents, for even load of key elements an alternating method is suggested for disabling key elements of working diagonal. |
 Periodic sweep unit for pulse servoconverter / 2254663Proposed servoconverter that incorporates provision for reducing error in periodic sweep signal generation when running in follow-up modes has unit for discriminating filter choke actuating voltages, time-periodic signal unit, two multiplying units, two scaling amplifiers, two adders, and decoder. |
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Two-sided pulse-width modulator for bridge inverter / 2309524 In the bridge inverter to generate output voltage it is enough to control condition of key elements of working diagonal only, and on modulation period, to control enabling and disabling of one of key elements, preventing occurrence of through currents, for even load of key elements an alternating method is suggested for disabling key elements of working diagonal. |
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Method for controlling bridge inverter with one-sided pulse-width modulation and device for its realization / 2309525 In accordance to the invention, energy consumption mode is realized by enabling key elements of required diagonal of key elements block, recuperation mode is realized by disabling all key elements, and pause mode is realized by enabling one key element of bridge inverter. |
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Impulse-porosity modulator / 2321162 In accordance to the invention, device is capable of maintaining porosity of output series impulses equal to transmission coefficient of current-controlled current supply, enveloped by check connection. Transmission coefficient of current-controlled current supply is regulated by modulating signal and is a function of modulating voltage. |
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Frequency-current transformer (variants) / 2321163 Technical effect is achieved by separation of circuit of generation of impulses, with dosed charge, from the circuit of positive check connection of current-controlled current supply which generates currents of the device. Frequency-current transformer contains generator of clock impulses (1), which generates short impulses from fronts of impulses of frequency being transformed, low frequency filter (8,9), launching current supply (10), which ensures nonzero starting value of current at the output of low frequency filter and which is disabled when device launches, mono-stable multi-vibrator, which consists of integrating capacitor (4), switch (5) for discharging integrating capacitor (4), switch (6) for bridging the input of low frequency filter, device for comparing voltage (2) on integrating capacitor (4) and supporting voltage Uo, memorizing device (3), which closes switches (5,6) when voltages are equal in comparison device (2) and opens switches (5,6) when return to initial state is caused by impulses of clock impulse generator (1). Introduced to the transformer is a current-controlled current supply (7), which ensures output current in external load (11) and deflects the control current of current-receiving input (i), which is connected to the output of low frequency filter, to separate outputs, one of which provides current of discharge of integrating capacitor (4) connected to it, and second one, which is connected to the input of low frequency filter and has current transfer coefficient equal to or greater than one, constitutes the check connection contour, which generates current for controlling the current-controlled current supply. |
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Method of two analogue signals product conversion into pulse-duration signal / 2331922 Method is characterised by pulse-duration conversion of the first analogue signal by comparing it with the first triangular signal and generation of the first pulse-duration signal having logical item level within one interval if the first triangular signal level is exceeded by the first analogue signal level and having logical zero level in the other interval if the first triangular signal level is below the first analogue signal level. Pulse-duration conversion of the second analogue signal is compared with the second triangular signal and the second pulse-duration signal is generated having logical item within one interval if the second triangular signal level is exceeded by the second analogue signal level and having logical zero level within the other interval if the second triangular signal level is below the second analogue signal. Additionally, logical multiplication of the first and second pulse-duration signals is performed and logical levels are generated corresponding to time intervals when logical levels of the first and second pulse-duration signals coincide or do not coincide, with period of the second triangular signal not equal to the period of the first triangular signal. |
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Pulse-width signal shaping technique / 2341016 Invention refers to pulse work and can be used in pulse width converter control systems. Technique is characterised by that sequence of modulation period is specified. Reference signal is extended within each modulation period. Control signal within modulation period is compared to reference signal. Output pulse is formed within each modulation period during difference constant-sign interval of reference signal and average value of control signal for which pass band is specified ΔSy = (Umax-Umin) of maximum allowed value Umax to minimum allowed value Umin. Reference signal is compared either to instantaneous control signal if the latter are within specified pass band ΔSy, or to average control signal if instantaneous values of the latter falls beyond specified pass band ΔSy. |
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Signal transmission method / 2384939 Invention relates to data transmission and can be used to transmit data from downhole sensors in oil and gas production industry. The system for transmitting electrical signals has a modulator, a demodulator and a variable signal transmission channel. The demodulator can receive an input parametre and encode it in a varying signal with repeating rising and falling fronts, as well as send a reference signal with known duration before sending the information signal. The demodulator can determine duration of the reference signal and the information signal, calculate calibration error of the system from duration of the reference signal, record this error and subtract it from subsequent information signals. |
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Linear pulse width converter with two outputs on digital microchips - schmitt trigger and two inverters / 2409891 Invention refers to pulse width converters (PWC) on the basis of Schmitt triggers and can be used at the development of stable pulse power sources, in PWM (pulse width modulation) wires of direct current motors, in pulse computing systems and other devices of measurement equipment and automation. |
FIELD: engines and pumps.
SUBSTANCE: modulator comprises rectangular pulse generator, counters, OR elements, triggers, inverter, limiting circuit, decoders, pulse shapers, AND elements, reset circuit, adders, registers, AND-NO elements, binary-sextic counter, input signal bus, sign bus, bus of the signal describing engine design version, rotor position transducer signal bus and output buses.
EFFECT: control over rpm in DC brushless motor mode in response to rotor position transducer signals.
5 dwg
The invention relates to the field of pulse technique and can be used in power converters for control systems of synchronous motors and sensors rotor position.
The closest to the technical nature of a digital modulation frequency Converter for asynchronous motor (see RF patent №2216850, publ. 20.11.2003, bul. №32)containing pulser, four counter, three trigger, four elements, OR, inverter, two elements And the six elements AND-NO, three decoder, two pulse shaper, two adder, two registers, binary-sextuple counter, schema restrictions and reset circuit.
The disadvantage is closest digital modulator is that he can control synchronous electric motor only by changing the frequency of the supply voltage connected to the stator windings. At the same time, to adjust the speed synchronous machine mode brushless DC motor signals position sensor rotor device, taken as a prototype, it can't.