Shaft angle-of-turn-to-code converter

FIELD: computer engineering; angle-of-turn-to-code converters and data processing systems.

SUBSTANCE: proposed converter has synchro resolver transducers, switching unit, four integrators, voltage-to-code ratio functional converter, threshold elements, 4AND-NOT gate, integrator start and stop unit, counter, two inverters, two selector switches, and NOT gate.

EFFECT: enhanced speed of converter.

1 cl, 2 dwg

 

The invention relates to the field of computer technology, in particular to the converters of the angle of rotation of the shaft in the code, and can be used in data processing systems.

Known transducer angle shaft code containing sine-cosine transformer sensor, selector octanol summarizing large-scale amplifiers, linear reproduction device, a summing unit, a large-scale device, a comparator, a register and a control unit (see A.S. USSR №416717, CL. G 08 C 9/00, 1974).

The disadvantage of the Converter is its complexity, low accuracy and low performance.

Closest to the invention to the technical essence and the achieved result is a transducer angle of rotation of the shaft in the code adopted for the prototype and contains (see A.S. USSR №481929, CL. G 08 C 9/04, 1975) sine-cosine transformer sensors whose outputs are connected to inputs of the switch, the first and second outputs of which are connected respectively to the inputs of the first and second integrators directly and through pairwise connected threshold elements to the inputs of the element 4I, the output of which is connected to the input of the block start and stop integrators, the output of which is connected to the control input of the functional Converter the ratio of the voltage in the code and to the control inputs of the first and second and is tegration, the outputs are connected to the inputs of the functional Converter the ratio of the voltage in the code, the outputs of which are the output of the Converter.

The disadvantage of the Converter is low performance.

The purpose of the invention is improving the performance of the Converter.

This objective is achieved in that the inverter rotation angle of the shaft in the code that contains the sine-cosine transformer sensors whose outputs are connected to inputs of the switch, the first and second outputs of which are connected respectively to the inputs of the first and second integrators directly and through pairwise connected threshold elements to the inputs of the element 4I, the output of which is connected to the input of the block start and stop integrators, the output of which is connected to the control inputs of the first and second integrators, functional Converter the ratio of the voltage in the code, the outputs of which are the output of the Converter, put the first and second inverters, the third and fourth integrators, the first and second switches, and the item is NOT a counter, an input connected with the control input of the functional Converter the ratio of the voltage in the code and is connected to the output element 4I, and outputs connected to the control inputs switch inputs of the first and second inverters are connected with the responsibly to the first and second outputs of the switch, and outputs connected respectively to the inputs of the third and fourth integrators, control inputs are combined, connected to control inputs of the first and second switches and is connected to the output element, the input of which is connected to the output of the block start and stop integrators, the first inputs of the first and second switches connected respectively to the outputs of the first and second integrators, the second inputs connected respectively to the outputs of the third and fourth integrators, and outputs connected to the inputs of the functional Converter the ratio of the voltage in the code.

Converter block diagram is shown in figure 1, the timing diagram of his work - in figure 2.

The inverter rotation angle of the shaft into the code contains a sine-cosine transformer sensors 1, switch 2, the first 3 and second 4 integrators, functional Converter 5 the ratio of the voltage in the code, the threshold elements 6 and 7, the element 4I-8, block 9 starting and stopping of the integrators, the counter 10, the first 11 and second 12 inverters, the third 13 and fourth 14 integrators, the first 15 and second 16 switches and the item is NOT 17.

The outputs of the sine-cosine transformer sensors 1 are connected to inputs of the switch 2, the first and second outputs of the switch 2 are connected respectively to the inputs of the first 3 of the integrator and the first 11 inv the Torah and with the inputs of the 4 second integrator and a second inverter 12 directly and through pairwise connected threshold elements 6 and 7 with the inputs of the element 4I-8 the output element 4I-8 is connected with the control input of the functional Converter 5 the ratio of the voltage in the code with the input unit 9 starting and stopping integrators and to the input of the counter 10, the outputs of the counter 10 is connected to control inputs of the switch 2, the outputs of the first 3 and second 4 integrators respectively connected with the first inputs of the first 15 and second 16 switches, the outputs of the first 11 and second 12 inverters are connected respectively to the inputs of the first 13 and second 14 integrators, the outputs of the third 13 and fourth 14 integrators respectively connected with the second inputs of the first 15 and second 16 switches, the output of block 9 starting and stopping of integrators connected to control inputs of the first 3 and second 4 integrators and to the input element 17, the output element 17 is connected to control inputs of the third 13 and fourth 14 integrators and control inputs of the first 15 and second 16 switches, the outputs of the first 15 and second 16 switches connected to the inputs of the functional Converter 5 the ratio of the voltage in the code, the functional outputs of the Converter 5 the ratio of the voltage in the code are the outputs of the Converter.

The inverter rotation angle of the shaft into the code works as follows.

When the rotation shaft sine-cosine transformer sensors 1 at some angle B1; i stress with their output windings proportional to sinαi and cosαi, through the switch 2, according to the selected counter 10 address corresponding to a particular input parameter, sequentially in time are connected respectively to the inputs of the first 3 and second 4 integrators directly and through the first 11 and second 12 inverters with transmission ratios equal to one, respectively, to the inputs of the third 13 and fourth 14 integrators.

The first 3 and second 4 integrators integrate the input voltage outputs of odd (k=n+1, where n=0, 2, 4 ...; k is the number of sine-cosine transformer sensors 1) sine-cosine transformer sensor 1 during the first half period of the signal voltage that provides a threshold elements 6 and 7 are configured in pairs on the positive and negative threshold voltage, the element 4I-8 and unit 9 starting and stopping integrators and thereby eliminates error from quadrature component and higher harmonics that are multiples of two. As a result of integrating the outputs of the first 3 and second 4 integrators received

where Um is the amplitude value of the output signal voltages;

αi is the angle of a sine-cosine transformer sensors 1.

In the same (first) half-period signals the output voltages of the outputs of the third 13 and fourth 14 integrators through one of the contacts of the first 15 and second 16 switches respectively control signal from the output element 17 (smpeg) are connected to the inputs of the functional Converter 5 the ratio of the voltage in the code that the control signal from the output element 4I-8 encoding produces stress and preparation of the respective integrators for the next cycle of integration.

The third 13 and fourth 14 integrators integrate the input voltage outputs of the even (k= n, where n=0, 2, 4 ...; k is the number of sine-cosine transformer sensors 1) sine-cosine transformer sensor 1 during the second half period of the signal voltage that provides a threshold elements 6 and 7 are configured in pairs on the positive and negative threshold voltage, the element 4I-8 and unit 9 starting and stopping integrators and thereby eliminates error from quadrature component and higher harmonics that are multiples of two. The necessity of introduction of the first 11 and second 12 inverters due to the fact that the processing of the voltages at the outputs even sine-cosine transformer sensors 1 (i.e. in the second half-cycle of the signal voltage) to determine the true sign of the input signal voltage required to invert their phase. As a result of integrating the outputs of the third 13 and fourth 14 integrators received

where Um is the amplitude value of the output signal voltages;

αi is the angle of rotation is inuse-cosine transformer sensors 1.

In the same (second) half of the signal voltage outputs of the first 3 and second 4 integrators through other contacts of the first 15 and second 16 switches respectively control signal from the output element 17 (smpeg) are connected to the inputs of the functional Converter 5 the ratio of the voltage in the code that the control signal from the output element 4I-8 encoding produces stress and preparation of the respective integrators for the next cycle of integration.

Thus, the introduction into the inverter rotation angle of the shaft in the code of the first and second inverters, the third and fourth integrators, the first and second switches, the item does NOT count can improve its performance in two times in comparison with the device prototype.

The inverter rotation angle of the shaft in the code that contains the sine-cosine transformer sensors whose outputs are connected to inputs of the switch, the first and second outputs are connected respectively to the inputs of the first and second integrators directly and through the threshold elements to the inputs of the element 4I, the output of which is connected to the input of the block start and stop integrators, the output of which is connected to the control inputs of the first and second integrators, functional Converter the ratio of the voltage in the code,the outputs of which are output characterized in that it introduced the first and second inverters, the third and fourth integrators, the first and second switches, and the item is NOT a counter, an input connected with the control input of the functional Converter the ratio of the voltage in the code and is connected to the output element 4I, and outputs connected to the control inputs switch inputs of the first and second inverters are connected respectively to the first and second outputs of the switch, and outputs connected respectively to the inputs of the third and fourth integrators, control inputs are combined, connected to control inputs of the first and second switches and is connected to the output element is NOT, whose input is connected to the output of the block start and stop integrators, the first inputs of the first and second switches connected respectively to the outputs of the first and second integrators, the second inputs connected respectively to the outputs of the third and fourth integrators, and outputs connected to the inputs of the functional Converter relations voltage in the code.



 

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