RU2310984C1 - Transformer of shaft rotation angle to code - Google Patents

Transformer of shaft rotation angle to code Download PDF

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RU2310984C1
RU2310984C1 RU2006104340/09A RU2006104340A RU2310984C1 RU 2310984 C1 RU2310984 C1 RU 2310984C1 RU 2006104340/09 A RU2006104340/09 A RU 2006104340/09A RU 2006104340 A RU2006104340 A RU 2006104340A RU 2310984 C1 RU2310984 C1 RU 2310984C1
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output
input
inputs
trigger
code
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RU2006104340/09A
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Russian (ru)
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Дмитрий Алексеевич Чернышев (RU)
Дмитрий Алексеевич Чернышев
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Открытое акционерное общество "Раменское приборостроительное конструкторское бюро"
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Abstract

FIELD: computer engineering, in particular, devices for transforming shaft rotation angle to code, possible use in data processing systems.
SUBSTANCE: transformer of shaft rotation angle to code contains sine-cosine transformer sensors, commutator, integrators, threshold elements, 4AND-NOT element, functional transformer of ratio of voltages to code, counter, trigger, generator of integration time and generator of original state signal, where generator of integration time contains generator of impulses, counter-distributor, trigger and NOT element.
EFFECT: increased speed of transformer operation.
2 cl, 3 dwg

Description

The invention relates to the field of computer technology, in particular to converters of the angle of rotation of the shaft into code, and can be used in data processing systems.
A known converter of the angle of rotation of the shaft into a code containing a sine-cosine transformer sensor, an octant selector, summing scale amplifiers, linear multipliers, a summing block, scale devices, a comparator, a register and a control unit (see AS USSR No. 416717, Cl G08C 9/00, 1974).
The disadvantage of the converter is its complexity, low accuracy and low speed.
Closest to the invention in terms of technical nature and the achieved result is a shaft angle converter into a code adopted as a prototype and containing (see AS USSR No. 481929, CL G08C 9/04, 1975) sine-cosine transformer sensors the outputs of which are connected to the inputs of the switch, the outputs of which are connected to the inputs of the integrators directly and through threshold elements tuned in pairs to positive and negative threshold voltages, connected to the inputs of the 4I-NOT element, the output of which is connected to the input of the unit and start and stop integrators, the output of which is connected to the control input of the functional converter of the voltage-to-code ratio and to the control inputs of integrators, the outputs of which are connected to the inputs of the functional converter of the voltage-to-code code, the outputs of which are the outputs of the converter.
A disadvantage of the known converter is its low speed, due to the fact that the conversion (integration, coding and preparation (zeroing) of integrators for the next integration cycle) of each of the input parameters takes time equal to the period of the input signal voltages.
The purpose of the invention is to increase the speed of the Converter.
This goal is achieved by the fact that in the converter of the angle of rotation of the shaft into a code containing sine-cosine transformer sensors, the outputs of which are connected to the inputs of the switch, the outputs of which are connected to the inputs of integrators directly and through threshold elements configured in pairs for positive and negative threshold voltages, are connected to the inputs of the 4I-NOT element, the outputs of the integrators are connected to the inputs of the functional converter of the voltage-to-code ratio, the outputs of which are the outputs of the the caller, a counter, a trigger, an integration time shaper and an initial condition signal shaper whose output is connected to the first inputs of the counter, a trigger and an integration time shaper, the second input of which is connected to the output of the 4I-NOT element, and the output is connected to the first control inputs of the integrators, to the control input of the functional converter of the voltage-to-code ratio and to the second inputs of the trigger and counter, the output of which is connected to the control input of the switch, the control output of the of the voltage transformer into the code is connected to the third input of the trigger, the output of which is connected to the second control inputs of the integrators, and the integration time generator includes a pulse generator, counter-distributor, trigger and the element NOT, the input of which is the first input of the integration time generator, and the output is connected to the first input of the counter-distributor, the second input of which is connected to the output of the pulse generator, the first input of the trigger is the second input of the shaper time no integration, the second and third inputs of the trigger are connected respectively to the first and second outputs of the counter-distributor, and the output is the output of the shaper of integration time.
The block diagram of the converter of the angle of rotation of the shaft into the code is shown in Fig. 1, the structural diagram of the converter of the time of integration of the generator is shown in Fig. 2, the timing diagrams of the converter of the angle of rotation of the shaft into the code are shown in Fig. 3.
The converter of the angle of rotation of the shaft into a code contains sine-cosine transformer sensors 1, switch 2, integrators 3, functional converter 4 of the voltage-to-code ratio, threshold elements 5 and 6, element 4I-NOT 7, shaper 8 of integration time, counter 9, trigger 10 and a driver 11 of the initial state signal, the driver 8 of the integration time contains an element HE 12, a pulse generator 13, a counter-distributor 14, and a trigger 15.
The outputs of the sine-cosine transformer sensors 1 are connected to the inputs of the switch 2, the outputs of the switch 2 are connected to the inputs of the integrators 3 directly and through pairwise connected threshold elements 5 and 6, tuned in pairs for positive and negative threshold voltages, connected to the inputs of the element 4I-NOT 7 , the output of element 4I-NOT 7 is connected to the input of the shaper 8 of the integration time, the output of the shaper 11 of the initial state signal is connected to the first inputs of the shaper 8 of the integration time, counter 9 and three Hera 10, the output of the shaper 8 of the integration time is connected to the first control inputs of the integrators 3, with the control input of the functional converter of the voltage-to-code ratio and to the second inputs of the counter 9 and trigger 10, the output of the counter 9 is connected to the control input of the switch 2, the control output of the functional converter 4 the voltage relations in the code are connected to the third input of the trigger 10, the output of the trigger 10 is connected to the second control inputs of the integrators 3, the outputs of the integrators 3 are connected to the inputs of the functional voltage converter to code 4, the outputs of the functional converter 4 voltage to code are the outputs of the converter, and the integration time generator 8 contains an element HE 12, a pulse generator 13, a counter-distributor 14 and a trigger 15, the input of the element HE 12 is the input of the generator 8 integration time, the output of the element 12 is connected to the first input of the counter-distributor 14, the output of the pulse generator 13 is connected to the second input of the counter-distributor 14, the first input of the trigger 15 is with the second input of the shaper 8 of the integration time, the second and third inputs of the trigger 15 are connected respectively to the first and second outputs of the counter-distributor 14, the output of the counter-distributor 14 is the output of the shaper 8 of the integration time.
The Converter angle of rotation of the shaft in the code works as follows.
When you turn on the power of the shaft rotation angle converter, the initial condition signal generator 11 generates a single pulse, according to which the counter 9 is reset, and the trigger 10 and trigger 15 (integration time former 8) are set to the initial state “01”.
When the shaft of the sine-cosine transformer sensors 1 is rotated by a certain angle αi, the voltage from their output windings, proportional to sin αi and cos αi, through the switch 2, according to the address selected by the counter 9, corresponding to a certain input parameter, are connected sequentially in time to the inputs of integrators 3 directly and through threshold elements 5 and 6, tuned in pairs to positive and negative threshold voltages, to the inputs of element 4I-NOT 7, which is at the transition points of the signal voltages, p proportional sin αi and cos αi, through zones from + U pores. until-U time. and from-U time. up to + U then. accordingly, it generates and generates an impulse corresponding to the level of "log.0" (see Fig. 3) to the shaper 8 of the integration time.
And in the first and second half-periods of the signal voltage pulses from the output of the element 4I-NOT 7, the shaper 8 of the integration time generates a start and stop signal for integrators 3 (see Fig. 3), and the integration time (t int = t 2 -t 1 ) is chosen in such a way that the midpoint of the signal voltages is exposed to integration, which eliminates the error from the quadrature component and higher harmonics that are multiples of two.
In the first half-cycle of signal voltages, integrators 3 integrate the input voltages coming from the outputs of the odd (k = n + 1, where n = 0.2.4 ...; k is the number of sine-cosine transformer sensors 1) of the sine-cosine transformer sensors 1 during the integration time t int = t 2 -t 1 . As a result of integration at the outputs of integrators 3 we get
Figure 00000002
where Um is the amplitude value of the output signal voltages;
αi is the angle of rotation of the sine-cosine transformer sensors 1.
In the second half-cycle of signal voltages, the integrators 3 integrate the input voltages coming from the even outputs (k = n, where: n = 0,2,4 ...; k is the number of sine-cosine transformer sensors 1) of the sine-cosine transformer sensors 1 also during the integration time t int. = t 2 -t 1 . As a result of integration at the outputs of integrators 3 we get:
Figure 00000003
where: Um is the amplitude value of the output signal voltages;
αi is the angle of rotation of the sine-cosine transformer sensors 1.
In both the first and second half-periods, the voltages proportional to sin αi and cos αi from the outputs of the integrators 3 are connected to the inputs of the functional converter 5 of the voltage ratio to the code, which encodes them on the trailing edge of the signal from the output of the shaper 8 of the integration time.
At the end of the coding of voltages proportional to sin αi and cos αi, the voltage-to-code ratio functional converter 5 generates a “coding end” signal, at the leading edge of which trigger 10 is set to the state corresponding to the “log.1” level, and along the leading edge of the signal with the output of the shaper 8 of the integration time, the trigger 10 is set to the initial state corresponding to the level of "log.0", thus, the output signal of the trigger 10 is a signal for the preparation (zeroing) of the integrators 3 for the next cycle in egrirovaniya input voltages.
Shaper 8 integration time works as follows.
When the pulse integration time (from the output of element 4I-NOT 7) corresponding to the level of "log.0" arrives at the input of the shaper 8, the latter, through the element 12, enters the account resolution input of the counter-distributor 14, the counting input of which receives the frequency from the output generator 13 pulses. The counter-distributor counts the pulses and generates single pulses t 1 and t 2 at its first and second outputs, according to the first of which the trigger 15 is set to the state corresponding to the level "log.1", and to the second - it is set to the initial state corresponding to the level "log.0", thus, the output signal of the trigger 15 is the output signal of the shaper 8 of the integration time and therefore the start and stop signal of the integrators 3.
Thus, the introduction of a shaft rotation angle into the counter code, a trigger, an integration time shaper, and an initial condition signal conditioner allows the input parameters to be processed in a time equal to half the signal voltage period, and thereby increase the speed of the shaft rotation angle converter into a code of two times compared to a similar prototype device.

Claims (2)

1. The converter of the angle of rotation of the shaft into a code containing sine-cosine transformer sensors, the outputs of which are connected to the inputs of the switch, the outputs of which are connected to the inputs of integrators directly and through threshold elements tuned in pairs to positive and negative threshold voltages, connected to the inputs of element 4I- NOT, the outputs of the integrators are connected to the inputs of the functional converter of the voltage-to-code ratio, the outputs of which are the outputs of the converter, characterized in that in it a counter, a trigger, an integration time driver and an initial condition signal driver are output, the output of which is connected to the first inputs of a counter, a trigger and an integration time driver, the second input of which is connected to the output of the 4I-NOT element, and the output is connected to the first control inputs of the integrators, the control input of the functional converter of the voltage to code ratio and to the second inputs of the trigger and counter, the output of which is connected to the control input of the switch, the control output of the functional The voltage-to-code ratio converter is connected to the third input of the trigger, the output of which is connected to the second control inputs of the integrators.
2. The converter of the angle of rotation of the shaft into the code according to claim 1, characterized in that the integration time generator comprises a pulse generator, a distribution meter, a trigger and a NOT element, the input of which is the first input of the integration time generator, and the output is connected to the first input of the counter -distributor, the second input of which is connected to the output of the pulse generator, the first input of the trigger is the second input of the shaper of integration time, the second and third inputs of the trigger are connected respectively to the first and second mu outputs of the counter-distributor, and the output is the output of the shaper of the integration time.
RU2006104340/09A 2006-02-15 2006-02-15 Transformer of shaft rotation angle to code RU2310984C1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2714591C1 (en) * 2019-06-10 2020-02-18 Акционерное общество Московский научно-производственный комплекс "Авионика" имени О.В. Успенского (АО МНПК "Авионика") Hybrid method of measuring angular position

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2714591C1 (en) * 2019-06-10 2020-02-18 Акционерное общество Московский научно-производственный комплекс "Авионика" имени О.В. Успенского (АО МНПК "Авионика") Hybrid method of measuring angular position

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