SU414615A1 - - Google Patents

Description

one

The invention relates to automation and computing and can be used to convert signals from a sine-cosine angle sensor to a digital code corresponding to the angular position of the monitored shaft.

Angle-to-code converters are known that contain a switch, a sine-cosine angle sensor, the outputs of which are connected to a phase-shifting CS circuit, and the input is connected to the excitation generator, the other outputs of which are connected to the input of the cycle sensor and the first valve. The output of this valve is connected to the input of the pulse counter, and the other input through the first input of the first trigger is connected to the outputs of the second and third valves, the first inputs of which are connected to the output of the allocation circuit zero. The second output of the first trigger is connected to the first input of the second trigger, to the second input of which the output of the cycle sensor is connected.

A disadvantage of the known transducers is the presence of two allocation schemes of zero, the non-identity of which creates one of the main features of the device.

The aim of the invention is to simplify the converter.

This is achieved by the fact that the control inputs of the switch are connected to the outputs of the second flip-flop and to the second inputs of the second and

the third valve. The inputs of the switch are connected to the output of the phase-shifting / C-chain, and the output is connected to the input of the allocation circuit pool.

FIG. 1 is given a functional diagram of the device; on the flg. 2 - time diagram of voltages.

Output of an excitation generator 1 solnep with an input of a sine-cosine angle sensor

2, which is, for example, a contactless spn of a blue-cosine transformer 3, the output windings of which are connected to a separate amplifier 4.

The outputs of the sensor. Angle 2 through the phase-shift / C-chain 5 are connected to the inputs of the switch 6, which is an analog switch 7, the output of which is connected to the repeater 8. The output of the switch 6 is connected to the input of the allocation circuit zero 9,

consisting of a null organ 10, the output of which is connected to a short pulse former driver 11. Other outputs of the excitation generator I are connected to the input of the sensor 12 and the first valve 13, the output of which is connected to the input of the pulse counter 14, and the other input through the first input the first trigger 15 is connected to the outputs of the second 16 n third 17 gates. The first inputs of the valves 16, 17 are connected to the output of the extraction circuit.

Yul, and the second with the outputs of the second trigger 18 and the control inputs of the switch 6. The second output of the trigger 15 is connected with the first input of the second trigger 18, the second input of which is connected to the output of the cycle sensor 2.

FIG. 2 denotes: Ur the voltage of the excitation generator 1, el - the cycle pulses; Eat, Eve are the output voltages from the phase-shifted / C-circuit 5, Vs are the pulses from the driver of short pulses 11; eu - control signals from trigger 18; / x - time interval.

From the outputs of the angle sensor 2, signals proportional to the sine and cosine of the angle of rotation a are fed to the C-chain 5. From the outputs of the last voltage VA and VC, the analog switch 7 is connected in series to the input of the repeater 8 and further to the input of the allocation circuit zero.

The former 11 emits pulses e "at times corresponding to the transitions of the voltages BA and VB through zero from the positive to the negative level.

At the beginning of the converter's operation, the cycle pulse wc from the cycle sensor trigger 18 is set to position 1 for the control signal yy which in this state connects the voltage e / to the input of the allocation circuit zero and simultaneously gives a permit to the valve 17. The first pulse e „, which came from the short pulse generator, passes through the valve 17 and sets the trigger 15 to the state“ 1.

At the output of the latter, a time interval / ,, - begins to form, which gives permission to the valve 13 to pass pulses of frequency / o to the pulse counter 14. Tipping over of the trigger 15 causes the trigger 18 to be switched to the initial state “O for the control signal eyi and

The position “1 for the equalizing signal”, which causes the disconnection of the voltage from the selection circuit and the connection of voltage to it. At the same time, the permission is removed from the third valve 17 and permission is given to the second valve 16. The second pulse e "passes through the second valve 16 and throws the trigger 15 into the initial state. The formation of the time interval ty ends and the BENTIL 13 closes.

On the pulse counter 14, a code is written corresponding to the input of the angle of rotation a.

Subject invention

Angle converter - code containing

a switch, a sine-cosine fragile sensor, the outputs of which are connected to the phase-shifting / C-center, and the input to the excitation generator, the other outputs of which are connected to the input of the cycle sensor and the first valve,

the output of which is connected to the input of the pulse counter, and another input through the first input of the first trigger is connected to the outputs of the second and third valves, the first inputs of which are connected to the output of the allocation circuit zero,

The second output of the nerve trigger is connected to the first input of the second trigger, to the second input of which a loop sensor output is connected, characterized in that, in order to simplify the driver, the control

the switch inputs are connected to the second trigger outputs and to the second inputs of the second and third valves; the switch inputs are connected to the outputs of the phase-shifted U C-chain, and the output is connected to the input of the circuit highlighted zero.

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