SU913429A1 - Accumulating shaft angular position-to-code converter - Google Patents

Description

The invention relates to automation and computing and improves the well-known transducer of movements in the number of pulse code.

Known transducer displacement in the number-pulse code, containing a source of alternating voltage connected to a sine-cosine angle sensor, the outputs of which through a scale unit connected to the sum difference unit, the outputs of which are connected to a block of drivers, one and other outputs of which are connected to corresponding switches, the switch outputs are connected to the logical unit of formation of incremental pulses [1].

A disadvantage of the known converter is the low stability of its readings with possible fluctuations of its input shaft.

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A converter is also known that contains a single-track code scale and two fixed sensing elements whose outputs are connected to the same inputs of the first And elements through differentiating elements, the outputs of which are connected to one input of other And elements, the other inputs of which directly or through inverters are connected to the outputs of sensitive elements, and the outputs through the corresponding elements OR are connected to the inputs of addition and subtraction of a reversible counter, the outputs of the first section of which are connected to the other inputs I will give the first elements And [2].

The disadvantage of this device is its complexity and the lack of stability of the output code for large amplitudes of oscillations of the code scale, fixed on the object of displacement.

913429

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The closest technical solution to the present invention is to accumulate the angle of rotation of the shaft into a code containing a sine-cosine angle sensor, the outputs of which are connected to the phasor's splitter, the outputs of the phase-splitter and the sinus-cosine angle sensor through the formers of a rectangular voltage connected to the logical unit of formation of pulses increments of displacement "(ST ·

A disadvantage of the known converter is the low stability of the output code of the auto-oscillations of the input shaft. '"

The aim of the invention is to improve the stability of the Converter with auto-oscillations of the input shaft.

The goal is achieved by the fact that the accumulator converters the angle of rotation of the shaft into a code containing a sine-cosine angle sensor, the outputs of which are connected to the phase splitter, the outputs of the phase splitter and the sine-cosine angle sensor through rectangular voltage drivers, connected to the logical unit of the incrementing movement, the exclusion blocks of self-oscillations pulses are introduced, each of which contains a trigger and two AND elements, the outputs of the logical block of the formation of incremental pulses displacements are connected to individual inputs of the pulse puncturing unit porvogo trigger oscillations and to respective one inputs of AND gates, the other inputs of which are connected to the outputs of the flip-flop, and the outputs of AND gates are connected to the inputs of a subsequent trigger pulse puncturing unit oscillations.

The drawing shows a structural diagram of the Converter.

The Converter contains a sine-sinus angle sensor 1, the outputs of which are connected to the phase splitter 2, the outputs of sensor 1 and phase splitter 2 through rectangular voltage drivers 3 - 6 are connected to the logic unit 7 for generating incremental displacement of the movement, the output of which is connected to series-connected blocks 8, each of which consists from trigger 9 and elements 10 and 11. The inputs of block 8 are connected to single trigger inputs

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9 and one of the inputs of the corresponding elements 10 and 11, the other inputs of the second ones are connected to the outputs of the trigger 9, and the outputs of the elements 10 and 11 are connected to the inputs of the block 8.

The converter works as follows.

in a way.

The output of sensor 1 generates a sine and cosine direct current signals as a function of the angle of rotation of the sensor. Additional sinus and cosine DC signals shifted by 45 ° relative to the sensor signals 1 are removed from the phase splitter 2 output. Formers 3-6 produce rectangular voltages from the sinusoidal signals, which enter the block 7. In block 7, pulses are generated that correspond to the output fronts signals shaper 3-6, and are distributed on one or another output depending on the direction of movement of the shaft of the sensor 1. Trigger 9 block 8

25 is triggered by the falling edges of the input pulses. If before entering the input pulse, trigger 9 was in the same state (1 or 0], then the input pulse through the corresponding open element I 10 or 11 passes to the output of block 8, and the state of trigger 9 does not change. If trigger 9 is in the opposite state then the corresponding element

35 And closed. The input pulse to the input of block 8 does not pass, and the back front of this pulse changes the state of the trigger 9. As a result, the first block 8 eliminates the instability of the converter during self-oscillations of the input shaft in the range of one sample. The other series-connected blocks 8 work in a similar way, which provides an increase in the stability of the converter with auto-oscillations of its input shaft in a given range.

Claims (1)

Claim An accumulator of the angle of rotation of the shaft into a code containing a sine-cosine angle sensor, the outputs of which are connected to the phase section ^{55 of the} pitel, the outputs of the phase splitter and the sine-cosine angle sensor through rectangular voltage drivers five 913429 6 to the unit for the formation of impulses of increment of displacement, about-and-f and th with the fact that, in order to increase the stability of the converter during self-oscillations of the input shaft, blocks of exclusion of impulses of self-oscillations, each of which contains a trigger and two the element And, the outputs of the logical unit of formation of the pulses of the increment of movement are connected to the single inputs of the trigger of the first block of the exclusion of the self-oscillation pulses and to one connected to the outputs of the trigger, and the outputs of the elements And connected to the inputs of the trigger of the subsequent block exclude self-oscillations.