SU601731A1 - Angular displacement -to-code converter - Google Patents

Description

3

 The functional electrical circuit of the device contains an IAA & R object 1 and a mechanically associated phase shifter 2, a driver of the reference voltage 3 of the power supply of the phase rotation, and a generator of clock pulses 4, a driver of building pulses 5, a counter of the exact count 6, the register of the exact count 7, block matching 8, coarse counter 9, coarse reg register 10, display unit. AND.

The device requires two clock sequences of impulses TI1 and TI2, generated by a tact pulse generator 4 and shifted relative to each other by a half period, Tact sequence TI 1 is fed to an exact counter 6, at the output of which we get half a pulse.

hi t and.,

COfiipn N

where K is the capacity of the accountOOP. t ... r pr - RK-t ГС Г5 r: 4ftrt chick .. Phaser 2 is powered by voltage, and Of, from voltage driver 3, having a frequency &.-; F, due to voltage U, the output of the phase generator is e-1 - with the position of its rotor. When the sinusoidal loading of the pi-yror U. is transferred, a short pulse is generated in the positive direction in shaper 5 through O, which is synchronized with TI2 clock from the clock pulse generator 4, strobe frequency (Lc; s at the output of the strobe pulse generator 5 f f

FW

where; 1f is the rotor speed of the phase shifter r / s.

The work of the accurate reading channel is happening next. The counter of the exact count 6 is filled with the clock itself TI1. The pulse from the output of the imaging unit transfers to the precision reference register 7 the number recorded in counter 6, which forms the exact counting code. If the rotor of the Phaser 2 is motionless, then the value of the code of the exact count does not hesitate. When the rotor moves to the right or left, gating impulses on the output of the imaging unit 5 iiaMHTiaioT shift to the right or left in the reference pulse interval. At the same time, the time interval between the gating pulses and the change e-gs

 . . according to the expression;

si f-t-f

 on fB

For the formation of coarse-pulse pulses, a matching block 8 is applied, which generates a coarse-pulse as a result of counting the number of gating pulses j..j.j over the reference voltage interval. T o,

A sign of a change in fao on 36O (pha turn) is the situation that in the next phase of the façade through 360 ° of the reference pulses qkspo of the pulses fcj for the period T. is not equal to Ij but equal to 2 direction of the floor) or O (when the phase shifter is against the floor).

In the matching block, the count of the number of gating pulses in the reference voltage interval was used, Esshi in the matching block for the period Td, the number 2 was counted, then by the end of the period

an impulse appears in the nerve of its exit. A unit is added to the coarse counter 9 If a number O is calculated in the matching block. During the period TQ, the pulse appears at

his second exit. A unit is subtracted from the coarse counters,

And one of the input of the matching unit 8 psutup impulses from the output of the counter of the exact count 6 with a constant period

The top / and to the other input of the 3-gate strokes from the exit of the imaging unit 5, the building pulses, and the interval between the gating pulses depends on the speed and direction of the rotor movement.

Phase Phaser 2. Since-.р and j, y, are synchronized to shift in time by clock pulses) asam TI1 and TI2, then a match (,. | is excluded, which results in high accuracy of the device.

The logical function of the communication unit in the proposed device is, therefore, the counting. Of pulses fq in the interval Ton Comparing this number with 1,

This device provides an accurate change in mixing at high speeds of the measured object, when the rotation speed of the rotor of the phase reflector is commensurate with the REF frequency f on

used in all modern software control systems using phase shifters as reamer sensors. This is its technical and economic effect.

Claims (2)

Invention Formula An angular displacement GT converter containing a phase shifter connected to the object, the output of which is connected to one of the inputs of the gating pulse former, the output of which is connected to one of the inputs of the exact reference register, the matching unit and the coarser register, the first output of the clock generator is connected with the input of the counter of exact counting, one of whose vyhots is connected to the input of the phase shifter through the driver of the reference voltage, the outputs of the matching unit are connected to one of the inputs The coarse counting chip, the other outputs of the counters of the exact and coarse counting through the respective registers are connected to the inputs of the indication block, characterized in that, in order to improve the accuracy of the converter, the output of the counting counter of the exact countdown is connected to another input of the matching unit, and the paraphase output The clock pulse generator is connected to the second input of the gating pulse shaper. Sources of information taken into account in the examination: 1. US patent number 3357012, cl. 340-347, 1967. 2.Artamonov A.I. Push-pull angle sensor - code, Instruments and control systems, 1975, No. 4, 17; 4, and et.t  SiftfHa-1 bnonal GO  Put.3