SU1061168A1 - Shaft rotation angle/time interval converter - Google Patents

Abstract

ANGLE CONVERTER THAT TEMPLE SHAFT IN TIME INTERVAL, containing consecutively connected sine-cosine angle sensor, two-channel filter, phaeo shift of unit, two-channel amplifier, outputs of which are connected to the first and second comparators, a frequency divider, a time-coded unit, t-ti ti ti t are connected to the first and second comparators, a frequency divider, a time-coded amplifier, t-shirts, and a treadmill, the outputs are connected to the first and second comparators, a frequency divider, a time-coded unit, and t-ti ti outputs are connected to the first and second comparators, a frequency divider, a time-coded unit, t-ti ti ti are connected to the first and second comparators, a frequency divider, a time coding unit, and t-ti ti ti are connected to the first and second comparators, a frequency divider, a time-coded amplifier, t-shirts, and a treadmill output, connected to the first and second comparators, a frequency divider, a time-coded unit, and t-ti ti ti And with the aim of increasing the reliability of the converter, the first and second elements I and the third comparator are introduced into it, the inputs of which are connected to the input of the sine-cosine angle sensor and the output to the divider part you forward and inverony divider outputs ca simplicity subkey us to the control inputs of the first and second AND gates, respectively, signal inputs kotog ryh connected to outputs Q of the first and second comparators, respectively, 8 and vosody connected to the temporary encoding unit. a 00

Description

The invention relates to automation and computing and can be used in automatic control systems as part of an angle-to-angle converter or as a stand-alone converter. A converter of shaft rotation angle into a time interval is known, consisting of a sine-cosine angle sensor (SKDU), a phase-shifting unit, a sum-steering device and a subtraction unit, two null organs and -tree ;; ger The disadvantage of the known converter is the ambiguity of the time interval corner within the full rotation of the rotor. ACS, which requires the inclusion in the converter of a special logical block of formation of the old time series, which is responsible for eliminating the unique significance of the transformation within the shaft rotation. This complicates the angle-code converter, in which the specified converter is used. Closest to the invention is a shaft rotation angle converter in a time interval containing a serially connected sine-cosine angle sensor, a two-channel filter, a phase-shifting unit, a two-channel amplifier, the rises of which are connected to the first and second comparators, a Frequency divider, a time coded unit Yarogo the frequency divider, the outputs of the first and second comparators through one and another frequency divider, respectively, are connected to the time code block 2. However, the possibility of measuring the same angle value equally reduces the reliability of this transducer. The purpose of the invention is to increase the reliability of the converter. The goal is achieved by the fact that in the converter of the angle of rotation of the shaft in the time interval containing a series of connected sine-cosine angle sensor, two-channel filter, phase shifting unit, two-channel amplifier, the outputs of which are connected to the first and second comparator, frequency divider, time code. block, the first and second elements are entered. And the third ksmparatorg inputs are connected to the input of a sine-cosine angle sensor, and the output is connected to a frequency divider, direct and inverse outputs of a frequency divider We are connected to the control unit K1:; um inputs of the first and second elements And, respectively, the signal inputs of which are connected to the outputs of the first and second comparators. Respectively, and the signals are connected to the temporary coding of which block. The drawing shows a structural diagram of the angle-to-time converter. The circuit includes a sine-cosine angle sensor 1, a two-channel filter 2, a phase shifter block 1, a two-channel amplifier 4, the first 5 and second 6 comparators, the first 7 and second 8 elements And, a temporary encoding unit 9, the third ks 10 tarator, divisor 11 frequencies. The Converter operates as follows. The input of the excitation winding. CDU 1 and the comparator 10 receives a sinusoidal signal of alternating current U, -Uj slncjt,. where CO is the circular frequency of the power supply, eg, SCCHU 1. Comparator 10 generates short pulses at the moments of zero crossing with a positive gradient of the signal U. The output signals of the SKDU 1 through a two-channel filter 2 are fed to the inputs of block 3, which is a double RC network and produces signals and and Uj in accordance with the equalities U2 (wl + j +) i. (), Where x is the angle of rotation of the rotor of the CCTSU 1 , The signals through a two-channel amplifier 4 are fed to the inputs of comparators 5 and b, which form short pulses at the moments of zero crossing with a positive gradient of the input signal. The spools from the output of the comparator 10 are fed to; the input of the divider 11, having a division factor equal to 2. As the divider 11, the switch can be used, for example, a trigger with a counting input. The output voltages of the divider 11 have the form of voltage drops, which coincide in time with the output pulses of the comparator 10I-. Have a following period, equal to 2T (where T is the period of the excitation voltage of the SKDU 1), and the duty cycle is 2. Output voltages of the divider 11 are always out of phase with each other. The inverse output of the divider 11 is connected to the control input of the element 7, and the direct output to the control input of the element 8. As a result, the output pulses of the comparators 5 and 6 are routed to the inputs of the coding block

3, 10611684

9 always in different periods of the exciter-rotor, the SKDU does not depend on the state

nor SCRL 1. separator 11 at the moment of switching on the preCoding block 9 of the installer. As a result, an increase in the state of the pulses results in the reliability of the operation of the transducer element 7 and returns to zero sweating.

and shylca. from element 8. At the same time, the economic effect of using the time interval of navigation of the proposed converter

the output of block 9 varies within the limits of its 7stechnical |) M advantage 0-2 T depending on the angle of rotation.

Claims (1)

TRANSFER OF ANGLE OF TURN OF THE SHAFT IN THE TEMPORARY INTERVAL, containing the channel filter connected in series, faeoshift »·! - 3 5 ft ί- e 7 * _n k) g 1061166