SU604018A1 - Shaft angylar position-to-code converter - Google Patents

Description

(54)

Claims (2)

SHAFT ANGLE CONVERTER TO CODE The closest technical adaptation to the proposed invention is a shaft rotation angle converter into a code containing a pulse generator connected to a binary counter, the first group of outputs of which is connected to one input of the coincidence unit, the other input of which is connected. with a phase shifter, the input of the registering unit is combined with the first input of the phase splitter, the second input of which is connected to the output of the binary counter f2. The aim of the invention is to improve the conversion accuracy by eliminating inaccuracy from inaccurate installation and instability of the phase signal of the signals supplied to power the phase array and simplifying the design by eliminating the useful signal of unique high-precision phase-measuring units to control the accuracy of installing the signals received for powering fazovrasha tel. It is achieved by introducing a decoder, power amplifiers, null organs, triggers, peak detectors, a discrete amplifier and filter into the transducer of the angle of rotation of the shaft, through the corresponding power amplifiers connected to the phaser inputs and null organs, outputs which are connected to the first inputs of the triggers; the second inputs of which are connected to the output of the decoder: outputs of the triggers through the corresponding peak detectors are connected to the inputs of the differential amplifier. The filter is connected to the input of the registering unit, the second group of outputs of the binary counter is connected to the inputs of the decoder. FIG. 1. presents the conventional circuit of the described converter; Hf FIG. 2 - time diagrams that show his work. The transform contains generator 1 impuls, binary counter 2, phase split 3, recording bpoc 4, bpoc 5 from falling, power 6 and 7 of power, phase shifter 8, decoder 9, triggers 1O and 11, null-bodies 12 and 13, differential amplifiers 14 , peak detectors 15 and 16 and filter 17. In FIG. 2 of the following symbols, a, (f, are the signals at the outputs of the binary counter triggers; Z is the signal at the input of the phase-dissipator; 9, e, are the signals at the outputs of the phase spreader; K is the signal for the decoder output; E is the signal at the output of the first control trigger 10;;,, m-sngnaly at the output of the second toigger control 11: i n, p - signals at the outputs of the peak detectors 15, 16. The device works in the following manner. The signal from the output of the pulse generator 1 goes to the binary counter 2. Si1-cash of the last trigger trigger enters the phase splitter 3. Phasorasplit The spruce converts the counter signal to XiBe sinusoidal voltages shifted relative to each other by 9 A. The phase shifter 8 is powered by this voltage. The signals from counter 2 are fed to block 5 and the decoder 9. The decoder samples the trigger pulses of the counter (Fig. 201). the pulses are rigidly coupled to the output signal of the counter (Fig. 2g), followed by a period of -SIL. The sequence of pulses at the output of the decoder (Fig. 2 k) is shifted relative to the sequence of pulses at the output of the last T D H ™ -1. th trigger trigger on time -. In this way, an accurate delay and a binding of the pulse at the output of the decoder to the counter signals are created, and the period of the following pulses is created exactly equal to-g. The pulses from the outputs of the null organs 12 and 13 translate the triggers 10 and 11 from the initial state, and the pulses from the output of the decoder return the trigger to control the initial state. If the phase shift between lapar phase powering phasers is exactly 90, then the pulses at the control trigger outputs will have the same duration (Fig. 2, m). With a phase shift not equal to 9O, the pulses at the control trigger outputs will have different duration. Accordingly, unequal voltages will be at the outputs of the detectors 15 and 16. Differential amplifier 14 highlights the difference in voltages at the outputs of the peak detectors. This filter is filtered by filter 17 and fed to phase separator 3 and register block 4. Block 4 fixes the information in the split-phase setting. Thus, in the proposed converter, conversion errors due to an inaccurate setting of the phase shift of the signals supplied to the power source: and the fadershield are practically excluded; conversion, due to the 5th steam stability of wind EEC 4 - oras1.g.epite and amplifiers; thanks to the nipoBfiunoMy signal with high precision nenpepbUiomu signal, pS111orionpl1. The gestabilities of the phsal SLV1TGL output signals of the phase shifters are practically excluded during automatic adjustment. Significantly simplifies the design of the converter by excluding from the scheme of formation of the useful signal the high-precision phase-measuring units needed to control the accuracy of setting the reference voltages of the phase shifter. Formula of an Shadow Shield A shaft rotation angle converter into a code containing a pulse generator connected to a binary counter, the first group of outputs of which is connected to one of the inputs of the coincidence unit, the other input of which is connected to the phase shifter, the input of the recording unit is combined with the first input of the phase splitter The second input of which is connected to the output of a binary counter, characterized in that, in order to increase the accuracy of the converter, a decoder, amplifiers of amplifiers are introduced into it. 1 NOSTA, null orgashl, triggers, peak detectors diskret1gy amplifier and filter fazorasschepitel through sootvetstvuk Chiyah power amplifiers are connected to the inputs of the phase shifter and the zero-bodies, whose outputs are connected to first inputs trig geroVr second inputs are connected to the output of the decoder, flip-flops outputs through the corresponding peak detectors connected to the inputs of the differential amplifier, the output of which is connected through a filter to the input of the recording unit, the second group of outputs of the binary counter is connected to the input E decoder. Sources of information taken into account in the examination: 1. Bychatin D. A. and others. Rotary inductosynt, M., Energie, 1969, p. 70 2.Prasnukhin L.I. Photoelectrically, to transform information, M., Mashinospoenie, 1974, p. 229. ppppppppp ppp about. sh P