SU1501271A1 - Displacement-to-a.c. signal phase converter - Google Patents

Abstract

The invention relates to automation and computing and can be used to connect analog information sources with a digital computing device. In order to increase accuracy by reducing the discreteness of converting to a displacement transducer containing a multi-phase displacement sensor 1, a pulse generator 2, a frequency divider 3, the first driver 4 phase-modulated signals, filter 6, are introduced from the second to K-th phase generator 5 phase-modulated signals. Shaper 4 (5) of phase-modulated signals contains phase splitter 7 and multiplexers 8 and 9. Multiphase sensor 1 produces a four-phase system of sinusoidal voltages, of which phase splitter 7 _of generator 4 produces N ₁ -phase voltage system. The control inputs of the multiplexers 8 and 9 of the former 4 receive the code of the higher bits N _{1 of the} divider 3. Stepwise sinusoidal signals are formed at the outputs of the multiplexers 8 and 9. At the same time, the output voltage of the multiplexer 9 is out of phase at an angle of 360 ° / N ₁ compared to the output voltage of the multiplexer 8. The output voltages of multiplexers 8 and 9 of the former 4 are fed to the inputs of the phase splitter 7 of the corresponding former 5, which produces / N ₂ = 2 ^N2 / -phase voltage system within 360 ° / N ₁ . These voltages with the help of group N _{2 of the} divider 3 are alternately connected by multiplexers 8 and 9 to the outputs of the former 5. The following drivers 5 operate similarly to the previous ones. The output sinusoidal voltage of the latter (K-th) shaper 5 with a resolution of 360 ° amplitude / N ₁ N ₂ .... N _{K is} fed to the input of filter 6, which selects the first harmonic. 1 hp ff, 1 ill.

Description

one

(21) 4249660 / 24-24

(22) 05.26.87

(46) 08/15/89. Bul No. 30

(71) Moscow Institute of Radio Engineering, Electronics and Automation

(72) M.A. Gabidulin, I.A. Pogosn, A.S. Daniel, S.S. Karapet, I.D. Leybovich and V.V. Komarov

(53) 681.325 (088.8)

(56) USSR author's certificate

No. 1374428, cl. H 03 M 1/44, 1986.

Zverev A.E. and others. Converters of angular displacements in a digital code. L .: Energie, 1974, p. 74, fig. 25

(54) ACCUMULATOR TRANSMITTER INTO THE ALARM CURRENT SIGNAL PHASE (57) The invention relates to automation and computer technology and can be used to connect analog information sources with a digital computing device. In order to improve accuracy by reducing. discreteness into a displacement transducer containing a multiphase displacement transducer 1, a generator of 2 pulses, a divider 3 frequencies, the first driver 4 phase-modulated signals, a filter 6, entered from the second

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go no Ki i f (1рми1 ии, -г1Ч; 1И S f humodulirovannykh; m1gi l MI III. 1 (pmirov; pche 4 (5) phase modulironiiiiiiijix of signals contains fachoraslepitno p 7, I p piplsxory 8 and Ch. Myofacial sensor 1 is fourfold (}} active sinusoidal system based on phase spreader / forger 4, developed N –f / dznuyu system voltage -. To the control inputs of the plexoropes 8 and 9 forger 4 is received, you will receive a 4-hour system. p, divider 3. Stepwise sinusoidal signals are formed at the outputs of multiplexers 8 and 9. At the same time, the output voltage of the pulses and eXor 9 is phase shifted by yioji 360 / N compared to the output voltage of the mulylex

Noobre-1-ness (1 relates to automation and computing and can be used to connect analog information sources with a digital computing device.

The purpose of the invention is to improve the accuracy of the converter by reducing the resolution of the conversion.

The drawing shows a block diagram of the converter.

The converter contains a multiphase displacement sensor 1, a generator of 2 pulses, a divider 3 frequencies, a Bbtti driver 4 phase-modulated signals, from the second to the k-th driver 5 phase-modulated signals, a filter 6. The drivers 4 and 5 phase-modulated signals contain a phase splitter 7, multiplexers 8 and 9.

The Converter operates as follows.

A multiphase sensor 1 generates a four-phase sinusoidal voltage system, which is shifted relative to each other by 90 °. These voltages, which unambiguously determine the values of the if phase within 36U, are fed to the input breakers 7 of the spinner 7 at the outputs of the splitter 7. At the outputs of the slot 7, a voltage system is generated (N,, type B and 9 alternately with a period of changing the low bit of the code arriving at their control, inputs from the outputs of the group n

RL 1-1. The 1 -.,. E voltage of the multiplexers I and 9 of the former 4 receive the inputs of the phase splitter 7 corresponding to the former of the former 5, which produces an N - 2 phase voltage system within the range of 3 (i (),;) With the help of the group of bits of the divider E, they are alternately connected by multiplexers 8 and 9 to the outputs of the former 5. The following JFI 5 formers operate in a similar manner to the simulated output. The output sinusoidal voltage of the last (K-th) driver 5 with a discreteness of the amplitude change, N,. . .N, is fed to the input of filter 6, which selects the first harmonic, 1 hp f-ly, 1 ill.

the bits of the divider 3, connect the input voltage to the outputs of the driver 4. In this case, the output voltage of the multiplexer 9 is out of phase by 360 / N, compared with the output voltage of the multiplexer B.

The output voltages of the multiplexers 8 and 9 of the demolver 4 are fed to the inputs of the phase splitter 7 of the first of the formers 5, which produces a (N, 2) -phase voltage system within the range. These voltages are connected alternately with multiplexers 8 and 9 to the codes of the first shaper 5 of phase-modulated signals by means of a group of pins of the divider 3. The output signals of the former of the imaging unit 5 are offset relative to each other by. The next shaper 5 operates similarly to the previous shaper 4 and 5 phase-modulated signals, but in a smaller range, and produces a (Nj - 2) -phase voltage system, which is alternately connected to the outputs of multiplexers 8 using 1 group of 9, etc. In the last driver of the 5 phase-modulated signals, only one multiplexer is used, the output of which produces a stepped sinusoidal aln signal. Quantum of the phase change of the output of the last driver

5150

5 co 1tietstpuet ih (, N, .. N. I5i, i2 K

xci; uHie to the right R & D of the subsequent phot11MN 1O- shaft 5 is fed to filter 6, which n n: j start 1 rp with: iusoi, signal 1-Fioro signal highlights the first harmonic, the phase shift of KoTopoii with respect to Bbrx (JAHOMy signal of the older The bit of the splitter of 3 frequencies is proportional to the size of the measured displacement of the MOBILE part of the phase sensor 1. The bits of the splitter of 3 frequencies should be at the same time.

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 Formula inventions {and

Claims (2)

one . 1constitute; The ac phase signal contains a multiphase displacement sensor, a pulse generator whose outputs are connected to the inputs of a frequency divider, the outputs of a multiphase displacement sensor and one group of outputs of the higher bits of the frequency divider are connected respectively to the information and control inputs of the first driver of phase-modulated A filter whose output is a converter output, characterized in that, in order to improve the accuracy of the converter, it is entered from the second to the k-th form and the first phase-modulated sig 1alov, and outputs the bit frequency divider are combined in k-rpyini, data inputs of the second shaper fazomodup five 0 five 0 five The connected signal 1 loop 1 is connected to the V.surfers of the Hyperpo forms of the 1Flator (modulated) 1.1X () n, the output of the phase modulated signal generator with the filter input, the control inputs of each subsequent forms of the 1FM of the phase-modulated signals odk. It is assigned to the corresponding group of outputs of the frequency splitter bits, and the information inputs of each sequential generator of ()) (modulated P1 signals are connected to outputs 11 previous about the phase controller, and the first signals. 2. The converter according to claim 1, which means that the driver of the phase-modulated signals contains a phase splitter and two 1 × multiplexers, the inputs of the phase splitter and the equalizing input 1.1 of the first multiplexer are respectively information and y (parallel inputs of the phase shifter modulated signals, the outputs of the Plexor multiples are outputs of the phase modulated former (1B, pern, and the second inputs of the phase split; 1I are connected to one information (M (inputs of corresponding, respectively) about the first and second multi - nj eKCopoB, ostapny The information inputs of which are connected to the outputs of the phase splitter, and the control inputs of the second cartoon 1 and EX ra are connected to the corresponding control inputs of the first MyjibTH J eKcopa.