SU935819A1

SU935819A1 - Phase-shifting device

Info

Publication number: SU935819A1
Application number: SU802995520A
Authority: SU
Inventors: Борис Кириллович Куприк; Анатолий Иванович Двойниченко; Владимир Николаевич Козявкин
Original assignee: Предприятие П/Я А-7332
Priority date: 1980-08-22
Filing date: 1980-08-22
Publication date: 1982-06-15

Description

Изобретение относитс к фазосдвигающим устройствам, в которых изменение фазового сдвига и частоты сигналов зависит от внешних управл ющих сигналов, и, в частности , может быть использовано при проверке измерителей моментов.The invention relates to phase shifters, in which the change in phase shift and frequency of signals depends on external control signals, and, in particular, can be used when checking torque meters.

Известен фазовращатель, содержащий управл емлй генератор с устройствами частотной и фазовой подстройки частоты,выход которого подключен к двум идентичным пересчетным блоком, а также блок записи кода , две группы вентилей, блок аналоговой пам ти и фильтр нижних частот A phase shifter is known that contains a control oscillator with frequency and phase control devices, the output of which is connected to two identical scalers, as well as a code writing unit, two groups of gates, an analog memory block and a low-pass filter

Это устройство обладает сложной схемой и формирует сигналы со сдвигом фазы от О до 360° .This device has a complex circuit and generates signals with a phase shift from 0 to 360 °.

Наиболее близким к предлагаемому вл етс устройство, содержащее блок задержки, выходной триггер и элемент совпадени .Closest to the present invention is a device comprising a delay unit, an output trigger, and a matching element.

Изменение фазового сдвига возможно в.интервале от 0° до ЗбО. Известное устройство не обеспечивает непрерывного изменени фазы в диапазоне ()-( + 180°).The change in phase shift is possible in the interval from 0 ° to ZbO. The known device does not provide continuous change of phase in the range () - (+ 180 °).

Цель изобретени - расширение функциональных возможностей.The purpose of the invention is to expand the functionality.

Указанна цель достигаетс тем, что в фазосдвигающее устройство, содержащее два триггера, блок задержки , выход которого соединен со вторым входом второго триггера, и первый элемент совпадени , введены два сумматора, два дополнительных блока задержки, второй элемент совпгщени , два формировател и источник посто10 нного напр жени , выход которого соединен со вторым входом первого дополнительного блока задержки и первыми входами сумматоров одновременно , а вторые входы последних в15 л ютс входами устроййтва, причем выход первого сумматора подсоединен к первым входам всех блоков задержки , а выход второго сумматора ко вторым входам блока задержки и This goal is achieved in that a phase delay device containing two triggers, a delay unit whose output is connected to the second input of the second trigger, and the first coincidence element, are two adders, two additional delay units, the second matching element, two formers, and a constant source voltage, the output of which is connected to the second input of the first additional delay unit and the first inputs of the adders at the same time, and the second inputs of the last are 15 inputs of the device, and the output of the first sums ator connected to the first inputs of all delay blocks, and the output of the second adder to the second inputs of the delay block and

Claims

20 of the second additional delay unit, with This the output of the second additional delay unit is connected to the first input of the second trigger. the output of which through the second rover is connected to the second output of the device, and the output of the additional delay unit is connected simultaneously to its control input and the first inputs of the coincidence elements, the second, whose inputs are connected to the outputs of the first trigger, the first output of which is connected to the first output of the device in addition, the outputs of the first and second coincidence elements are connected to the control inputs of the delay unit and the second additional delay unit, respectively. The delay unit consists of an integrator whose input is the first input of the block, and the output is connected to the first input of the comparator, the second input of which is the second input of the block, and the output of the comparator is connected to the output of the block through the integrator control input I am the control input of the delay unit. Figure 1 shows the structural scheme of the device; FIG. 2 shows the structure of the delay block; Fig. Zagpory signals at the outputs of the nodes of the device. The phase shifting device contains the first and second adders 1 and. 2, constant voltage source 3, first and second additional delay blocks 4 and 5, delay block 6, first trigger 7, first and second elements 8 and 9 — coincidence, first driver 10, second trigger 11 and second driver 12. Blocks 4, 5, and 6 delays contain integrator .13, comparator shaper 15. The device works as follows. Phase torque measurement sensors produce two signals, SmE1E, Smgmg) (i is the circular frequency of the sensor supply voltage; the circular frequency of rotation of the sensor rotors; 4 (t) is the phase angle proportional to the torque. Phase-shifting device must produce signals , similar signals (1). To the first input of the device (I), the voltage is applied, which sets the value I, and to the second input (I, 2) sets a further value of H. The voltage at the inputs of the device can be described .G-5OL-- 01 .g - rotor speed sensor ; mas1: 1-factor coefficient, f phase shift angle; S - scale factor, Source 3 produces a constant voltage And, a signal at the output of the first adder 1 is described by the expression -1-- .. - coefficients pegda K. and the second inputs, respectively. The voltage U is applied to the Bx.1 of the block 4 delay and / is integrated by the integrator 13 of this node. The signal at its output is n-4- i% -4 o, -at, where & is the integration time measured from moment of reset. The voltage rises until the polarity of the demand at the output of the comparator 14 of block 4 changes. When the voltage at the output of the comparator 14 changes, the driver 15 triggers, producing a short pulse (DB, FIG. 3). By this pulse, the integrator 13 of block 4 is reset to zero (comparator 14 returns to the initial state), the state of the first trigger 7 changes. This process is repeated cyclically. The change in the state of the first trigger 7 occurs at the moments when the condition H-l. 4..d is fulfilled. - coefficients 4-. transmission comparator 14. block 4 on the first .or and .iy and second to the y inputs, respectively. and the condition l -A-g 14: 4d lii4iV | L 2K 2-i4-4-sUi d repetition of the signals of the first period 7 is equal to g1 frequency W), - (i.e., the circular frequency of the trigger 7 is circular signal frequency of the signal. The output of a sinusoidal waveform is obtained by using fi rts as drivers 10 and 12. In this case, at the first output of the device (Vyt.1), we have output1 Е sin (u4ft) t. (7) 8 and 9 of the coincidence, we obtain sequences of short pulses with the frequency of the following U) 7 and shifted among themselves by time 0.5 TT. The pulses Ug reset to zero the integrators 13 blocks 5 and b, respectively. The signal at the output of the second adder 2 is described by the expression .gCh-G-Vi 5aa ai from, (are the coefficients of the first and second inputs of the adder 2 and the second input, respectively. The integrators 13 of blocks 5 and 6 integrate the voltage U. Comparators 14 change the polarity of the output signal when the sign of the voltage difference and U changes. U. The shapers 15 produce short pulses at the time of positive (for the considered case of signal plots, fig. 2) voltage drops at the outputs of the Comparators 15. These pulses ( 1, Ug) change the state of the trigger 11, the signal of which After passing through the driver 12, it arrives at the device output 2. If the signal at the output 1 of the device is constant, then the frequency of the trigger signals 11 is equal to the frequency, and the signals are shifted in phase by a value proportional to the signal given by the direct input 2 of the device, this is the time & (, and the 0-appearances of the pulses and and Uj-, counted from the moment-reset of the integrator 13 of block 6, is determined by the expression, w "-". (9) The emuls and appears at time 0, 5 T, and ends at the time point T. Impulse U, appears at time 9, and ends at time (0.5-T + 0b) . At the same time, the repetition frequency of both signals is the same. The positive effect is in expanding the functionality with a simplified adjustment process, achieved due to the fact that the adjustment processes occur under the influence of analog voltages, with the frequency and phase of the signals and the range of the 180-O phase being separately regulated. -180 °. Claim 1. A phase shifting device comprising two flip-flops, a delay unit whose output is connected to a second EftJM input of the second flip-flop, and the first matching element, characterized in that, in order to expand its functionality, two adders, two additional delay blocks, the second element of the match, the two formers and the source of the constant voltage, the output of which is connected to the second input of the first additional block. delay and the first inputs of the adders at the same time, and the second input The first ones are the inputs of the device, the output of the first adder is connected to the first inputs of all delay blocks, and the output of the second adder is connected to the second inputs of the delay block and the second additional delay block, while the output of the second additional delay block is connected to the first input of the second trigger, the output of which The non-cutter driver is connected to the second output of the device, and the output of the additional delay unit is connected simultaneously with its control input and the first inputs of the matching elements, the second inputs of which x shlhodam connected to the first flip-flop, the first output is connected via a first driver with a first output of the apparatus, in addition outputs of the first and second elements are connected to the inputs of matching control delay block and a second additional delay block, respectively. 2. The device according to claim 1, wherein the delay block consists of an integrator, the input of which is the first input of the unit, and the output is connected to the first input of the comparator, the second input of which is input of the unit, and the comparator output is connected via a driver to the output of the block, and the integrator control input is the control input of the delay unit. Sources of information taken into account during the examination 1. USSR author's certificate 492825, cl. G 01 R 25/04, 1972.

2. Authors certificate of the USSR 373644, cl. G 01 R 25/04, 1971.