SU1020937A1 - Digital phase shifting device - Google Patents

Abstract

DIGITAL PHASE SHIFT DEVICE, with: a counter, a digital comparator, one of which is connected to the output of the counter, and the other input is an input of the digital setting of the control angle, a clock generator, the output of which is connected to the counter input of the counter, an output pulse generator. The owl, the output of which is the output of the device, and the null organ, the input of which is the syncronization input of the device, is characterized in that, in order to increase the reliability of operation, a trigger is inserted in it, the first input, which is connected to the output of the null organ, and the output is with the installation input of the meter, and the element OR-NOT, one input of which is connected to the output of the digital comparator. the torus, the other input - with the output of the generator of clock pulses, and the output is connected to the input of the imaging unit of the output pulses and the second input: a trigger.

Description

The invention relates to a converter technique, namely, devices designed to control the angle of regulation of high-power valve converters. A digital photoelectric shifting device is known, which contains a digital comparator, one input of which is connected to the output of the counter, and the other input is connected to the digital angle setting bus, controlling the generator, phase detector, zero-edge, trigger and output pulse generator owl 1. . . However, this device has a reduced reliability due to the possibility of multiple triggers if during the adjustment interval the angle setting undergoes several sudden changes. and also because of the possibility of false triggers during transients in the counter. . . -. . . ; ... The closest in technical essence to the present invention is a digital phase shifting device, comprising a counter, a digital comparator one input of which is bitwise connected to the output of the counter, and; Another input is intended for digital setting of the angle of adjustment, z. the clock pulse clock, the output of which is connected to the counting input of the counter, is the output pulse generator, the output of which is the output of the device, and the zero-body, the input of which is the sync input. device 23. This device, for the reasons stated above, is also not sufficiently reliable. The purpose of the invention is to increase the reliability of the digital photoelectric shift of the device. . : Set goal Achieved by the fact that a digital phase is equipped with a device that contains a counter, a digital controller, one input of which is connected to the output of the counter, and the other input is an input of the digital control angle, a pulse generator, and the output of the camera is connected to a counting input the counter output pulse generator, the output of which is connected to the output bus of the device, and the null organ, whose input is the synchronization input of the device, is equipped with a trigger and an OR-NOT element, the first trigger input with The output is a null-organ, and the output is from the installation input of the counter, one input of the ILY-NE element is connected to the digital comparator output, the other input is connected to the output of the clock generator, and the output is connected to the input of the output pulse former and the second input Hera. FIG. 1 shows a block diagram of the device in FIG. 2 - time diagrams illustrating his work. The device contains a counter 1, a generator of 2 clock pulses, a null-organ 3, a trigger 4, a digital comparator 5, a driver of the output pulses b, and an OR-NOT element 7. The device operates as follows. A synchronization voltage is applied to the input of the null organ 3 (Fig. 2oi). With the passage of a voltage of zero at the beginning of the adjustment interval, a pulse is formed at the output of the null organ (Fig. 26). The generator 2 creates at the counting input of the counter 1 clock pulses (Fig. 2). At the beginning of the adjustment interval, the zero-pulse impulse resets trigger 4 (Fig. 2E), as a result of which a state corresponding to the resolution of the counting occurs at the installation input of the counter. The counter reads clock pulses as long as the number of pulses; received at his counting input from the beginning of the adjustment interval, will not reach the number on the bus of the setting of the angle of adjustment. When the number of leading edges of voltage pulses at the counting input of the counter reaches a value equal to the number on the control angle bus, the condition that the digital comparator prevails on the first 5 digital comparator and the number at the second input will stop running, which will lead to the disappearance of the logical unit at the input of the element OR-NOT 7 (Fig.2e) However, when ets l pulse tta input shaper 6 (Fig. And the second input of the trigger 4 is not instant, but only after the duration of the clock pulse. Transition in the counter for this the time will end, with the result that the triggering of the pulse exhauncher becomes possible only when the number of clock pulses received from the beginning of the control interval to the counter input really reaches the reference value. After the duration, the clock pulse with the number equal to the number on the reference bus angle of regulation, on douh inputs of an e-mate OR-7 7 voltage will arise; a logical yul that will cause the appearance of a logical unit at its output. c (the trigger will trigger the driver b and the output of the device will go on, and the trigger 4 will be set to the HCXQitHoe state, which will lead to a further counting of the counts 1 and 8, until the next pulse

: c zero-organ output 3. If, after resetting the counter 1, the setting of the regulation angle: a change several times abruptly before the start of the ifoBoro adjustment interval, this will lead to the appearance of a pulse at the output of the device. ..

Thus, the use of the invention will allow to increase the reliability of the 1 Sch4 | Level devices of the pulse-phase EY control.

1020937

The positive effect of using the device in addition to enhancing the reliability of the device is also in the fact that when building precision systems for pulse-phase control, it will significantly improve the accuracy by increasing the frequency of the clock generator, increasing the bit width and n {1 change and ( pfalllel transfer.

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Claims (1)

A DIGITAL PHASE-MOVING DEVICE containing a counter, a digital comparator, one input of which is connected to the counter output, and the other input is a digital input of the control angle, a clock pulse generator whose output is connected to the counter input of the counter, output pulse shaper, the output of which is the device output, and a null-organ, the input of which is the synchronization input of the device, moreover, in order to increase the reliability of operation, a trigger is introduced into it, the first input; one of which is connected with the output of the zero-organ, and the output with the installation input of the counter, and the OR-HE element, one input of which is connected to the output of the Digital Comparator, the other input is connected to the output of the clock generator, and the output is connected by the output of the output pulse shaper and the second trigger input. Fi ?. 1 1 1020937