SU1211860A1 - Pulse shaper - Google Patents

Abstract

The invention relates to a pulse technique and can be used in automatic process control devices. The purpose of the invention is to expand the functionality. The device contains a block 1 signal source, triggers 2,3,4,5,14,15, elements AND 6,8,17,18,20 and 22 elements OR 7,11,19 and 24, block 9 setting the pulse duration, a relay 10 times, BP, 1 run buses 12 and 13, switch 16, pulse counter 21, block 23 for specifying the pulse period and generator 25 clock pulses. Introduction of an OR 24 device, AND 17,18,20 and 22 elements, a pulse counter 21, and a 25 clock pulse generator made it possible to generate output control pulses, both when working with discrete and analogue regulators. 1 il. I (L

Description

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The invention relates to a pulse technique and can be used in devices for automatic control of technological processes.

The purpose of the invention is the expansion of functional capabilities by providing the ability to control both discrete and analog controllers.

The drawing shows the electrical structure of the device.

The pulse shaper contains a signal source block 1, the first output of which is connected to the zero input of the first 2ns trigger with single inputs of the second and third triggers 3 and 4, the second output of the signal source block 1 is connected to the zero input of the second trigger 3 and with single inputs of the first and fourth triggers 2 and 5, the direct output of the fourth trigger 5 and the inverse output of the first trigger 2 are connected respectively to the first and second inputs of the first element AND 6, the output of which is connected to the first input of the first element OR 7, are inverse the output of the second trigger 3 and the direct output of the third trigger 4 are connected respectively to the first and second inputs of the second element AND 8, the output of the pulse duration setting unit 9 is connected to the trigger input of the time relay 10, the second input of which is connected to the output of the second element OR 11, the first and The second inputs of which are connected respectively to the first and second output buses 12 and 13 and to the direct outputs of the fifth and sixth triggers 14 and 15, respectively, the zero inputs of which are connected respectively to the first and second time relay outputs 10, n The switch 16 is the first and second outputs of which are connected to the first inputs of the third and fourth elements 17 and 18, respectively, the second inputs of which are connected to the output of the third element OR 19, the first input of which is connected to the zero input of the first trigger 2, the second to the single input of the fourth trigger 5, the zero input of which is connected to the single input of the fifth trigger 14 and with the output of the fifth element AND 20, the first input of which is connected to the second input of the first element 6 AND, the second with the output of the first element OR 7, with

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With the help of a steady-state system with chstchikl / 1 pulses and with perngm) zhol (local E. Gement I 22, the output of the pit of the village of Oslo is dinene with zero input of the third

5 and with a single input of the sixth trigger 4 and 15, the second input is with the first input of the second element AND 8, the output of which is connected to the second input of the first element OR 7, the third input

o which is connected to the output of pulse counter 21, the information input of which is connected to the output of the pulse period setting unit 23, the counting input to the output of the fourth orbital element OR 24, the first input of which is connected to the output of the fourth element And 18, the second input to the output of the generator 25 clock pulse whose input is connected

20 with the release of the third element And 17.

As a signal source unit 1, multipoint bridges and potentiometers can be used, for example, KSM-4, KSP-4, etc., as a time relay 10 - electric or electronic devices, for example, type VS-10, with By this, the signal at the first input controls the time delay value, and the signal at the second input is the trigger signal. Block 23 may be implemented as a set of switches, for example, as program switches. The pulse shaper operates

,,- in the following way.

In the initial position in the counter 21, using the block 23, the numerical value and 1 pulses are set to which the time

, Q is the frequency of the cycle t, since the period of issuing the control pulse when the pulse shaper is operating in the case of a discrete input signal is equal to -F.

In the case when the input of the pulse generator is supplied from block 1 with a continuous signal, time code K is set at information input of counter 21 using block 23. The magnitude of the control pulse period in this case is equal to K, where Tp is the pulse repetition period of the generator reference frequency 25. At the relay output 10 s

block 9 is used to set the duration of the t-control pulse (the durations on each output bus can vary). At the exits

Triggers 2 and 3, there is a logical set, and the trigger numbers of triggers 4-5 are a logical unit.

When the pulse shaper is operated with a discrete input-i signal coming from the first output of block 1, the switch 16 is set to allow the pulses from the first output of block 1 to pass through the elements 1.18 and 27 to the counting input of the counter 21, and with an analog signal - from the second output of block 1 through the elements 19 and 17 to the input of the generator 25.

The discrete signal from the first output of block 1 is fed to the zero input of flip-flop 2 and to the single inputs of flip-flops 3 and 4. The fla outputs of flip-flops 4 and 3 are set to a logical unit and logical zero, respectively, and the output of flip-flop 2 is a logical one, which is simultaneously input to element 20 and the second input element 6, the first input of which from the output of the trigger 5 is supplied with a logical unit, resulting in the output of element 6 appears logical unit, which through element 7 is fed to the inputs of elements 20 and 22 and the input The result of the counter 21 is as a result of which the counter 21 returns to its initial state (one impulse was recorded in the counter 21, which was fed to its counting input through elements 24, 18 and 19 from the output of block 1).

Due to the fact that the logical unit enters the first input of element 20 from the output of trigger 2, a logical page appears at the output of element 20, which is fed to the single input of trigger 14 at the output of trigger 14 and a logical unit appears on bus 12 , through which element 11 starts the relay 10, to the input of which, previously with the help of block 9, the duration T of the controlled output pulse is set. After the time has elapsed, the relay 10 activates a signal with which the trigger 14 returns to the zero state.

When a second pulse appears at the first output of block 1, it arrives at the zero input of flip-flop 2 and at the single inputs of flip-flops 3 and 4, and also through element 19 is fed to the inputs of elements 18, and at the output

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an element 24 appears pulse, which is fed to the counting input of the counter 21. At the output of the element 17, the pulse does not appear, therefore the generator 5 does not turn on and does not produce reference pulses with a period Td, As a result, the output of the counter 21 the signal does not appear until the number of pulses, tO stepped on its counting input, is equal to the one specified by block 23.

At the output of element 6, the logical unit does not appear due to the absence of the output of the trigger 5 of the logical unit. This trigger, after the formation of the first control pulse, is brought to the zero state and remains in this state until 20 minutes before the signal at the second output of block 1 appears. If, a two-step regulation law is obtained. When four pulses are applied to the pulse counter input,

25 then, at its output, a signal appears, which through the element OR 16 is fed to the inputs of the elements AND 17 and 18

If the numeric value coming from block 23, we get

30 two-way regulation law. If F 1, then the return of the counter 21 to the initial state is made only after the arrival of the corresponding number of input pulses from the first input of the block 1, which corresponds to the multiposition law of regulation.

The operation of the pulse former at the analog input signal from .- differs from that considered by the fact that the input signal from the second output of block 1 passes to the input of the generator 25, which is produced by reference pulses.

Synthes with a period T. In this case, control output pulses arrive at bus 13 (with the appropriate participation of elements 8, 3, 22 and 15).

Thus, this pulse shaper generates output control pulses, both when working with discrete and analog controllers.

Claims (1)

Invention Formula A pulse shaper containing a block specifying a period of i-pulses, a signal source block, the first output of which is connected to the zero input of the first and single inputs of the second and third triggers, the second output to the zero input of the second and single inputs of the first and fourth triggers, direct the output of the fourth trigger and the inverse output of the first trigger are connected respectively to the first and second inputs of the first element AND, the output of which is connected to the first input of the first element OR, the inverse output of the second trigger and straight The third output of the third trigger is connected respectively to the first and second inputs of the second element. And, the output of the pulse duration setting unit is connected to the first input of a time relay, the second input of which is connected to the output of the second OR element, the first and second inputs of which are connected respectively to the first and second output buses and to the direct outputs of the fifth and sixth triggers respectively , the zero inputs of which are connected respectively with the first and second outputs of the time relay, and the third OR element, characterized in that, in order to extend the functionality by providing control as discrete, and analog regulators incorporated into it a fourth element or third, fourth, and sixth n tsh element and a pulse counter, geneRedaktor A, A Ramenka Compiled by A. Sokolov Tehread 3. PaliKorrektor S. 1 ekmar Order 650/60 Circulation 818  State Committee of the USSR according to the inventions and discoveries of 11i035, Oskva, Zh-35, 4/5 Raushsk nab. Fi, 1P1A11 PIP Patent, Uzhgorod, st. Design, And a clock pulse and a switch, the first and second outputs of which are connected to the first inputs of the third and fourth And elements, respectively, the second inputs of which are connected to the output of the third OR element, the first input of which is connected to the zero input of the first trigger, the second to the single input the fourth trigger, the zero input of which is connected to the single input of the fifth trigger and the output of the fifth element AND, the first input of which is connected to the second input of the first element AND, the second - to the output of the first element OR, from the input m installation pulse counters with the first input of the sixth element And, the output of which is connected to the zero input of the third, and with a single input of the sixth trigger, the second input - with the first input of the second element And, the output of which is connected to the second input of the first element OR, the third input which is connected to the output of the pulse counter, the information input of which is connected to the output of the impulse period setting block, the counting input to the output of the fourth OR element, the first input of which is connected to the output of the fourth And element, the second input to Exit clock generator whose input is connected to Bk; third swing pementa I. Subscription