SU1534433A2 - Device for regulation of oscillations - Google Patents

Abstract

This invention relates to a testing technique. The purpose of the invention is to expand the field of application of the device by reproducing sequences of bursts of pulsed signals with a constant amplitude of signals in a batch and with a linearly varying amplitude in the batch sequence. For this, the device for controlling the oscillations contains a series-connected periodic signal generator 1, amplitude regulator 2, key 3, power amplifier 4, vibrator 5, vibrator 6, matching amplifier 7, peak value meter 8, memory block 9, comparison unit 10, as well as a shaper 11 rectangular pulses, an inverter 12, a pulse counter 13, a differentiating unit 14, an AND element 15, triggers 16, 17, a differentiating unit 18, a pulse number setting unit 19, a differentiating unit 20, switches 21, 22, a key 23, a trigger 24, roar A cross counter 25, a maximum code setting device 26, a block 27 comparing a digital-to-analog converter 28, an And element 29, a delay element 30. Achieving the goal provides the introduction of keys 31 and 32, trigger 33, pulse counter 34, maximum code setting unit 35, comparison unit 36, OR elements 37, 38, delay element 39. 1 il.

Description

The invention relates to a testing technique, is intended for testing products for impulse loads, and is an improvement of the device according to the authors. St. No. 1429093.

The purpose of the invention is to expand the field of application by allowing the reproduction of sequences of packets of pulsed signals with a constant amplitude in the packet and with a linearly varying amplitude in the sequence of packets.

The drawing shows a block diagram of the device.

The device for controlling oscillations contains a series-connected periodic signal generator 1, an amplitude regulator 2, a first switch 3, a power amplifier 4, a vibrator 5, a vibrator 6, a matching amplifier 7, a peak value meter 8, a memory block 9 and the first block 10 comparison, as well as the shaper 11 rectangular pulses, the inverter 12, the first pulse counter 13, the first differentiating unit 14, the first element 15, the first and second triggers 16 and 17, the second differentiating unit 18, the unit number of pulses 19, the third trim the walking unit 20, the first and second commutators 21 and 22, the second key 23, the trigger 24, the reversing counter 25, the first unit 26 of the maximum code, the second unit 27 of the comparison, the digital-analogue converter 28, the AND element 29, the first delay element 30, the third and fourth keys 31 and 32, the fourth trigger 33, the second pulse counter 34, the second maximum code setting unit 35, the third comparison unit 36, the OR elements 37 and 36, the second delay element 39, the Start 40 input.

The device works as follows.

When a signal arrives. Starting to input 40, the trigger 33 is set to one. In this case, the key 31 closes. The generator 1 generates at its output a periodic signal, in particular, sinusoidal oscillations, which through regulator 2 are fed to the input of the key 3.

In the initial state, the trigger 17 is set to the zero state, the key 3 is open and the pulse signals do not arrive at the vibrator 5. At the output

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shaper 11 is formed by rectangular pulses, which are differentiated by block 14. Simultaneously inverted by block 12, pulses are differentiated by block 18 and arrive at the input of the zero state setting of trigger 17, confirming its zero state. The pulses from the output of the imaging unit 11 are fed to the input of the counter 13, which forms a pause between the pulsed signals generated by the vibrator 5.

When a pulse appears at the output of the counter 13, the trigger 16 is set to one. Therefore, when a positive polarity pulse appears at the output of the block 14 at the output of the element I 1, a pulse appears that sets the trigger 17 into one state. In this case, block 9 is prepared for operation, key 3 is closed and transmits pulses of generator 1 to amplifier 4 and further to vibrator 5. output signal of vibration transducers 6 through matching amplifier 7 and meter 8 is fed to input of block 9, which stores the max value signal. This value of the signal at the moment of pause is compared with the value specified in block 10, and their duration is fed to the control input of the controller 2, adjusting the amplitude of the pulses to a predetermined value.

In the program change mode, the amplitude of the linearly discretely increasing to the maximum value and then linearly discretely decreasing from the maximum value of the dependence on the input of the switch 21 receives a signal from the output of the digital-to-analogue converter 28.

During the formation of pulses fed to the vibrator 5, the trigger 16 is set to one, the key 23 is closed and the pulse corresponding in time to the leading edge of the working pulse of the vibrator 5 is fed through the closed key 31 to the input of the switch 22 and then to the summing input of the counter 25 , increasing its content by one unit low. The same pulse, delayed by element 30, is fed to the input of block 27, and from the output of key 31, to the input of setting the zero state of trigger 33. At the same time, key 31 is opened and key 32 is closed. From the exit key

31 impulse through the element OR 38 enters the counting input of the counter 34, increasing its content by a unit of the least significant bit. The pulse delayed by element 39 enters the input of block 36 and when the codes of the counter 34 are equal and the sensor 35 arrives at the input of setting the zero state of counter 34 and through the OR 37 element at the input of setting a single state of the trigger 33. At the same time, the key 31 closes again, and the key 32 opens,

If the codes on the inputs of the block 36 are not equal, the trigger 33 remains in the zero state, therefore the key 31 is open and the key 32 is closed. The next pulses go through the key 32 and the element OR 38 to the input of the counter 34 and through the element 39 to the input of the block 36 until the contents of the counter 34 are equal to the contents of the setting device 35. In this case, the key 31 again closes and the pulse from the output key 23 is fed to the input of the switch 22 and the element 30

Thus, the counter 34 counts the number of pulses of a pack with a constant amplitude. The number of bursts of pulses is determined by the content of the setting device 35.

When the contents of the counter 25 and the setting device 26 are equal, a pulse from the output of the element 30 enters the setting of the zero state of the trigger 24. In this case, the signal from the output of the switch 22 goes to its output connected to the subtracting input of the counter 25. With the zero state of the counter 25 The output of the element 29 is a signal that sets the trigger 24 to one state, and the switch 22 to a state in which the pulse signal from its input goes to its output connected to the summing input of the counter 25.

At the moment of termination of the working impulse, a pulse arrives at the input of setting the zero state of the trigger 17c of the output of the block 18 and sets the trigger 17 to the zero state. In this case, the key 3 is opened and the trigger 16 is set to the zero state by a pulse from the output of the unit 20. The sensor 19 is made in the form of a counter,

which counts the number of pulses and, when the set value is reached, stops the counter 13.

Thus, the device generates sequences of bundles of pulses with a constant amplitude and a linearly variable amplitude in the sequence of packs,

Claims (1)

Claims. five A device for controlling oscillations by aut. St. No. 1429093, which is designed so that, in order to expand the field of application by providing the possibility of reproducing sequences of packets of pulsed signals with a constant amplitude in a pack and with a linearly variable amplitude sequences of packs, the third and fourth keys are entered into it, the fourth trigger, the second pulse counter, the third block 5 comparison, the second setting unit of the maximum code, two OR elements and the second delay element, the second key output connected to the inputs of the second switch and the first delay element via a third key, the control input of which is connected to the forward output of the fourth trigger connected to the installation unit state to the output of the first element OR, the input of the zero-state setting to the first input of the second element OR and the output of the third key, and the inverse output to the control input of the fourth key, the information the input of which is connected to the output of the second key, and the output to the second input of the second OR element connected by the output to the counting input of the second pulse counter and the input of the second delay element connected by the output to the clock input of the third comparator unit, in which the first discharge inputs are connected to the corresponding the outputs of the second pulse counter, the second bit inputs are connected to the corresponding outputs of the second unit master maximum code, and the output is connected to the reset input of the second pulse counter and the first input IDN th first member connected to the second input of slime Start. five 0 five 0 five