SU1233118A2 - Device for controlling oscillations - Google Patents

Abstract

The invention relates to a test apparatus for testing products for impulse loads. The purpose of the invention is the realization of the possibility of forming different polarity pulse alternations for exciting a vibrator. The device for controlling oscillations contains a periodic signal generator, an amplitude regulator, two key elements, a power amplifier, a vibrator, a vibrator, a matching amplifier, a peak value meter, a memory unit, a comparator unit, a square driver, two inverters, a pulse counter, three Differentiated blocks, two And elements, three triggers and a setpoint for the number of pulses. The introduction of the second inverter, the second key element, the second element I, and the third trigger into the main unit made it possible to expand the functional capabilities of the device, namely, this device has the ability to reproduce alternating bipolar pulses. 1 il. Additional to auth. St. № 1068905. § КЛ

Description

The isuretaly relates to a test technique designed for testing impulse loads and is an improvement of the FAMOUS auth device. № 1068905о

The purpose of the invention is the realization of the possibility of forming alternating pulses of opposite polarity to excite the vibrator.

The drawing shows a block diagram of the proposed device for controlling oscillations "

The device contains a series-connected oscillator 1 of periodic signals J amplitude regulator 2, the first key element 3, power amplifier 4, vibrator 5. vibrator 6, matching amplifier / s meter 8 peak 3 pump memory block 9 block 10

. Arrange the way.

atelier 11 right first inverter

First differential 25 counter 13 14, first elerigger 16, the first differentiating 9 number of pulses, the second block 20, the second element op 23, the second key

20 second key of which, about the invert of the master setting device 1 house

thirty

A generator is generated by a voltage of 2 amzlies of a key e 11 direct half hesol 1t transform pulses, After a different differential, one input is an impulse of which the impulse is 11 o At the same time, through ay impulses, the pulses correspond to pulses pic

The output of the generator 1 of periodic signals through the regulator 2 amplitude is connected to the input of the first key element. The output of the power output terminal connected to the input 4 through the second inverter 23 connected in parallel and the second key element 24 “The output power input 4 is connected to the coil of the moving part (not indicated) of the vibrator 5” The vibration transducer 6 is installed on the test object (not shown) output and connected via serially connected matching amplifier 7 and peak meter 8 to the input of memory block 9, the output of which is connected to one input of comparison 10 block 5 output connected: c. the control input of the amplitude controller 2, the output of the latter is also connected to the input of the shaper 11 of the rectangular signals by the output connected to the combined inputs of the first inverter 12 ,, counter 13 and the first differentiating unit 14 "

counter 13

The input of the counter 13 is connected to the output of the second trigger 16, the direct input of which is connected to one output of the first element 15 and the other input

counter 13 is connected to the output of the first differentiating unit 14. The output of element 15 is connected to the input of the first trigger 17, the direct output of which is connected to one input of the second element 22 and to the control input of the first key element 3 and the control input of memory 9 directly, and through the third differential, 11; jrztosh, its block 20 - with the input

set to zero the trigger 16 and the counting input of the third trigger 21, the forward output of which is connected to another input of the element AND 22j output connected to the control input

the second key element 24, the output of which, combined With the output of the second inverter 23, is connected to the input of the unit 19 of the number of pulses, the output connected to the input of the Stop

The device is a way.

counter 13

works as follows

counter 13

The generator 1 of periodic signals inducts a sinusoidal voltage at the output, which through the regulator 2 enters into the inputs of the key element 3 and the former 11 rectangular signals. The positive half-waves of the signal by the Shaper 1t are converted into square impulses. After differentiating by the first differentiating unit 14, short pulses are supplied to one input of the And 15 element, the temporal position of which corresponds to the leading fronts of the pulses after the former 11 and BTOPOSJ differential - Circulation block 18 to the input of the trigger 17; act: positive short pulses, the temporal position of which corresponds to the falling edges of the pulses after the driver 11,

The signal from the output of the latter is also fed to the input of the counter 13, operating in the divider mode, which determines the pause between the output pulses. The pulse from the output of the counter 13 sets the second trigger 16 to one.

Therefore, the next impulse from the output of the first, zifferen) 1-acting block 14, after passing through the AND 15 element

3 1

This sets the first trigger 17 to the unit. In this case, the first key element 3 is opened, and when the trigger 21 is set to one state, the impulse from the output of the third differentiation unit 20 produces a single signal from the output of the second element And 22 to the control input of the second key element 24, open it. The signal from the output of the periodic signal generator 1 is supplied through the amplitude regulator 2 and the serially connected perzya and second key elements 3 and 24, respectively, and the power amplifier 4 to the vibrator moving coil 5. At the same time, the signal from the output of the first trigger 17 is fed to the memory block 9 and prepares it to the measurement of the output signal of the vibrator 5

The output signal from the vibrator 6, installed on the platform of the vibrator 5, through the matching amplifier 7 and the peak meter 8 is fed to the input of the memory block 9, which captures the maximum signal value that is compared to the reference signal in the comparison block 10 and supplied to the control input of the amplitude regulator 2, adjusting the amplitude of the pulses to the required level

At the moment of termination of the pulse from the output of the driver And to the fault input of the first trigger 17 from the output of the second differentiating unit 18, a pulse arrives, setting the first trigger to the initial state (to zero), while the key element 3, the memory block 9 is disconnected and through the third differential block 20, the second trigger 16 and the third trigger 21 are set to zero.

The next signal from the output of the amplitude regulator 2 after an interval of time equal to the pause between pulses, determined by the state of the counter 13, is fed to the input of the amplifier 4 power through the third key element

W 10 5 20

25 Q

five

0

1,184

3 and the inverter 23., since the key element 24 is closed due to the absence of a signal at its control input (flip-flop 21 is at zero) and the signal at the output of the second element And 22 is missing.

Thus, in accordance with., The state of flip-flop 21 (one or zero), the signal from the output of the key element 3 is fed to the input of ushshtel

4 power respectively through the key element 24 or inverter 23,

In this case, pulsed signals alternating polarities are fed to the input of the moving coil of the vibrator 5.

Unit 19 of the number of pulses counts the number of pulses reproduced by the vibrator 5, and when it reaches the required number of them, it stops the counter 13.

Compared to limestone, the proposed device has the ability to reproduce alternating bipolar pulses, which expands its functionality.

Claims (1)

Invention Formula A device for adjusting oscillations on the author. W 1068905, about t - l and ch and e with the fact that in order to form alternating-t polar signals, it additionally introduced in series the third trigger, the second element And the second key element, as well as the second an inverter connected between the output of the first key element and the input of the power amplifier, the second input of the second key element is connected to the output of the first key element, and the output of the second key element is connected to the input of the pulse number sensor, the second input of the second element I is connected to the output of the first trigger, the input of the third trigger is connected to the output of the third differentiating unit, Edited by N. Bobkova Compiled by M.Levin. Tehred V. Proofreader G. Reshetnik 2769/49 Circulation 836 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035s Moscow,, Raushsk nab., D. 4/5 11production and printing company, Uzhgorod, st. Project, 4