SU1705806A2 - Oscillations regulator - Google Patents

Abstract

The invention relates to a test technique, intended to test products for impulse loads. The purpose of the invention is to enhance the functionality by allowing the reproduction of a pulse sequence of alternating polarity with a linearly increasing (decreasing) amplitude of one polarity and a linearly decreasing (increasing) amplitude of the other polarity. To do this, the device includes a switch 31, a digital-to-analog converter 32, a trigger 33, keys 34, 35, 36, element AND 37, element OR 38, delay elements 39, 40, 41 and inverter 42. 2 Il,

Description

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The invention relates to a test technique, intended to test products for impulse loads.

The purpose of the invention is to expand the functionality by providing the ability to reproduce pulse sequences of alternating polarity with a linear increasing (decreasing) amplitude of one polarity and a linearly decreasing (increasing) amplitude of the other polarity.

Figure 1 shows the block diagram of the device; figure 2 - timing diagrams illustrating his work.

The device for controlling the oscillations comprises a series-connected periodic signal generator 1, an amplitude regulator 2, a key 3, as well as a power amplifier 4, a vibrator 5, a vibration converter 6 serially connected, a matching amplifier 7, a peak value meter 8, a memory block 9, a block 10 comparison, as well as shaper 11 rectangular signals, inverter 12. pulse counter 13, differentiating unit 14, element 15, triggers 16.17, differentiating unit 18, sensor number 19 pulses, differentiating unit 20, switching Ai 21, 22, key 23, trigger 24. reversible counter 25, for maximum code sensor 26, comparison block 27, digital-to-analog converter 28, element 29, delay element 30, switch 31, digital-analog converter 32, trigger 33, keys 34, 35 and 36. element AND 37, element OR 38, delay elements 39.40. 41, inverter 42. control input 43 Operation mode.

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A single trigger input 33 is connected to an external preset input.

The device for controlling oscillations operates as follows.

The generator 1 generates at its output a periodic signal, in particular, a sinusoidal voltage, which through the regulator 2 amplitude enters the input of the key 3,

In the initial state, the trigger 17 is in the zero state, the key circuit 3 is open and the pulse signals do not enter the winding along the moving vibrator coil 5.

At the output of the former 11, rectangular pulses are formed, which are differentiated by the unit 14.

Simultaneously, the pulses inverted by Block 12 are differentiated by block 18 and arrive at the zero input of trigger 17, confirming its zero state. Sigma. from the output of the imaging unit 11 is fed to WUED counter 13, forming a pause MeNvvy generated by the vibrator 5 pulse signals.

When a signal appears at the output of the counter 13, the trigger 16 is set to one. Therefore, when a positive impulse appears at the output of block 14 at the input of element I 15, an IU-pulsed sp of Nlp appears, which by setting trigger 17 to unity -. snowing In this case, the key 3 will close i simultaneously the signal from the output of g chip er:;::; 1, rhoda to the input of block 9 memory m. Dgot ... and its. The signal from the output of the general opci 1 comes through the follower. Sr., - :, t-other closed keys 3, 34 and si / gol ;. Zchalnosti in the winding mov / pl yaii. . vibrator b.

Output-ic: i sawdust., Zibro-converter 6 through coz 1a l .; the amplifier 7 and the 3 pi meter: -. cm of values is fed to the input of the Oloka c i i ich which fixes the Maximale ..- sign :: w signal.

In rzzhi, about: a) the amplitudes of the pulses generated by the vibrator 5, and; / 1 in one unit of comparison 10 through a switch 21 g odstc 1 voltage from the output, the source of the reference voltage (not shown). Zofi chiroanny in block 9 of memory, the maximum value of the signal at the moment of pause is compared with the reference in block 10 of the comparison and is fed to the control input of the regulator 2 amplitude, adjusting the amplitude of the amplitude to the value of the reference voltage

In the program mode, the amplitude values of the pulse sequence of alternating opposite-polarity pulses with amplitudes varying

According to the law of linearly discretely increasing (decreasing) to the maximum (minimum) value of the dependence of one polarity and linearly discretely decreasing (increasing) to the minimum (maximum) value of the dependence of opposite polarity, the input potential of element 37 comes to a single potential. On the counting input of the trigger 33 are received

pulses from the outputs of the switch 22. The first pulse, which arrives at the counting input of the trigger 33, sets this trigger to the zero state, thereby opening the keys 34, 35.36. At the same time

the signal from the output of the key 3 is fed to the input of the amplifier 4 power through the inverter 42, and the pulse signal from the output of the switch is not fed to one of the inputs of the counter 25. Thus, the contents of the counter 25 pulses are changed by one low-order bit with each odd pulse arriving at one of its inputs. Similarly, every odd signal input to the amplifier 4 power, has

positive polarity, and each odd - negative polarity.

The pulse number setting unit 19 counts the number of pulses and, when a predetermined value is reached, stops

counter 13; In the initial state, the triggers 16, 17 are in the zero state, and the triggers 24 and 33 are in the single state. In this case, the keys 34, 35. 36 closed.

When a single state of the trigger 33

the first input of the switch 31 is connected to its output; in the zero state of the trigger 33, the second input of the switch 31 is connected to its output.

The proposed device has wide functionality due to the fact that alternating bipolar pulse sequences of signals of linearly increasing (decreasing) amplitude of one

polarity and linearly decreasing (increasing) amplitude of the other polarity.

Claims (1)

Claims of the invention A device for controlling oscillations according to the author N 1429093, characterized in that, in order to expand its functionality by providing the possibility of reproducing pulse sequences of alternating polarity with a linearly increasing (decreasing) amplitude of one polarity and a linearly decreasing (increasing) amplitude of another polarity, it is equipped with a second inverter , the third, fourth, fifth keys, the third switch, the second digital-to-analog converter, the fourth trigger, the OR element, the third AND element, the second, third and fourth delay elements, the output of the first key connected to the input of the power amplifier through a parallel-connected second inverter and the third key, the first and second outputs of the second switch are connected respectively to the first and the second inputs of the OR element and, respectively, with the summing and subtracting inputs of the reversible counter through the series-connected, respectively, second delay element and four first key and the third delay element and a fifth switch, a second input of the first switch is connected to the output of the first tsifroa0 the tax converter, via the third switch, another information input of which is connected to the output of the second digital-analog converter, connected by a group of inputs to the corresponding inverse outputs of the reversible counter, the output of the fourth trigger is connected to the control inputs of the third switch and the third, fourth and fifth keys, the first the input of the third element AND is connected to the bus Mode, the second input is connected to the output of the fourth delay element connected by the input to the output of the OR element, and the output of the third element I is connected to the counting input of the fourth trigger, connected by the input of a single unit to the bus Preset. + - -v -V4 hd t MF u s