SU898443A1 - Scanning operational converter - Google Patents

Description

one

The invention relates to amplifying devices with isochrotral-pulse signal conversion and can be used in analog computers.

Known deploying operational Converter containing integrators, relay element, the adder tlj.

However, the device is characterized by low operational reliability.

Closest to the proposed is a sweep operation transducer containing an adder, integrators, relay elements, filters, and scale resistors C.

The disadvantage of the device is low reliability.

The purpose of the invention is to increase the reliability of work.

The goal is achieved by the fact that in a well-known developmental operating transducer, there is a adder, the output of which is connected to the inputs of the first, second and third integrators, the output of each of which is connected to the input of the corresponding relay element, the input of the corresponding filter and the output of the corresponding scale resistor, the second pins of the scale resistors of the connector) are the output of the sweep operation converter, which An integral feedback resistor is connected to the first input of the adder, the second input of which is the input of a developmental operational converter, the first and second additional adders, the first and second additional large-scale feedback resistors, the first, second and third elements with a positive deadband, the first , the second and the third elements with a negative insensitivity zone, the first, second, third, fourth, fifth and sixth elements And, moreover, the inputs of the first x elements with positive and negative zones of insensitivity to the output of the second filter; inputs of the second elements with positive and negative zones of insensitivity are connected; inputs of the third elements with positive and negative dead zones of the first and second additional adders respectively are connected to the output of the third filter feedback resistors are connected to the third and fourth inputs of the adder, the output of the first element with put The inactivity zone is connected to the first inputs of the first and third elements And, the output of the first element with a negative deadband is connected to the first inputs of the fourth and sixth elements And, the output of the second element with a positive deadband is connected to the second input of the first element And and the first input The second element And, the output of the second element with a negative dead band is connected to the second input of the fourth element And and to the first input of the fifth element And, the output of the third element with n A positive insensitivity zone is connected to the second inputs of the second and third And elements, the output of the third element with a negative insensitivity zone is connected to the second inputs of the fifth and sixth elements And, the outputs of the first, second and third elements of And the adder, the outputs of the fourth, fifth, and sixth elements And are connected to the corresponding inputs of the second additional adder. The drawing shows the functional diagram of the unfolding operation unit converter. An operational converter contains an adder 1, a fifth and second additional adders 2 and 3, a first, second and third

integrators 4-6, first, second, and tri-signal. 34 tiy relay elements 7-9; first, second and third filters 10-12, first, second and third elements with a positive dead band 13-15i first, second and third elements with a negative dead band 16-18, first, second, third, fourth, fifth and sixth elements And 19-24, the first, second and third scale resistors 25-27, the first and second additional scale resistors of feedback 28 and 29, the scale feedback resistor 30, input 31 and output 32 of a spreading converter. Deploy diy operating transducer works as follows. In the operating transducer, three identical input signal conversion channels are formed. The first channel is formed by blocks 4 and 7, the second by blocks 5 and 8, and the third by blocks 6 and 9. Blocks 4-6 have time constants, the values of which in general can be arbitrary. Blocks 7-9 are made with zero-level symmetric switching thresholds and are assumed to be equal to each other. The outputs of blocks 7–9 are unchanged in magnitude modulation and vary only in sign. Blocks 10–12 are designed to provide a constant component. The resistance values of the first, second, and third scale resistors 25-27 are selected based on the required signal power S of the load circuit and the current limit in the output stages of blocks 7-9. Each of the input signal conversion channels in the autonomous mode of operation (in the absence of two channels, a conversion) is a self-oscillating system. In the absence of an input signal, the switching of block 7 occurs at regular intervals, which causes a zero level of the constant component of the pulses of the output signal during the period of self-oscillations. The presence of an input signal leads to a change in the switching time intervals of block 7. As a result, the constant component of the output signal is set proportional to the level of the input signal.

Since the output 32 receives the output periodic pulse signals from the three channels, a periodic signal is generated at the output representing the sum of the three rectangular auto-oscillatory processes. The frequency of the total auto-oscillation process is synchronized with the frequency of self-oscillations of the most inertial channel of the input signal conversion. In the absence of an input signal, the average value of the self-oscillation process at the output 32 for the period of self-oscillations is zero. When there is an input signal, the average value of the signal at output 32 is proportional to the size of the input signal.

If, for example, the input signal conversion channel, including blocks 4 and 7, turned out to be inoperative, then the period of the self-oscillating process at output 32 is increased, and the constant component is set equal to zero, while the health of the operational converter is maintained i In the case of output from The second channel of the input signal conversion operation is as follows. Dead zones of blocks 13-

18 are chosen so that, taking into account the level of pulsations at the output of blocks 10-12, to exclude their false triggering in the linear portion of the static characteristic of a developing operational transducer. The output of blocks 13-18 is either zero or a fixed positive value and controls blocks 19-24.

If the conversion channels from blocks 4, 5, 7 and B are inoperable, then the signals of blocks 10 and 11 reach values greater than the dead zones of blocks 13 and 15. As a result, the inputs of the block

19 signals are given logical 1

and block 19. operates. Under the influence of the output signal of block 19, the output signals of blocks 7 and 8 are compensated and the operational converter continues to function normally. Blocks 14, 15, 20 work similarly. and 22. Blocks 16, 17, 18, 22, 23 and 24

function in the case when, as a result of the inoperability of the corresponding conversion channels, the output signals of blocks 7, 8 and 9 take a fixed negative value.

Thus, the proposed deployment operating transducer has a higher reliability of operation, while maintaining operability upon exit from some functional blocks.

Claims (2)

Invention Formula A deployment operational converter containing an adder, the output of which is connected to the inputs of the first, second and third integrators, the output of each of which is connected to the input of the corresponding relay element, the input of the corresponding filter and the output of the corresponding scale resistor are connected to the output of the corresponding relay element, the second terminals of the scale resistors are connected and are the output of a deployable operation transducer that is connected to the first input through a large-scale feedback resistor dy adder, whose second input is an operational input of the scanning transducer, characterized in that, in order to increase reliability, it entered the first and second additional adders, first and second large-scale additional feedback resistors; the first, second and third elements with a positive dead band; the first, second and third elements with negative insensitivity zone J first, second, third, fourth, fifth and sixth elements And, moreover, the inputs of the first elements with positive and negative dead zones are connected to the output of the first filter, the second inputs are connected to the output of the second filter elements with positive and negative dead zones, to the output of the third filter are connected the inputs of the third elements with positive and negative dead zones, the outputs of the first and second will complement The first and second additional feedback large-scale resistors are connected to the third and fourth inputs of the torus sum, respectively; the output of the first element with a positive deadband is connected to the first inputs of the first and third And elements; the output of the first element with a negative deadband is connected to the first the inputs of the fourth and sixth elements And, the output of the second element with a positive deadband is connected to the second input of the first element And and to the first input the second element And, the output of the second element with a negative insensitivity zone is connected to the second input of the fourth element And, and to the first input of the fifth element And, the output of the third element with a positive insensitivity zone is connected to the second inputs of the second and third elements And, the output of the third element with a negative dead zone is connected to the second inputs of the fifth and sixth elements And, the outputs of the first, second and third elements And are connected to the corresponding inputs of the first additional sum and fourth outputs of the fifth and sixth AND gates are connected to respective inputs of the second additional adder. Sources of information taken into account during the examination 1. USSR author's certificate No. 538371, cl. G 01 G 7/12, 1975. 2. USSR author's certificate for application No. 2669745/18-24, cl. G 06 G 7/12, 1979 (prototype).