SU454689A1 - Analog-frequency converter slope multiplier - Google Patents

Description

I

The invention relates to an analog-digital measuring technique and can be used in conjunction with an analog frequency converter to increase its steepness.

The analog-to-frequency converters steepness multipliers are known, containing a series-connected null-organ, a threshold device, a simulator of exemplary impulses, and an integrator in a feedback circuit.

However, the known multipliers have insufficient stability of multiplying the steepness of the converter.

The aim of the invention is to increase the stability of multiplying the steepness of the converter.

To do this, the multiplier additionally includes a counter, a register and a digital-to-analog converter, the register trigger inputs are connected to the analog-frequency converter output, other register trigger inputs are connected to the counter bits outputs, the counter input is connected to the output pulse of the sample pulses, the register trigger outputs connected to the digital-to-analog converter, and the output of the digital-to-analog converter is connected to the second input of the driver of exemplary pulses.

The drawing shows a block-multiplexed block scheme.

The analog-frequency converter slope multiplier contains a series-connected null-organ 1, a threshold device 2, a driver of exemplary pulses 3 and an integrator in feedback circuit 4, the output of which is fed to one of two inputs of the null-organ 1, the other input of which is connected to the input of multiplex .

In addition to these blocks, the multiplier additionally includes a counter 5, a register 6, and a digital-to-analog converter 7, and the trigger inputs of register 6 are combined and connected to the output of the analog-frequency converter. Other inputs of the trigger register 6 are connected to the outputs of the trigger counter 5. Counter input 5 is connected to the output of the driver exemplary pulses 3, the trigger outputs of the register 6 are connected to the digital-analog converter 7, and the output

the digital-to-analog converter 7 is connected to the second input of the driver of exemplary pulses 3.

The multiplier works as follows. Converter Output

analogue frequency is applied to one of the inputs of the zero-body 1. The voltage from the output of the zero-body is fed to the threshold device 2 and then to the input of the generator of exemplary pulses 3. The pulses from the output of the generator 3 are fed to the integrator 4, and output3

The last one e11 of the latter is fed to the second input of the null organ 1.

The stability of the amplitude of the nanoparticles at the output of the analog-frequency converter is significantly lower than the stability of its output frequency. Therefore, the stability stability of the steepness gradient is obtained, since the multiplication factor of the steepness is proportional to the amplitude of the output voltage of the analog-frequency converter.

To increase the multiplication stability, devices 5, 6, 7 are used.

The pulses from the output of the imaging unit 3 (from the multiplier output) are counted by the counter 5. The output pulses of the analog-to-frequency converter do not cut the state of the counter 5 into the register 6. The digital-to-analog converter 7 produces a voltage that is applied to the second input of the imaging unit 3 pulses for adjusting their value (and, accordingly, the multiplication factor). The number of bits of devices 5, 6, 7 is determined by the maximum error of the analog-frequency conversion slope multiplier without devices 5,

6, 7. Since the counter 5 is not reset, the automatic control system, including devices 5, 6, 7, is of an astatic type. five

Subject invention

An analog-to-frequency converter slope multiplier containing serially connected null-organ, threshold device, exemplary pulse shaper, and integrator in feedback circuit, characterized in that, in order to increase the stability of slope multiplication, a counter, register, and digital an analog converter, with the register trigger inputs connected to the analog-frequency converter output, other register trigger inputs connected to the counter bits outputs, the counter input

0 is connected to the output of the driver of exemplary pulses, the outputs of the register triggers are connected to the digital-analog converter, and the output of the digital-analog converter is connected to the second input of the form5 worldizer of exemplary pulses.

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