SU411437A1 - - Google Patents

Description

one

The invention relates to the field of automation and computer technology and is intended for use in control systems of control and regulating devices.

Known digital analyzers of frequency characteristics of objects containing a serially connected reference frequency generator, frequency divider with variable division factor, pulse distributor, reversible counter, and code-analog converter connected to the first input of the control unit and to the output of the device, the device input connected to the second input of the control unit and through the analog-code converter with an integrating counter, and the outputs of the control unit are connected to the control inputs of the transducer studio «analogue code totalizing counter and reversing adders do not possess accuracy and the Enhance Rasschirennaya range of operating frequencies, which leads to a narrowing of the field of application of the device.

The difference of the described device is that it contains AND schemes connected to the summing inputs of reversible adders, an additional pulse distributor connected to the output of a frequency divider with a variable division factor, and a reverse counter connected to the pulse distributor, the first

the inputs of the circuits “And are connected with the outputs of the reversible counters, and the second inputs - with the output of the converter“ aialog code.

The drawing shows the functional diagram of the device.

It contains a generator 1 of the reference frequency, a frequency divider 2 with a variable division factor, distributors and pulses 3 and 4, reversible counters 5 and 6, a converter code-analog 7, an integrating counter 8, a control unit 9, an analog-code converter 10, the circuits "And 11 and 12, reversible adders 13 and 14 of parallel action, 15 - the object under study.

The device works as follows. Pulses from generator 1 through divider 2, which serves to change the frequency of the stimulating effect, are sent to pulse distributors 3 and 4. From the outputs of the latter, pulses are sent to reversible counters 5 and 6, the current readings of which are proportional to the quantized values of sine and cosine, respectively. The reversible counter 5 controls the converter code-analog 7, the output signal of which is fed to the object under study 15. In addition, the pulses corresponding to the definite time marks of the generated signal are sent from the code analog converter 7 to the first input of the control unit 9.

The output signal of the object under study 15 is fed to the second input of the control unit 9 and to the potential (measuring) input of the analog-code converter 10. According to the start signal, the control unit 9 generates start-up pulses fed to the analog-code 10 converter to convert the instantaneous output values the voltage and (ar) of the object at the quantization points of ar into a digital code.

The number-pulse codes from the output of the analog-code converter 10 are fed to the pulse inputs of the circuits 11 and 12 for transferring the readings of the counters 5 and 6, respectively, to the adders 13 and 14 and to the counter 8. The operation modes of the adders 13 and 14 and the counter 8 are set control unit 9, depending on the marks of the works, determined by its input signals.

At the end of the measurement cycle, the readings of the adders 13, 14 and counter 8 will be proportional to the imaginary and real components of the frequency characteristics and the constant component of the output signal of the object 15, respectively.

If it is necessary to measure the amplitude and phase frequency characteristics, the analyzer can be equipped with an additional calculator.

Subject invention

A digital analyzer of frequency characteristics of objects containing a serially connected reference frequency generator, a frequency divider with variable division factor, pulse distributor, reversible counter, and code converter connected to the first input of the unit

control unit and the device output, the device input is connected to the second input of the control unit and through the analog-code converter to the integrating counter, and the outputs of the control unit are connected to

control inputs of the analog-code converter, an integrating counter and reversible adders, characterized in that, in order to improve the operation accuracy and to expand the field of application of the device,

it contains And diagrams connected to the summing inputs of reversible adders, an additional pulse distributor connected to the output of a frequency divider with a variable division factor, and

a reversible counter connected to the pulse distributor, the first inputs of the “P” circuits being connected to the outputs of the reversible counters, and their second inputs to the output of the transducer “analog-code.