SU432460A1 - AUTOMATIC REGULATOR OF PARAMETERS OF INDUSTRIAL PROCESSES - Google Patents

Description

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The invention relates to the field of automatic control and is intended for use in precision automatic control systems of various technological parameters.

Automatic process parameter controllers are known that contain a sensor whose output is connected to a measuring transducer through a programmable suppressor unit and a setter, made in the form of two stepper motors connected to sliders of series-connected potentiometers, and control circuits that control and actuator unit connected to to the output of the measuring converter through the programmable secondary setter unit, made in the form of a stepper motor connected to with a potentiometer, a control circuit, and a software control unit, including a program setting circuit and an output pulse shaper, through which one output of the program setting circuit is connected to the control circuits of the programmable suppressor and setter units and the programmable secondary setter. The disadvantage of these controllers is their complexity and low reliability of operation.

In order to simplify and increase the reliability of operation, the software control unit contains an engine switch, made in the form of two power switches connected to the trigger, through which another output of the program setting circuit is connected to the middle points of the stepper motor windings of the programmable suppressor and master and programmable secondary master. The drawing shows a functional diagram of the described device, which contains: sensor 1, programmable suppressor unit and unit 2 unit, measuring device 3, software control unit 4, control and actuation unit 5, unit

programmable secondary setter 6, suppressor and setpoint potentiometers 7 and 8, scrambler suppressor and setpoint motors 9 and 10, stepper motor secondary setter I, secondary setpoint potentiometer 12, program setting circuit 13, output pulse driver 14, motor switch 15, stepper control circuit motors 16, output trigger 17, turn on 18, descent circuit 19, triggers 20 and 21, and windings of stepper motors 22.

The regulator works as follows. Sensor 1 installed on the object perceives and measures the signal proportional to the adjustable parameter, which is supplied to the input of the measuring device 3. In series with the signal from sensor 1, the signal proportional to the level of suppression and setting of the parameter taken from the sliders 7 and 8 "coarse and accurate potentiometer of the suppressor emf-set point (signal converter unit) 2. The potentiometer motors 7 and 8, respectively, are connected and moved by stepper motors 9 and 10; however, the middle points of the control (excitation) windings 22 pass a current in accordance with the program being set on the suppression or setting subband. The command information in accordance with the set level and rate of change (or time delay of the section) of the programmable suppression signal or task, as well as the section number commands, the order of switching sections and suppression and reference subbands, the direction of the speed change (increase or decrease) and other commands are formed in the program carrier block 4 and from the program assignment scheme 13, the control circuit 16 of a 16-pin electric motor 9 or 10 is supplied. Command information signals are removed from the output trigger 14 and the post This is supplied through the control circuit 16 to all windings 22 of stepper motors 9 or 10. The connection signals of the pressure subbands and tasks taken from the trigger 17 and the power switches 18 of the switch 15 are applied to the middle point of the windings 22 of the stepping motor of the suppression channels or the task, closing the whole circuit control and excitation scap motor. Depending on the number of pulses following the motor, it works out the movement of the shaft and potentiometer at a certain angle with a certain speed depending on the pulse frequency, thereby changing the voltage of the programmable suppression signal ("roughly") or setting ("exactly") the input of the measuring device 3. The programming channels with the secondary setter work in the same way. The difference lies in the fact that the communication lines in this case are supplied to the control circuit 16 of the schagovy electric motor 11 embedded in the unit of the secondary setter 6, and one of the outputs 17, 18 of the switch 15 is supplied to the winding of the electric motor 9 or 10 " coarse or fine potentiometers 7 and 8, another output 17, 18 of the coaxial switch 15 is supplied to the windings 22 of the stepper motor 11, built into the secondary control unit 6.

Subject invention

An automatic regulator of production process parameters, containing a sensor, the output of which is connected to the measuring transducer through a programmable suppressor unit and setter, made in the form of two shchagovyh engines connected to the sliders of series-connected potentiometers, and a control circuit that adjusts and executes the output device measuring transducer through a programmable secondary setter unit, made in the form of a scap engine, connected to the engine ntsiometra and control circuit, and a program control unit, comprising:

the program setting circuit and the output pulse shaper, by which one output of the program setting circuit is connected to the control circuits of the programmable suppressor and master blocks and the programmed secondary master, characterized in that, to simplify and improve the reliability of operation, the program control block contains motor switch made as connected

to the trigger of two power switches through which another output of the program setting circuit is connected to the middle points of the windings of the stepping motors of the blocks of the programmable suppressor and master and programmable

secondary setter.

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