SU595702A1 - Device for control of technological parameter - Google Patents

Description

io-integral or proportional-integral-integral-differential), affecting respectively the costs of the refrigerant and heat stopper, unit 4 parameters, the reference signal from which) the first unit to regulators 2 and 3 through the adders n and (, and its; 1 mechanisms, for example Iormalio closed valve 7 and normally open valve 8. Ma second inputs of adders 5 and 6 set the reference signal from preset 4 through generating 9 preset signals. Adder 5 and the assignments for connecting to the setpoint from the setting 4 to the first regulator 2, and the adder b - for subtraction from the sigal of the assignment to the second controller 3, the magnitudes, the Rabbi of the required insensitivity.

FIG. 2 conditionally shows the actual values of the reference value of the tl-parameter, taken from the setting device 4 by the size, and shifted along the vertical axis of the temperature of this sigial, the setting value / 3, for the controller 2, affecting the coolant flow rate of the gate, and the value / s. torus 3 acting on the current of the heatgate.

The device works as follows.

With the current sunflowers x within the target zone, t. when the adjustable parameter is greater than the set / s,, and less than the specified / s,. the command signal from regulator 3 is reduced by closing the normally closed clanan 7, and the command signal from regulator 2 is increased by closing the normal open clan regulator 8.

As a result, the integral part of the output of the regulators 2 and 3 and its expiration (the output of regulator 2 reaches its maximum, and the output of regulator 3 is the minimum) and clans 7 and 8 are closed.

Tenloagent and refrigerant in the system do not add up to those holes, but the adjustable parameter will not go beyond the limits of the preset value zone, which is essentially a non-sensitive zone.

The temperature deviation below the setpoint zone (below ti,) causes an increase in the signal of the regulator 3, which opens the normally closed clan 7 at the tenloagent feed, the normally open valve 8 remains closed.

Opening temperature above the specified zone (above "3) causes a decrease in the signal of the regulator 2, which opens the normal open clan 8 on the feed; 1 ad h1, while the third valve remains closed.

Thus, according to the current temperature value of the task (inside the task area), valves 7 and 8 are in the closed position, and the deviation of the temperature from the task socket opens one of them, depending on the sign of the deviation.

Due to the introduction of sensitivity sensitivity, the magnitude of which is set depending on the allowable static error of regression, and the accuracy of the device increases.

In addition, due to the fact that the device includes a dual-circuit system, it is possible to use the optical and dynamic parameters of the regulators and each of the control channels and thereby improve the quality of the regulation.

Ф орм ул а and 3 о б р е e and u

A device for regulating a technological gauge contains 1, its gauge is connected to the nerve input of the nerve regulator, an indicator of the parameter, two dry meters and two sensitization mechanisms, in order to determine the reliability of the device, it contains a driver for setting the second signal controller, the input of which is connected to the sensor of the parameter, the output of the setting device of the parameter is connected to the input of the task shaper and to the first inputs of the adders, the second inputs of which are connected to the corresponding output. Formation of the task generator, and the outputs of the adders are connected to the second inputs of the regulators, the outputs of which are connected with the corresponding power mechanisms.

Sources of information taken into account at the examination

1. Journal “Paitit and Xarnish Prod, 1971 11, pp. 53-57.

2. Author's certificate number 396671, cl. G 05D 21/00, 1972.

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