SU911460A2 - Extremum regulator for objects with relay - Google Patents

Description

(5) EXTREME OVJECT REGULATOR

I

This invention relates to an automatic transport delay with objects with extreme static characteristics.

According to the main author: tf 792218, an extremal controller is known, which is used to automatically control objects, during the operation of which the transport delay does not change. This controller contains the inverse model of the linear part of the object, serially connected multiplying link, amplifier and adder, the second input of the adder is connected to the output of the search signal generator, and the output is from the integrator input, two differentiators whose outputs are connected to the corresponding inputs of the multiplying link, and the inputs respectively, with the output of the integrator and the output of the inverse model of the linear suit of the object ll. WITH TRANSFER LAYOUT

A necessary condition for the normal operation of this extreme controller is as follows: the period T of the sine wave signal of the search generator must be a natural number of times less than the transport delay time. If this condition is violated, then when managing objects with variable transport delay, dependent

For example, from the magnitude of the input signal, the speed and accuracy of the adjustment can be significantly reduced, and sometimes the system can be in areas of "unstable operation."

15

A change in the transport delay when the period T is constant causes a phase shift between the signals applied to the inputs of the multiplier link. Availability

20 phase shifts in angles intervals

ti IT

(O -, (j - 0) reduces the control signal at the input

391

the adder from the feedback circuit, which increases the time for the system to reach the zone of optimal operation. The phase shift in the interval of angles W causes a change in the sign of the feedback signal; and the system becomes unstable.

The purpose of the invention is to improve the accuracy of the extreme controller when controlling the o6T eKtoM with a variable transport delay, depending on the magnitude of the input signal, preventing the system from going to a stable operation mode.

The goal is achieved by the fact that a comparison authority, two inputs of which are connected respectively to the integrator input and a driver output, and an actuator connected between the output of the comparison authority and the input of the search signal generator are entered into a known extreme controller.

The drawing shows a functional diagram of the controller.

The extreme controller for objects with transport delay depending on the size of the input signal contains the generator 1 of the search signals, the adder 2, the integrator 3, the inverse model of the linear part of the object with the transfer function of the linear inertial part of the control object, differentiators 5 and 6, multiplier link 7 , the feedback signal amplifier 8, the setting device 9. the comparison body 10 and the executive body 11. The regulator hastily optimizes the operation of the control object 12 having an extreme static characteristic and having a transfer function of a linear inertial link with variable transport delay.

Changing the input signal of the control object leads to a corresponding

the change in the transport delay time and the appearance of a phase shift. To eliminate the latter, a period of the search signal is needed. Its value is determined by comparing the input signal of the control object 12 with some calibrated signal, which is generated by the driver 9. The co-operation obtained on the organ 10 is used to control the actuator 11 to change the period of the search signal of the generator 1 until the phase shift is eliminated.

The proposed extreme controller for objects with a variable transport delay allows the phase shift to be eliminated by changing the period of the search generator signal if the transport delay time depends on the value of the input signal of the object. This ensures a constant high speed of the system, high accuracy of regulation and completely eliminates the output of the system in an unstable mode of operation.

Claims of the Invention Extreme controller for objects with a transport delay by auth.St. N 792218, characterized in that, in order to improve the accuracy of the regulator, an additional organ is added to it, compared, two inputs of which are connected respectively to the integrator input and the output of the driver, and an actuator connected between the output of the reference organ and the search generator input signals.

Sources of information taken into account in the examination

1. USSR author's certificate No. 792218, cl. 6 05 V 13/02, 1979 (prototype). .

Claims (1)

The claims of the invention Extreme regulator for objects with transport delay 79 ’792218, characterized in that, in order to increase the accuracy of the regulator, an additional comparison body is introduced into it, two inputs of which are connected respectively to the input of the integrator and the output of the master device, and an executive body is connected between the output of the comparison body and the input of the search signal generator.