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Method and device for designing anti-interference PID controller

A design method and controller technology, applied in the direction of electric controllers, controllers with specific characteristics, etc., can solve problems such as complex setting formulas, and achieve the effect of good robustness

Active Publication Date: 2019-12-10
HUAQIAO UNIVERSITY
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a design method and device for an anti-disturbance PID controller, which overcomes that the tuning formula of the existing PID controller is too complicated, and in the feedback channel, other dynamic compensations are required in addition to the PID controller device problem

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  • Method and device for designing anti-interference PID controller

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Embodiment Construction

[0061] see Figure 1 to Figure 6 As shown, a design method and device of an anti-disturbance PID controller of the present invention, in order to overcome the problem that the tuning formula of the existing PID controller is too complicated, and in the feedback channel, other dynamic compensators are needed in addition to the PID controller; The present invention obtains the anti-disturbance design method of the PID controller by establishing the association between the anti-disturbance control and the PID feedback control. The filter has the effect of smoothing and filtering the input signal to overcome the impact on the control system caused by the jump of the input signal; the PID feedback controller has the form of a PI-PD controller, wherein the PD controller is used to realize the control of the object For high-frequency compensation, the PI controller is an equivalent disturbance observer; the final form of the anti-disturbance PID controller is determined by the relati...

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Abstract

The invention provides a design method for an anti-interference PID controller, and the method comprises the steps: constructing an anti-interference PID control structure which comprises a pre-filterand a PID feedback controller; for the established anti-interference PID control structure, carrying out equivalent transformation of a structure diagram through anti-interference control designed bya control system, and obtaining the composition of the pre-filter and the composition of the PID feedback controller; determining a final form of the anti-interference PID control structure accordingto the relative order of the controlled system; and selecting parameters of the anti-interference PID control structure. The invention further provides a design device of the anti-interference PID controller. The method and the device have the advantages that the anti-interference PID controller designed by the technical scheme of the invention has active anti-interference capability and relatively good robustness; meanwhile, few parameters are selected, the physical significance is clear, and the control effect is excellent.

Description

technical field [0001] The invention relates to the field of industrial control, in particular to a design method and device of an anti-disturbance PID controller. Background technique [0002] In industrial control, the proportional-integral-derivative (PID) controller is widely used, because the PID controller has the characteristics of simple structure and strong robustness. Compared with the existing more advanced control technologies, such as: Active Disturbance Rejection Control (ADRC), etc., PID control is considered to be a control method with relatively poor performance. [0003] At present, there are many researches on PID control technology and application, but the active anti-disturbance control scheme of PID controller is still blank, and the anti-disturbance control mechanism is still unclear. Although there are related patent technologies (such as a method for tuning the parameters of a reduced-order ADRC controller based on a PID controller disclosed in a Ch...

Claims

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Application Information

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IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 聂卓赟朱超李高铭程前
Owner HUAQIAO UNIVERSITY
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