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Fuzzy self-tuning PID control method and system

A control method and self-tuning technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve the problems of signal differential noise amplification, waveform distortion, etc., to avoid the phase delay problem and improve the overall control effect. Effect

Inactive Publication Date: 2018-06-08
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0006] The purpose of this application is to provide a fuzzy self-tuning PID control method and system, so as to effectively solve the phase delay problem during signal tracking and the noise amplification and waveform distortion problems during signal differentiation, thereby improving the control effect

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  • Fuzzy self-tuning PID control method and system
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  • Fuzzy self-tuning PID control method and system

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Embodiment Construction

[0045] The core of this application is to provide a fuzzy self-tuning PID control method and system to effectively solve the phase delay problem during signal tracking and the waveform distortion and noise amplification problems during signal differentiation, thereby improving the control effect.

[0046] In order to describe the technical solutions in the embodiments of the present application more clearly and completely, the technical solutions in the embodiments of the present application will be introduced below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0047] Please refer to figure 1 , figure 1 A flow chart of a fuzzy self-...

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Abstract

The invention discloses a fuzzy self-tuning PID control method comprising the steps that an error tracking signal and an error differential signal are acquired by using a tracker and a differentiator;the tracker and the differentiator are mutually independent; and PID parameter self-tuning is performed according to the error tracking signal and the error differential signal by using a fuzzy self-tuning PID algorithm, and the total control amount is calculated according to the PID parameters after self-tuning and outputted to the controlled object so that the controlled object is adjusted andcontrolled. The mutually independent tracker and the differentiator are adopted, and the error tracking signal and the error differential signal of great performance can be acquired by reasonably setting the relevant parameters of the tracker and the differentiator so that the contradiction between the problem of phase delay in case of signal tracking and the problem of noise amplification and waveform distortion in case of signal differentiation can be avoided and the overall control effect can be effectively enhanced. The invention also discloses a fuzzy self-tuning PID control system whichhas the beneficial effects.

Description

technical field [0001] The present application relates to the technical field of automatic control, in particular to a fuzzy self-tuning PID control method and system. Background technique [0002] PID control technology is still the basic process control technology commonly used in industrial sites. Fuzzy self-tuning PID control technology combines fuzzy intelligent control technology and PID parameter self-tuning technology on the basis of classic PID control technology, and outputs a reasonable total control amount according to the error signal and the differential signal of the error signal, so that the controlled object has relative Better dynamic performance and static performance. [0003] In the prior art, in order to solve the contradiction between rapidity and overshoot in the PID control process, the tracking differentiator in the active disturbance rejection control is used to track and differentiate the error signal of the system, so that according to the obtai...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 高健刘亚超陈新陈云汤晖张昱杨志军贺云波张凯
Owner GUANGDONG UNIV OF TECH
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