Designing method of fuzzy PID (Proportion-Integration-Differential) controller

A design method and technology of fuzzy control, applied in the directions of adaptive control, general control system, control/regulation system, etc., can solve the problems of complex solution process, inability to effectively control parameter changes, etc., to reduce overshoot time and enhance stability , the effect of speeding up the response

Inactive Publication Date: 2013-09-18
SHAANXI TECHN INST OF DEFENSE IND
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a design method of a fuzzy PID controller, which aims to solve the problem that the conventional PID controller does n

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  • Designing method of fuzzy PID (Proportion-Integration-Differential) controller
  • Designing method of fuzzy PID (Proportion-Integration-Differential) controller
  • Designing method of fuzzy PID (Proportion-Integration-Differential) controller

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[0053] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0054] figure 1 Shows the flow of the fuzzy PID controller design method provided by the present invention. For ease of description, only parts related to the present invention are shown.

[0055] The design method of the fuzzy PID controller of the present invention includes the following steps:

[0056] The fuzzification of input deviation e and deviation change ec;

[0057] Determination of parameter tuning rules and fuzzy reasoning;

[0058] Establish fuzzy control table.

[0059] As an optimization scheme of the embodiment of the present invention, the steps of fuzzification of the input deviation e and deviation chang...

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Abstract

The invention discloses a designing method of fuzzy PID (Proportion-Integration-Differential) controller. The designing method comprises the following steps of fuzzifying input quantity deviation e and deviation change ec; determining parameter tuning rule and carrying out fuzzy reasoning; and establishing a fuzzy control table. The designing method has the advantages of being flexible in fuzzy control and strong in applicability by combining fuzzy control with the PID control, as well as the characteristic of being high in PID control accuracy. The controller with self-tuned PID parameter can be realized, on the basis of a conventional PID regulator, the online self-tuning fuzzy control on parameters Kp, KI and KD can be achieved by adopting the conception of fuzzy reasoning according to different absolute values of e and delta e, and the fuzzy PID controller with excellent performance can be provided.

Description

Technical field [0001] The invention belongs to the technical field of automation design, and particularly relates to a design method of a fuzzy PID controller. Background technique [0002] As we all know, the traditional PID regulator is the most widely used and most basic regulator in the industrial production process. It has the advantages of simple algorithm, good robustness, and high reliability. The PID regulation law is suitable for many industrial control objects. It is especially effective for the control of deterministic control systems that can establish precise mathematical models. However, for those control objects with nonlinear and time-varying uncertainties, it is difficult to achieve effective control by using traditional PID regulators. The controller is a new type of controller developed in recent years. Its advantage is that it does not require the grasp of the precise mathematical model of the controlled object, but organizes the decision table according to ...

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Application Information

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IPC IPC(8): G05B13/00
Inventor 殷兴光
Owner SHAANXI TECHN INST OF DEFENSE IND
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