Method and system for self-adjusting fuzzy PID (Proportion Integration Differentiation) parameters in furnace temperature control system

A temperature control system and parameter self-tuning technology, applied in temperature control, general control system, control/regulation system, etc., can solve the problem that PID parameters are difficult to guarantee the system control effect, and achieve the effect of good control quality

Inactive Publication Date: 2015-07-29
CHONGQING TECH & BUSINESS INST
View PDF4 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a method and system for self-tuning of fuzzy PID parameters in the furnace temperature control system, aiming to solve ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for self-adjusting fuzzy PID (Proportion Integration Differentiation) parameters in furnace temperature control system
  • Method and system for self-adjusting fuzzy PID (Proportion Integration Differentiation) parameters in furnace temperature control system
  • Method and system for self-adjusting fuzzy PID (Proportion Integration Differentiation) parameters in furnace temperature control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0058] Because the furnace temperature system control has high real-time requirements, the design adopts the method of parameter online self-tuning based on fuzzy control. Structural Diagram of Conventional Fuzzy Controller [2] Such as figure 2 shown. It is composed of fuzzy interface, database, rule base, inference engine and defuzzification interface, etc.: the fuzzy interface converts the determined input into a fuzzy vector; the database stores all fuzzy.

[0059] The membership degree vector value of the subset provides data to the reasoning machine; the rule base stores intuitive reasonin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method and a system for self-adjusting fuzzy PID (Proportion Integration Differentiation) parameters in a furnace temperature control system. The method comprises the following steps: selecting and quantifying variables in a PID controller and finding out a fuzzy relation of three PID control parameters including a proportionality coefficient KP, an integral coefficient KI and a differential coefficient KD , and system deviation e and a deviation varying rate ec; establishing a fuzzy relation table; and carrying out online modification on the three parameters by a fuzzy control method. The system corresponds to the method. After PID parameter online fuzzy self-adjustment is carried out, a normal working state is automatically switched, and a PID parameter adjusting process is automatically started when system performances are changed and the readjusted PID parameters so that the system has the better control quality.

Description

technical field [0001] The invention belongs to the technical field of furnace temperature control, in particular to a method and system for self-tuning of fuzzy PID parameters in a furnace temperature control system. Background technique [0002] Furnace temperature control system is a complex system, which has the characteristics of nonlinearity, time-varying parameters, many control variables, and delayed controlled variables. There are many uncertain factors interfering, and it is difficult to establish an accurate mathematical model. For complex systems, it is obviously inappropriate to use PID control. [0003] To improve system performance, it is first necessary to study the influence of PID adjustment parameters on the dynamic and static performance of the system, specifically including the following aspects: [0004] 1) The function of the proportional link is to reduce the deviation. Scale factor K P Increasing it can speed up the response speed, reduce the syst...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05D23/00G05B13/04
Inventor 李晓辉刘旭飞沈敏
Owner CHONGQING TECH & BUSINESS INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap