|Table of Contents|

Temperature and humidity control for environmental test chamber based on genetic algorithmoptimized parameters of PID controller(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2017年04期
Page:
511-
Research Field:
Publishing date:

Info

Title:
Temperature and humidity control for environmental test chamber based on genetic algorithmoptimized parameters of PID controller
Author(s):
Li ShujiangZhao ChenSu XihuiWang Xiangdong
School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China
Keywords:
environmental test chamber temperature and humidity control genetic algorithm proportion integral differential controller decoupling
PACS:
TP273.5
DOI:
10.14177/j.cnki.32-1397n.2017.41.04.017
Abstract:
The control system of temperature and humidity in the big volume environmental test chamber has the characteristics of nonlinearity,time-varying and coupling.The traditional parameter tuning method of proportion integral differential(PID)can not meet the requirements of the temperature and humidity control in the environmental test chamber.The intelligent control of the temperature and humidity of the environmental test chamber can be realized only by obtaining the optimal parameters of the PID controller.This paper proposes a control algorithm based on genetic algorithm(GA)optimized parameters of PID controller,which is named as GA-PID.Firstly,the temperature and humidity is decoupled by the predictive decoupling method.The objective function is used as the evaluation value of the controller,and the optimal solution of PID control parameters can be obtained through the selection,crossover and mutation of genetic algorithm.The proposed control algorithm can make up the deficiency of conventional PID in temperature and humidity control system.Simulation experiment is carried out by MATLAB.The results show that the temperature and humidity can be effectively decoupled,the GA-PID control algorithm can achieve a more rapid,accurate and stable temperature and humidity control.The proposed control system has better control performance.

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Last Update: 2017-08-31