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Multi-objective optimization based on Genetic Algorithm for PID controller tuning

本站小编 哈尔滨工业大学/2019-10-23

Multi-objective optimization based on Genetic Algorithm for PID controller tuning

WANG Guo-liang, Yan Wei Wu, Shao Hui He

Institute of Automation, Shanghai Jiaotong University, Shanghai 200240, China



Abstract:

To get the satisfying performance of a PID controller, this paper presents a novel Pareto-based multi-objective genetic algorithm (MOGA), which can be used to find the appropriate setting of the PID controller by analyzing the pareto optimal surfaces. Rated settings of the controller by two criteria, the error between output and reference signals and control moves, are listed on the pareto surface. Appropriate setting can be chosen under a balance between two criteria for different control purposes. A controller tuning problem for a plant with high order and time delay is chosen as an example. Simulation results show that the method of MOGA is more efficient compared with traditional tuning methods.

Key words:  multi-objective optimization  genetic algorithms  PID controller

DOI:10.11916/j.issn.1005-9113.2009.01.015

Clc Number:TP18;TP273

Fund:


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