Design of a fuzzy-PID controller for a nonlinear hydraulic turbine governing system by using a novel gravitational search algorithm based on Cauchy mutation and mass weighting

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• 作者：Chaoshun Li^a ; ^{csli@hust.edu.cn} ; Yifeng Mao^a ; Jianzhong Zhou^a ; Nan Zhang^a ; Xueli An^b
• 关键词：Gravitational search algorithm ; Cauchy mutation ; Mass weighting ; Hydraulic turbine governing system ; Fuzzy-PID controller
• 刊名：Applied Soft Computing
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：52
• 期：Complete
• 页码：290-305
• 全文大小：1244 K
• 卷排序：52

文摘

A novel gravitational search algorithm based on Cauchy mutation and mass weighing (GSA-CW) has been proposed. In GSA-CW, a weighting strategy is designed to accelerate the convergence by assigning weights to agents in mass calculation. In GSA-CW, a combined mutation strategy based on Cauchy and Gaussian distribution is proposed to balance the exploration and exploitation ability. A fuzzy-PID controller is designed to solve the control problem of a complicated HTGS. Results of numerical function optimization and fuzzy-PID controller design have shown superiority of the proposed algorithm.