¹State Key Lab. of Industrial Control Technology, Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, China
²School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China

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Abstract—A Multi-PI control strategy is presented for block-structured nonlinear systems, aiming to overcome the drawbacks of the conventional nonlinearity inversion control method and improve the closed-loop control performance. Besides, the proposed Multi-PI method applies the traditional PI control algorithm to complex nonlinear systems, simplifying the control problems largely and reducing computation load greatly. Two benchmark systems are studied to demonstrate the effectiveness of the proposed control method.

Index Terms—Block-structured systems, Multi-PI control, included angle dividing method, nonlinearity inversion method.

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Cite: Jingjing Du, Chunyue Song, "Multi-PI Control for Block-structured Nonlinear Systems," Journal of Computers vol. 7, no. 12, pp. 3044-3051, 2012.