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http://dx.doi.org/10.5302/J.ICROS.2010.16.1.077

Design of Advanced Multi-loop PI Controller for Multi-delay Processes  

Vu, Truong Nguyen Luan (영남대학교 디스플레이화학공학부)
Lee, Moon-Yong (영남대학교 디스플레이화학공학부)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.16, no.1, 2010 , pp. 77-82 More about this Journal
Abstract
An analytical method for robust design of the multi-loop proportional-integral (PI) controller is proposed for various types of multi-delay processes. On the basis of the direct synthesis and generalized IMC-PID approach, the analytical tuning rules of the multi-loop PI controller are firstly derived for achieving the desired closed-loop response, and the structured singular value synthesis is then utilized for the tradeoffs between the robust stability and performance by adjusting only one design parameter (i.e., the closed-loop time constant). To verify the superiority of the proposed method, the simulation studies have been conducted on a wide variety of multivariable processes. The multi-loop PI controller designed by the proposed method shows a fast, well-balanced and robust response with the minimum integral absolute error (IAE) in compared with other renowned methods.
Keywords
multi-loop PI controller; robust control; generalized IMC-PID approach; structured singular value;
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