Title :
μ-Interaction Measure for Unstable Systems
Author :
Kariwala, Vinay ; Forbes, J. Fraser ; Skogestad, Sigurd
Author_Institution :
Div. of Chem. & Biomolecular Eng., Nanyang Technol. Univ.
Abstract :
The requirement that the system and its block diagonal elements have the same unstable poles limits the applicability of μ interaction measure (μ-IM) to stable systems. We propose an extension of the conventional μ-IM to overcome this difficulty. The decentralized controller is designed based on a block diagonal approximation that is different from the block diagonal elements and is selected by minimizing the scaled L∞ distance between the system and the approximation. We also present a simple method for designing the decentralized controller based on the approximation. The proposed method is useful for system stabilization using independent designs of the decentralized controller
Keywords :
approximation theory; control system synthesis; decentralised control; stability; μ-interaction measure; block diagonal approximation; decentralized controller design; unstable systems; Biological materials; Chemical elements; Chemical engineering; Chemical technology; Closed loop systems; Control systems; Design methodology; Large-scale systems; Materials science and technology; Performance loss; Decentralized control; Large-scale systems; Structured singular value;
Conference_Titel :
Control, Automation, Robotics and Vision, 2006. ICARCV '06. 9th International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0341-3
Electronic_ISBN :
1-4214-042-1
DOI :
10.1109/ICARCV.2006.345132
