Reduced-order robust multivariable control of a double-beam cantilever structure

Scott, Robin, Manning, Warren and Levesley, Martin (2007) Reduced-order robust multivariable control of a double-beam cantilever structure. Journal of intelligent material systems and structures, 18 (7). 3-13.. ISSN 1045-389X

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Abstract

Vibration control of a two-dimensional smart structure is presented. The least squares identification technique and a novel pole identification method are used to obtain accurate plant models. Comparable accuracy is achieved with a significantly lower model order using the latter method. A multivariable multi—input multi—output (MIMO) generalized minimum variance control scheme is used to address robustness issues of plant mismodeling, unmodeled modes/dynamics and control signal saturation. The controllers are tested for robustness to spillover problems. Results are further supported with the use of sensitivity response functions.