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Modal space sliding-mode control of structures

✍ Scribed by Adhikari, Rajesh; Yamaguchi, Hiroki; Yamazaki, Toshiki

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 181 KB
Volume: 27
Category: Article
ISSN: 0098-8847
DOI: 10.1002/(sici)1096-9845(1998110)27:11<1303::aid-eqe785>3.0.co;2-j

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✦ Synopsis

For dynamical systems expressed in state-space form or for systems with non-classical damping, the reduction of the structural model into the modal co-ordinates involves complex modal analysis with complex modal co-ordinates. Sliding-mode Control (SMC) is formulated herein in terms of such complex modal co-ordinates and the resulting control scheme is applied to the Benchmark problem consisting of the building-AMD system. Model reduction is achieved on the basis of the spectral analysis as well as wavelet analysis of the response of the system. Suitable provision is then provided to eliminate the effects of the neglected higher modes on the control performance. It is seen that the performances of MS-SMC are comparable to those of LQG.

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