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Frequency Domain Properties of EALQR with Indefinite Weighting Matrix  

Seo, Young-Bong (School of Mechanical Engineering and Research Institute of Mechanical Technology Pusan National University)
Park, Jae-Weon (School of Mechanical Engineering and Research Institute of Mechanical Technology Pusan National University)
Publication Information
Journal of Mechanical Science and Technology / v.17, no.3, 2003 , pp. 329-335 More about this Journal
Abstract
EALQR (Linear Quadratic Regulate. design with Eigenstructure Assignment capability) has the capability of exact assignment of eigenstructure with the guaranteed margins of the LQR for MIMO (Multi-Input Multi-Output) systems. However, EALQR undergoes a restriction on the state-weighting matrix Q in LQR to be indefinite with respect to the region of allowable closedloop eigenvalues. The definiteness of the weighting matrix is closely related to the robustness property of a given system. In this paper, we derive a relation between the indefinite weighting matrix Q and the robustness property for EALQR. The modified frequency domain inequality, that could be guaranteed by EQLQR with an indefinite weighting matrix, is presented.
Keywords
Eigenstructure Assignment; LQR; Frequency Domain Properties; Flight Control System;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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