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Robust control design for aerospace applications

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1 Author(s)
Yedavalli, R.K. ; Ohio State Univ., Columbus, OH, USA

Time-domain control design for stability robustness of linear systems with structured uncertainty is addressed. Upper bounds on the linear perturbation of an asymptotically stable linear system are obtained, making it possible to maintain stability by using the structural information of the uncertainty. A quantitative measure called the stability robustness index is introduced and used to design controllers for robust stability. The proposed state feedback control design algorithm can be used, for a given set of perturbations, to select the range of control effort for which the system is stability-robust. Conversely it can be used, for a given control effort, to determine the size of the tolerable perturbation. The algorithm is illustrated with examples from aircraft control and large-space-structure control problems

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:25 ,  Issue: 3 )