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Direct position plus velocity feedback control of large flexible space structures

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3 Author(s)
Izhak Bar-Kana ; Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA ; Fischl, Robert ; Kalata, Paul

The authors demonstrate the feasibility of shape and position control of large flexible structures with collocated sensors and actuators using direct position-plus-velocity feedback. This result is important for large space structures where the number of modes is very large and eventually unknown. When the number of inputs equals the number of outputs, the stabilizing feedback gain stands for any positive definite matrix, including diagonal matrices. This result may explain the success of decentralized adaptive controllers when a reasonable number of sensors is used to satisfy the observability assumption

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Automatic Control, IEEE Transactions on  (Volume:36 ,  Issue: 10 )