VSTOL aircraft flight control system design using H/sub infinity / controllers and a switching strategy
- 1 January 1990
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 2975-2980 vol.6
- https://doi.org/10.1109/cdc.1990.203330
Abstract
The problem of designing controllers for plants with widely varying dynamics over the required operating envelopes is addressed. The plant investigated is a generic VSTOL aircraft model. The approach taken is to switch between linear controllers designed on linearizations of the nonlinear model. The linear designs make use of an open-loop singular value shaping technique which optimizes the system robustness to perturbations of the normalized coprime factors of the plant. Switching between controllers is achieved using a technique which enables smooth transition between controllers. It is concluded that the proposed loop-shaping approach produces robust closed-loops, giving the necessary performance capability.Keywords
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