An adaptive control scheme for systems with unknown actuator failures |
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Authors: | Gang TaoAuthor Vitae Shuhao ChenAuthor Vitae |
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Affiliation: | a Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22903, USA b NASA Langley Research Center, Mail Stop 161, Hampton, VA 23681, USA |
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Abstract: | A state feedback output tracking adaptive control scheme is developed for plants with actuator failures characterized by the failure pattern that some inputs are stuck at some unknown fixed values at unknown time instants. New controller parametrization and adaptive law are developed under some relaxed system conditions. All closed-loop signals are bounded and the plant output tracks a given reference output asymptotically, despite the uncertainties in actuator failures and plant parameters. Simulation results verify the desired adaptive control system performance in the presence of actuator failures. |
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Keywords: | Actuator failure Adaptive control Plant-model output matching State feedback Output tracking |
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