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| Research of Sliding Mode Controller for Flight Simulator Based on Disturbance Observer |
| LIU Xiao-Dong, WU Yun-Jie, TIAN Da-Peng, WANG Jun-Feng |
| (School of Automation Science and Electrical Engineering, Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China) |
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Abstract Because disturbance observer (DOB) underestimates the equivalent disturbances in flight simulator system, one sliding mode variable structure controller (SMVSC) based on DOB was proposed. The controller introduces additional compensation for disturbances, velocity and acceleration of tracking signals, and a new sliding approach law for the SMVSC was defined, then the system meets the conditions for the existence of generalized sliding mode. The experiments on one singleaxis flight simulator show that the proposed control scheme improves the tracking performance with more robustness against parameter uncertainty and extern disturbance, contrasted with the traditional PD+DOB scheme.
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Received: 12 October 2010
Published: 30 March 2011
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