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摘要
This paper presents a novel adaptive composite fuzzy dynamic surface controller for a variable-supply-pressure electro-hydraulic-system in the presence of unknown nonlinear friction effects. To avoid analytic calculation, command filters are utilized to produce certain virtual controllers and their derivatives. A fuzzy logic system is designed to approximate and compensate the unknown nonlinear friction influences of the electro-hydraulic-system. To achieve a precise approximation, the prediction error of a designed serial-parallel estimation model and the compensated tracking error are both used to develop the composite adaptive law. Comparative simulation and experimental results are obtained to verify the effectiveness of the proposed control method.
- 出版日期2020-1
- 单位上海交通大学
