He Yun

Research on pose optimal sliding mode control method for six DOF air-bearing spacecraft simulator

According to the requirements of the third phase project of Chinas lunar probe program, a six degrees of freedom (DOF) air-bearing spacecraft simulator was designed for the lunar orbiter docking with the sample transfer performance test system. A pose optimal sliding mode control strategy was proposed for the pose control of air-bearing table, which integrates sliding mode variable structure control and optimal control theory, through integral compensation term to enhance robustness of the optimal regulator, eliminate the approaching modal of sliding mode control, and solve the impact of large load inertia ratio and uncertainty factors of air-bearing pose control system on the control accuracy. Experimental results indicate that the control precision of the system meets the task requirements, and validate the correctness and feasibility of the scheme.