Research on new intelligent pump control based on sliding mode variable structure control

This paper focuses on control design of a new intelligent pump. Firstly, the structure and working principle of the intelligent pump system were analyzed, and then the mathematical model of the brushless DC motor driving the swashplate was established. The sliding mode variable structure control method was adopted for the position control of the intelligent pump swashplate. The whole controller of intelligent pump consisted of sliding mode variable structure position control loop and PID pressure/power control loop. Finally, the co-simulation model of intelligent pump system, aileron load system and controller were built in LMS-AMESim and MATLAB/Simulink. The simulation results have shown that the proposed sliding mode variable structure control method was effective for the control of intelligent pump system, and had good robustness and dynamic characteristics.