Electro-hydraulic position synchronous servo system based on adaptive sliding mode control

Aiming at the common problems in electro-hydraulic servo system, such as nonlinear friction, external interference force and parameter uncertainty, an adaptive sliding mode control strategy is designed based on the combination of adaptive control and sliding mode control. In order to ensure the precision of position synchronization, a cross-coupling strategy is introduced in adaptive sliding mode control. Finally, through tracking simulation test, compared with PID control method, it is verified that adaptive sliding mode control has better position tracking accuracy and synchronous control accuracy, and the response time is faster, and the anti-interference ability is stronger.