Research on Control Strategy of Electro-Hydraulic Lifting System Based on AMESim and MATLAB

Given the influence of flow instability, parameter uncertainty, and unpredictable disturbances in electro-hydraulic lifting systems, high-precision position control for systems is challenging to achieve. This study proposes an observer–sliding mode strategy improve accuracy tractor system. Firstly, principle hoisting system analyzed. Secondly, a mathematical model established, reduced design observer achieve real-time evaluation unknown state disturbance. The sliding are then integrated into controller response. Theoretical analysis demonstrates that ensures actuator can desired effect even under disturbing effects. Finally, joint AMESim–MATLAB simulation conducting pilot studies carried out compare with PID (Proportion–Integral–Derivative) control. At same time, process test, symmetric structure as was used build ploughing depth (changes hydraulic cylinder thrust simulate changes values). results show proposed better pressure tracking change robustness than