Application of Fuzzy Self-tuning Setting PID in the Electro-hydraulic Servo System with Unsymmetrical Oil-cylinder

In order to erase the influence of uncertain parameters in the unsymmetrical oil-cylinder electro-hydraulic servo system,a fuzzy control method with adaptable coefficients was presented.The adaptable coefficients fuzzy control method was used to reduce the bound phenomenon effectively.Simulation and experimental results show that this control strategy efficiently improves trace ability of the system,and it makes the system have better dynamic performance and robustness.