For the valve controlled asymmetric cylinder position control system,a mathematical model of the asymmetric hydraulic cylinder was constructed through theoretical formulas,and its position control was achieved using feedforward PID control method.Simulation and experimental verification were conducted.The mathematical model of a valve controlled asymmetric cylinder position control system was conducted,based on axial control valves using transfer functions.Based on the derived mathematical model,a feedforward PID control algorithm was used to construct a simulation model,and the asymmetric hydraulic cylinder position control system was conducted using AMESim software.The correctness and effectiveness of the constructed axial control valve spool position control system and the asymmetric hydraulic cylinder position control system were verified,by conducting experiments on the valve controlled asymmetric hydraulic cylinder position control system.The precise position control and external load control are achieved based on the axial control valve spool.