Research on Impacted Factors to Dynamic Performance Parameters of Single Piston Rod Hydraulic Cylinder

The designed single piston rod hydraulic cylinder was selected as the research object,the mathematical model of the hydraulic cylinder was established. It was received by analyzing that the natural frequency and damping ratio of the hydraulic cylinder were related to the factors such as equivalent mass,load capacity,piston area,the elastic modulus of hydraulic medium. In the process of the piston rod stretching out,the changes of natural frequency and damping ratio of thye hydraulic cylinder were obtained,which had important reference value to the mathematical modeling and analysis for valve controlling cylinder system and cubage controlling rate system.