The Position Control of the Hydraulic Cylinder Controlled by the High-Speed On-Off Valve

Posted on 11 Feb 2019 04:04 pm

This paper aims to research the position control of the hydraulic cylinder controlled by the high speed on-off valve to realize the precise position control. A compound algorithm of proportional integral & speed feed forward displacement feedback is put forward based on the research on the relationship between the duty ratio and the past flow for the high speed on-off valve. The speed feed forward displacement feedback algorithm can solve the hysteresis resulting from the feedback control and be considered as the certain duty ratio is given ahead, and the proportional integral control algorithm is designed and utilized to deal with the position error by adjusting to the duty ratio of high speed on-off valve.