Control Method of Hydraulic Impact in Shield Grouting Machine

Abstract

There exists serious hydraulic impact problem in Shield grouting machine when the piston changes its direction, and the main cause is the inertia force. So, acceleration and deceleration control algorithm are used, by site type discrete T curve to control the oil flow into the hydraulic cylinder for movement segmentation process, control piston velocity, reduce hydraulic shock. AMESim simulation and experimental validation by the master cylinder acceleration and deceleration control algorithm is reasonable and can meet the design requirements and project requirements.