Coupled Simulation Study on the Working Device of the Excavator Based on VL Motion

Abstract

On the foundation of analyzing the excavator’s working device structure, this paper built its three-dimensional model in Catia embedded in the VL Motion, created the bodies, defined the joints and corresponding drive interface to produce the multi-body dynamic model. According to the analysis on the hydraulic system of the working device, it built the electro-hydraulic system with the interface of Motion in AMEsim and then performed the coupled simulation between the Motion and AMEsim. Aiming at the working device’s performance defects, such as the worse displacement tracking, the slow respond, it designed the PID closed loop control system to improve the system’s performance. The simulation results show that the working device’s combination performance has been improved greatly, respond speed becomes fast and the ability of displacement tracking is better.