Automatization of Excavator and Study of its Autocontrol

Aiming at the hot topic of automatic control of excavator, a hydraulic excavator is retrofitted in this paper. Electro-hydraulic proportional valves are installed. The feedback control and intelligent monitoring system is designed based on CAN bus. The motion control model of excavator´s working unit is deduced. According to the characteristics such as nonlinearity, parameter uncertainties and external disturbance of electro-hydraulic control system, this paper presents a fuzzy controller to deal with the motion control system. The simulation results demonstrate that fuzzy controller is good for excavator´s motion control, this provides a frame of reference for homologous works.