Fault diagnosis of excavator hydraulic system based on expert system

Abstract

For complex electromechanical and hydraulic configuration, there are more and more types and forms of faults in Hydraulic Excavator. It is difficulty to exact diagnosis various faults using a single discrimination method, because its mechanical, electrical, hydraulic and control subsystems have strong interact and coupling. The thesis studied the fault diagnosis system based on expert system through engineer practicing. A fault diagnosis research framework is proposed and the whole system scheme is designed. © 2011 Springer-Verlag.