Reliability Analysis of the Electric Hydraulic Power Steering Controller Based on Fault Tree Method

摘要

A fault tree model of the electric hydraulic power steering controller has been built and the minimum cut sets leading to the fault of system has been found out. Then, the method of count reliability prediction is used to get the failure rate of each basic event and the type of failure distribution. We use MATLAB to get the top event probability and the possibility importance and relative importance of each basic event. Lastly, MATLAB, based on Monte Carlo simulation, is used to make the simulation of fault tree model accurate and to calculate reliability index. The accuracy of this method is verified perfectly by calculating. Especially for complex system, this method of reliability analysis is of great significance.