POWER STEERING SYSTEM

摘要

A power steering system, which is disposed in the forward part of a vehicle, allows an electric motor (4) to boost the steering torque applied by a driver, and transmits the steering torque to wheels via a steering transmission mechanism. The power steering system includes an impact detection means (25, 30) for detecting the impact of an object on a rack housing that houses a rack bar constituting the steering transmission mechanism to detect the impact on the power steering system 1 more accurately.