Research on Control and Optimization of Vehicle Steering Performance

The steering characteristic of the vehicle with hydraulic power steering has the problem of too large insensitive area in high speed and poor hand feeling in normal work area. The geometrical relation between the edge of the power steering gear valve spool and the response characteristic is analyzed. The composite groove edge of valve spool is designed by straight line and arc instead of traditional single lines. It concludes that the response characteristic of composite groove is more according to theoretical curve than traditional structure and some performance indexes are improved.