Development of Electronic Controlled Power Steering System

Along with the rapid improvement in automobile performance, drivers are seeking improvements in the handling stability at high vehicle speeds. Drivers are also seeking light steering effort at low vehicle speeds and parking condition. However, a conventional hydraulic power steering system can not meet both requests (i.e., conflicting issues).

To resolve such conflict, we have developed Electronic Controlled Power Steering System. The main developmental goals were: develop low cost and compact system for small passenger vehicles develop an “optimum” control algorithm by using absolute neutral steering angle position and steering angular velocity.