Patent ID: 7226082

Claim:
A vibration control system for electric tilt steering including a lower stationary column and an upper moveable column through which is rotatably passed a steering shaft having a steering wheel attached to a distal end which projects into a cabin of an automotive vehicle, the moveable column being linked in vertically tiltable fashion to the distal end of the stationary column and the stationary column being fixed to a vehicle body, with tilting movement of the moveable column being driven by an electric motor to adjust a vertical position of the moveable column, said control system comprising: a control signal generating device for generating control signal having control frequency and control phase for attenuating vibration input to the steering on the basis of a signal synchronized with operation of a vehicle engine, and a drive controlling device for controlling drive of the electric motor on the basis of the control signal so that the electric motor is driven to give oscillation to the steering in order to attenuate vibration input to the steering.