Suspension controller

A suspension controller for a vehicle having a suspension between a body and a wheel, comprising:

• vehicle height detection means for detecting a vehicle height at a front wheel and for generating a vehicle height signal according to said detected distance;
• determination means having means for receiving said vehicle height signal, means for generating height data responsive to said vehicle height signal, means for determining whether the difference between a maximum and a minimum value of said height data during a predetermined period is greater than a reference value, said period being smaller than a cycle time of sprung mass vibration of said vehicle, and means for generating a suspension control signal in response to said height data;
• and
• a suspension characteristic alteration means for altering at least one characteristic of the suspension in response to said suspension control signal.