AUTOMATIC CONTROLLER OF VEHICLE HEIGHT

摘要

PURPOSE:To improve accuracy in adjusting a vehicle height at the time of running on a bad road, by a method wherein signals of the vehicle heights for too high and too low are detected at a fixed cycle whose differences between them are summed up and an actuator is actuated when the sum exceeds a reference value. CONSTITUTION:Signals from a vehicle height sensor is counted for a fixed period of time and numbers of too high signals and too low signals during the fixed period of time are given NH and NL respectively. A sign bit is given 1 when NH is larger than NL and is stored in RAM. The absolute values of differences are stored in 4bit RAM. Then either the too high signals or the too low signals are counted more than 50 times either a descending actuator of the vehicle height or a ascending actuator of the vehicle height is actuated. Through actuation like this, adjustment of the vehicle height is carried out accurately even if a vehicle height signal pulsates at the time of running on a bad road.