METHOD FOR FORMING CONTROL SIGNAL OF CAR BODY

PURPOSE: To improve drastically the driving safety by generating contorl signals which controls an adjustable chassis according to the finely-divided operation criteria based on the signals representing the relative movements between the wheels and the vehicle body. CONSTITUTION: The actual wheel load fluctuation P can be detected by the signal Xar, which represents the relative movements between the wheel units Mr and the vehicle body Ma. Changes of the actual wheel load fluctuation P' is precalculated as a function of the vehicle characteristic. After that, according to certain criteria, a determination is made as to whether a situation critical to the driving safety is given and whether in the case of a situation critical to the driving safety the chassis characteristic is to be adjusted for minimization of the wheel load fluctuation.