| 摘要 |
PURPOSE:To adjust the height of a car that quickly responds to a road surface state when the integration value of the car height minimum value detected from a car height signal is decreased or increased beyond a desired car height value by elevating and adjusting the car height only for the difference of both values. CONSTITUTION:An actual car speed signal (a) from a car height sensor 1 is supplied to the sensing circuit 2 of a minimum value X2 and a minimum value signal (b) obtained here is input to an integration circuit 3. The time constant of this integration circuit 3 is normally r1 based on a control signal (c) that is given from a first time constant setting circuit 4 through a switching circuit 6. Then, an integration value signal (e) that indicates an integration value X3 obtained by integrating a minimum value X2 from this value r1 is compared with a desired car height signal (f) that indicates the upper and lower bound values Y1 and Y2 from a generation circuit 8 by a comparison circuit 7. When X3<Y2, a shock absorber is raised and adjusted. Besides, simultaneously, the movable contact Tc of the switching circuit 6 is switched to a contact Tb side through an OR circuit 13 and the said time constant is varied into r2(<r1). |
