The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Nov. 02, 1988
Masao Adachi, Sagamihara, JP;
Motohisa Funabashi, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an active suspension control system for a vehicle, a unit for adjusting the distance between each wheel and the body, i.e., a vehicle body height adjusting unit is added to the conventional suspension using a spring and a damper in combination. Since the amount of adjustment to be done by the body height adjusting unit is determined in accordance with the cause of generation of such a vibration of the vehicle as pitching or rolling, the suspension control system further comprises sensors for detecting pitching and rolling angles of the vehicle, respectively, a sensor, associated with each wheel, for detecting a relative displacement in the distance between each wheel and the body and an arithmetic unit, for example, a microcomputer for determining the amount of adjustement by the body height adjusting unit on the basis of the output of each sensor. The arithmetic unit discriminates a cause from predeterminedly sorted causes on the basis of the detected pitching angle, rolling angle and distance displacement and determines a target value of the distance between each wheel and the body, that is, an amount of adjustment by the body height adjusting unit on the basis of the discriminated cause and the distance displacement.