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:
Sep. 15, 1998
Filed:
Sep. 29, 1995
Mitsuo Sasaki, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
In apparatus and method for controlling a damping force characteristic for a vehicular suspension system, a relative velocity between a sprung mass and an unsprung mass is calculated using a predetermined transfer function from a sprung mass vertical velocity derived on the basis of a sprung mass acceleration signal. The predetermined transfer function is, in a embodiment, expressed as G.sub.U(S) =(QS.sup.2 +RS)/(FS.sup.2 +DS +E), wherein Q=-m.sub.1 .multidot.c.sub.2, R=-m.sub.1 .multidot.k.sub.2, F=c.sub.1 .multidot.c.sub.2, D=c.sub.1 .multidot.k.sub.2, E=k.sub.1 .multidot.k.sub.2, S denotes a Laplace operator, c.sub.1 denotes an attenuation constant of each shock absorber, c.sub.2 denotes an attenuation constant of the corresponding one of road wheels, k.sub.1 denotes a spring constant of the shock absorber. k.sub.2 denotes a spring constant of the corresponding one of the road wheels, m.sub.1 denotes the sprung mass, and m.sub.2 denotes the unsprung mass.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile