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:
Feb. 23, 2021
Filed:
Sep. 13, 2017
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Ryusuke Hirao, Kamagaya, JP;
Kentaro Kasuya, Utsunomiya, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
An object of the present invention is to provide a suspension control apparatus allowing a vehicle state to be easily estimated with use of a vehicle height sensor. A controllerincludes an external force estimation portion, which calculates an external force applied to a vehicle body from a displacement calculated from a vehicle height sensor, a vertical force calculation portionA, which calculates a vertical force of the vehicle bodyfrom the calculated external force, a sprung acceleration calculation portionB, which calculates an acceleration from the calculated vertical force, a filter portionC, which estimates a sprung speed of the vehicle bodyfrom the calculated acceleration, and a damping characteristic determination portion, which acquires a damping characteristic based on the estimated sprung speed.