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:
May. 21, 2024
Filed:
Nov. 10, 2021
Hitachi Astemo, Ltd., Ibaraki-ken, JP;
Yuichiro Minakuchi, Ibaraki, JP;
Vaibhav Gupta, Ibaraki, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
The present invention achieves a technique that makes it possible to estimate a ground contact load of a vehicle with sufficiently high accuracy. A ground contact load estimation device () acquires a wheel angular speed, a steady load, and an inertia load of a vehicle, uses the steady load and the inertia load to cause a first gain calculation section () to calculate a first gain, multiplies a variation in wheel angular speed by a second gain so as to cause a tire effective radius variation calculation section () to calculate a tire effective radius variation, and multiplies the tire effective radius variation by the first gain so as to estimate a road surface load.