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:
Jul. 12, 2022
Filed:
Apr. 26, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Tomoyasu Sakaguchi, Hitachinaka, JP;
Takashi Tsutsui, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
Provided is a vehicle control device capable of suppressing a yaw angle error at startup due to an initial phase shift of pulse waveforms of right and left wheels at the startup and precisely estimating a vehicle position. A yaw angle displacement amount of the vehicle is corrected in the direction of reducing an error in the yaw angle displacement amount at the estimation start point with respect to a reference direction in which the vehicle is to travel depending on output of a pulse waveform of a wheel speed sensor provided in right and left non-steering wheels of the vehicle immediately after the startup. Specifically, a range of an estimation error in a traveling direction at the startup is limited by two steps of correction at the startup.