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. 19, 2019
Filed:
Oct. 05, 2015
Hitachi Construction Machinery Co., Ltd., Taito-ku, Tokyo, JP;
Masanori Ichinose, Tsukuba, JP;
Shinjiro Saito, Kasumigaura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A steering control device () for a working vehicle includes an electric motor device () that generates an assistance torque to a steering column (), and an inverter (). The steering control device () includes a load torque sensor () that is attached between the electric motor device () and a load portion of a steering mechanism unit () to detect a load torque applied on a steering system, a steering load torque calculating section () that calculates a steering load torque based upon an output value of the load torque sensor (), and an assistance torque calculating section () that adds the steering load torque outputted from the steering load torque calculating section () and a target steering torque input from an exterior to calculate an assistance torque to command the electric motor device () and command the inverter ().