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. 03, 2022
Filed:
Aug. 24, 2018
Kobe Steel, Ltd., Kobe, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Koji Inoue, Kobe, JP;
Hiroshi Hashimoto, Kobe, JP;
Kobe Steel, Ltd., Kobe, JP;
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima, JP;
Abstract
A force sense imparting operation device that imparts a force sense in accordance with a load acting on an actuation device. The device includes an operation member, a displacement detector, a load detector, a force sense generator that imparts a force sense to an operator who operates the operation member, a current controller that performs an actual control and a preliminary control, the actual control increasing the force sense imparted by the force sense generator by increasing an excitation current in response to an increase in the load, the preliminary control supplying the excitation current to an excitation coil prior to the actual control, the excitation current supplied by the preliminary control being set to a preliminary current value lower than the excitation current supplied to the excitation coil under the actual control, and a current supplying portion that supplies the excitation current to the excitation coil.