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:
Apr. 25, 2023
Filed:
May. 01, 2020
Deere & Company, Moline, IL (US);
Todd F. Velde, Dubuque, IA (US);
Alex R. Vandegrift, Davenport, IA (US);
Craig Christofferson, Dubuque, IA (US);
Christopher J. Meyer, Dubuque, IA (US);
Aaron R. Kenkel, East Dubuque, IL (US);
Mark D. Anderson, Dubuque, IA (US);
Lance R. Sherlock, Asbury, IA (US);
Kenneth Franck, Dubuque, IA (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
In embodiments, a work vehicle magnetorheological fluid (MRF) joystick system includes a joystick device, an MRF joystick resistance mechanism, and a controller architecture. The joystick device includes, in turn, a base housing, a joystick movably mounted to the base housing, and a joystick position sensor configured to monitor movement of the joystick relative to the base housing. The MRF joystick resistance mechanism is controllable to vary a first joystick stiffness resisting movement of the joystick relative to the base housing in at least one degree of freedom. The controller architecture is configured to: (i) detect when unintended joystick motion conditions occur during operation of the work vehicle; and (ii) when detecting unintended joystick motion conditions, command the MRF joystick resistance mechanism to increase the first joystick stiffness in a manner reducing susceptibility of the joystick device to unintended joystick motions.