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:
Nov. 07, 2023
Filed:
Dec. 23, 2020
Caterpillar Inc., Peoria, IL (US);
Jesse R. Gerdes, Dunlap, IL (US);
Thomas M. Sopko, Washington, IL (US);
Carlos E. Nino Baron, Edwards, IL (US);
Jackson Wai, Dunlap, IL (US);
Ahmed Khalil, Dunlap, IL (US);
Sajan Abdul, Dunlap, IL (US);
Amara Ashfaq, Dunlap, IL (US);
James Michael Thorne, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A work machine includes a frame, a traction system supporting the frame, a power source mounted on the frame, a switched reluctance motor, an inverter configured to control power to the motor from a power source, and a controller. The controller is configured to receive a signal indicating a desired torque and determine if the desired torque is between an upper threshold and a lower threshold. If the desired torque is between the upper threshold and the lower threshold, pulse width modulation is used to produce a PWM adjusted torque command, and the motor is commanded based on the PWM adjusted torque command. The PWM adjusted torque command is configured to cycle between the upper threshold and the lower threshold to produce the desired torque.