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. 19, 2019
Filed:
Jun. 26, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Shinjiro Ashida, Miyoshi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A drive device includes a motor, an inverter, and a rotation angle detector. The rotation angle detector includes a resolver and an electronic control unit. The electronic control unit converts a signal from the resolver to a master rotation angle of the motor. The electronic control unit converts a signal obtained by attenuating a high frequency component of a frequency higher than a predetermined frequency with respect to the signal from the resolver to a slave rotation angle of the motor. The electronic control unit determines that the master rotation angle is normal when a determination condition that a difference between the master rotation angle and the slave rotation angle is equal to or greater than a first threshold and a temporal variation as a variation of the master rotation angle per unit time is equal to or greater than a second threshold is not established.