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. 12, 2024
Filed:
Nov. 28, 2022
Mitsubishi Electric Corporation, Tokyo, JP;
Masutaka Watanabe, Tokyo, JP;
Kensuke Hayashi, Tokyo, JP;
Masanori Tsuchihashi, Tokyo, JP;
Eiji Kanazawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
To provide a rotational angle detection apparatus which can determine abnormality of the rotational angle detection apparatus only by detection information of the rotational angle detection apparatus even when the rotational speed is low. A rotational angle detection apparatus totals sensor output values of N−1 pieces of the rotation detection sensors other than the diagnosis object sensor; calculates a value obtained by inverting positive/negative of a total value, as an estimation value of sensor output value of the diagnosis object sensor; calculates an estimation difference which is a difference between a sensor output value of the diagnosis object sensor, and the estimation value of sensor output value of the diagnosis object sensor; and determines that abnormality occurred in the diagnosis object sensor, when the estimation difference is out of a determination range for estimation difference.