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:
Mar. 31, 2026
Filed:
Mar. 04, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Mitsuhiro Iwasaki, Hitachinaka, JP;
Masahiro Doi, Hitachinaka, JP;
Takeo Yamashita, Hitachinaka, JP;
Shinichirou Hida, Hitachinaka, JP;
Yoshiaki Mizuhashi, Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
To provide a highly reliable electronic control device in which an excitation amplifier that outputs an excitation signal to a resolver, a microcomputer, and a power supply IC are mounted, the electronic control device being capable of performing abnormality diagnosis of the excitation amplifier before activation and during operation of a system. An electronic control device includes a power supply IC; a microcomputer to which a power supply voltage is supplied from the power supply IC; an excitation amplifier that excites the resolver; and a diagnostic circuit that monitors an input signal and an output signal of the excitation amplifier and diagnoses abnormality; where the diagnostic circuit compares the input signal with the output signal to perform abnormality diagnosis of the excitation amplifier, and transmits a diagnosis result to the microcomputer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile