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:
Sep. 29, 2020
Filed:
Jun. 09, 2017
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Hiroshi Hirayama, Hitachinaka, JP;
Yoshitaka Abe, Hitachinaka, JP;
Tomonobu Koseki, Hitachinaka, JP;
Mitsuhiko Watanabe, Hitachinaka, JP;
Atsushi Arata, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
Provided is a drive control device for an electric motor in which the number of terminals and the number of wires can be reduced. The drive control device includes: an inverter circuit that drives an electric motor having a plurality of phases; a drive circuit including drivers; a control circuit that outputs a control signal to control the drive circuit; and a signal line that connects the control circuit to the drive circuit to transmits a control signal from the control circuit to the drive circuit, in which the number of signal lines is fewer than the number of the phases of the electric motor.