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:
Oct. 16, 1990
Filed:
Jun. 14, 1989
Applicant:
Inventors:
Yasuya Kajiwara, Hyogo, JP;
Keiu Kawasaki, Giju, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
318254 ; 318439 ; 123399 ;
Abstract
There is provided an apparatus for controlling a throttle actuator which detects the magnetic pole position of a rotor of a brushless motor connected to a throttle valve and drives the brushless motor in response to the detected magnetic pole position detecting signal. The apparatus is arranged to detect any fault in the magnetic pole position detecting signal and steppingly drive the brushless motor independently of the magnetic pole position detecting signal when a fault is detected.