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:
Dec. 05, 2006
Filed:
Jun. 29, 2005
Toshiaki Uda, Nisikamo-gun, JP;
Tsuyoshi Kanda, Obu, JP;
Taisuke Murata, Obu, JP;
Hiroshi Nakamura, Nishio, JP;
Toshiaki Uda, Nisikamo-gun, JP;
Tsuyoshi Kanda, Obu, JP;
Taisuke Murata, Obu, JP;
Hiroshi Nakamura, Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
The throttle position corresponding to the rotational angle of the throttle valve is calculated based on electric signals output from a rotor position detector constituted by three Hall ICs that detect the rotational position of a magnet rotor of a brushless DC motor. A valve position control quantity of the throttle valve is so calculated as to eliminate the difference between the thus calculated valve position and a target valve position. The motor current control quantity of the brushless DC motor is so determined as to eliminate the difference between the calculated valve position and the target valve position. Though the throttle position sensor is omitted, the electric signals output from the rotor position detector are used for calculating both the valve position control quantity and the motor current control quantity.