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. 13, 2012
Filed:
Apr. 17, 2008
Hiroshi Nishizawa, Tokyo, JP;
Hajime Nakajima, Tokyo, JP;
Takeshi Musha, Tokyo, JP;
Yoichi Ohmura, Tokyo, JP;
Hiroshi Nishizawa, Tokyo, JP;
Hajime Nakajima, Tokyo, JP;
Takeshi Musha, Tokyo, JP;
Yoichi Ohmura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays () constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)λ, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line () passing through a barycenric position () of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum ().