Tamagawa Seiki Kabushiki Kaisha

Tamagawa Seiki Co., Ltd.

Masahito Okada

Hisashi Mimura

Kanji Kitazawa

Yoshimi Kikuchi

Yonezo Kubota

An angle detection system of the present invention includes: a statorwhich includes a plurality of salient pole portions which are formed on a flat sheet made of a magnetic material and are raised by bending, each salient pole portion constituting a winding magnetic core on which a winding member for excitation and a winding member for detection are mounted; and a rotorwhich is made of a magnetic material and is configured to be rotatable relative to the stator such that gap permeance between the rotor and each salient pole portion is changed due to the rotation thereof about a rotational axis thereof. According to the angle detection device of the present invention, it is possible to provide the angle detection device which can largely reduce the number of parts and can realize the reduction of cost and the enhancement of reliability.

Angle detection system and method of manufacturing the same

An angle detector including an annular stator board (); a plurality of stators () provided on the annular stator board () independently of one another and forming slots () at constant or various intervals; a magnetic core () formed on surfaces of the stators (); stator windings () formed around the magnetic cores () and composed of excitation windings () and output windings (); a magnetic flux return path plateau () provided on each of the surfaces of the stators () and provided inward or outward of the stator windings (); an annular rotor board () provided on the magnetic flux return path plateaus (); and a gap forming board () provided on an inner surface () of the annular rotor board () and having a board inner surface () whose protrusion state changes according to a waveform. The annular rotor board rotates to cause changes in a gap () between each of the magnetic cores () and the board inner surface () of the gap forming board ().

Growing community of inventors

Nagano, Japan

Masahito Okada