A swivelling angle is determined by means of an angle sensing device.

The objective of this angle detection device is to provide an angle detection device that can detect an angle of rotation at a higher level of precision.

An angle detecting device may be configured to detect the angle (a).

The steering angle sensing device comprises an angle sensor (7), and first and second angle inductors (6-1, 6-2).

Provided are: a rotational angle detection device which can be easily mounted to a bicycle; and a rotational angle detection method.

The objective of the present invention is to achieve an angle detection device capable of correcting an electrical angle frequency component of an angle signal included in the angle signal.

Provided is a rotation angle detection device capable of obtaining a high-precision detection result in a wide angle range.

This rotation angle detection device has a lever, a cylindrical section, a magnet, and a magnetic detection element.

The invention further relates to an angle determining device for performing the method according to the invention.

Provided is an angle-of-rotation detection device that can be removed easily from a crank.

Detection characteristics are not affected even if the rotation angle detection device is used in an environment where temperature changes rapidly.

The throttle valve device (1) is also provided with a pivot angle detection device (20) which detects the pivot angle of the valve body.

It is possible to provide an angle sensor and an angle detection device which have a high output and a high accuracy and can operate in a wide range of the operation temperature .

A rotation angle detection device for detecting the angle of rotation of a rotation body as a measurement target.

This provides the rotation angle detection device capable of recognizing the position of the mechanical angle while using a two-phase encoder output.