Kabushiki Kaisha Tokai Rika Denki Seisakusho

Yousuke Obata

Seiji Kondo

Katsuhide Kumagai

Osamu Inagaki

Mikihisa Araki

Shigeji Ito

Yasuhiko Futamura

Kanichi Tanaka

Toru Ueno

Norimasa Sengoku

Noboru Mizukami

A rotation angle detection apparatus for reducing power consumption. A magnetoresistance element generates first and second analog signals, which change cyclically and continuously each time a steering shaft is rotated by 60 degrees. A microcomputer determines the rotation angle of the steering shaft from the output value and number of cycles of the analog signals.

Apparatus for detecting the rotation angle of a rotational body

A motor drive control device, comprises: a switch which operates a motor; a motor which raises and lowers a door glass; a pulse signal generating device which synchronizes with the rotation of the motor and generates a pulse signal; and a determining device which, in a case in which there is a predetermined difference between this pulse signal and a normal pulse signal which is generated by synchronizing with the rotation of said motor, determines that the pulse signal generating device is failed. Therefore, in a case in which it is determined that the pulse signal generating device is failed and the switch is operated so that the motor raises the door glass, raising of the door glass can be stopped.

Motor drive control device

Growing community of inventors

Aichi, Japan

Yousuke Obata