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1. (WO2018198749) ELECTRICALLY DRIVEN ACTUATOR

Pub. No.:    WO/2018/198749    International Application No.:    PCT/JP2018/015008
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 11 01:59:59 CEST 2018
IPC: H02K 7/116
F02D 9/00
F02D 9/02
G01B 7/30
H02K 11/215
Applicants: NTN CORPORATION
NTN株式会社
Inventors: KITAYAMA Naotsugu
北山 直嗣
MATSUTO Takushi
松任 卓志
Title: ELECTRICALLY DRIVEN ACTUATOR
Abstract:
Provided is an electrically driven actuator comprising: a motor section 7 for rotationally driving a rotating operating shaft 3 through a speed reducer 8; and a rotational angle detection device 30 for detecting the rotational angle of the motor section 7. The rotational angle detection device 30 is configured to detect the magnetic fluxes of magnets 31, 32 which are magnetized with different magnetic poles, that is, S and N poles, in the rotational direction of the motor section 7, and which rotate with the output shaft 12 of the motor section 7. The reduction ratio of the speed reducer 8 is set to be smaller than 360º/θº, where θº represents the movable range of the rotating operating shaft 3.