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1. (WO2018198928) MOTOR CONTROL APPARATUS AND POWER TOOL

Pub. No.:    WO/2018/198928    International Application No.:    PCT/JP2018/016133
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 20 01:59:59 CEST 2018
IPC: H02P 25/04
B25F 5/00
H02P 27/16
B24B 23/06
Applicants: NITTO KOHKI CO., LTD.
日東工器株式会社
Inventors: ENDO, Daisuke
遠藤 大輔
SHIMIZU, Hiroyuki
清水 裕之
MIYAGI, Takanori
宮城 貴則
Title: MOTOR CONTROL APPARATUS AND POWER TOOL
Abstract:
A motor control apparatus 32 has: an on/off switch 22; a main control unit 36; a motor control circuit 38; an operating voltage generation circuit 40; a SW/AC monitoring unit 46; and an operating voltage monitoring unit 48. The SW/AC monitoring unit 46 monitors the state of the on/off switch SW or the state of a power supply line 35 between the on/off switch SW and a motor 30. The operating voltage monitoring unit 48 monitors the voltage level of an operating voltage Vcc outputted from the operating voltage generation circuit 40. The main control unit 36 controls activation or stopping of the motor 30 by double-checking a SW/AC monitor signal MS from the SW/AC monitoring unit 46 and an operating voltage monitor signal MV from the operating voltage monitoring unit 48.