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1. (WO2017154784) ELECTROMAGNETICALLY MOVING DEVICE

Pub. No.:    WO/2017/154784    International Application No.:    PCT/JP2017/008543
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: H01F 7/16
H01F 7/06
H01F 7/18
H01H 33/00
H01H 33/38
H01H 33/666
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: TAKASUKA Tomoko
▲高▼須加 智子
MORI Mitsugi
森 貢
TSUKIMA Mitsuru
月間 満
Title: ELECTROMAGNETICALLY MOVING DEVICE
Abstract:
In this electromagnetically moving device 100, magnetic flux variation measurement means 3 is disposed outside of a closed magnetic path created when a moving iron core 6 and a stationary iron core 5 are in a coupled state through the permanent magnet 7, and at a position allowing the variation in a leakage flux caused by the shifting of the moving iron core 6 to be measured. From the measurement of time-series data for the magnetic flux variation, the time at the inflexion point is calculated, thereby estimating the behavior of a moving part such as a switch.