Title:
電磁アクチュエータを有している低温クーラーまたは他のシステムにおける逆起電力（ＥＭＦ）ポジション検出のための方法および装置
Document Type and Number:
Japanese Patent JP6516844
Kind Code:
B2
Abstract:
A method includes driving a component in an electromagnetic actuator back and forth during one or more cycles of the actuator, where the actuator includes a voice coil. The method also includes identifying a back electromotive force (EMF) voltage of the voice coil during at least one of the one or more cycles. The method further includes determining whether a stroke of the component is substantially centered using the back EMF voltage of the voice coil. In addition, the method includes, based on the determination, adjusting one or more drive signals for the voice coil during one or more additional cycles of the actuator. Determining whether the stroke of the component is centered could include determining whether the back EMF voltage of the voice coil is substantially maximized or determining whether times between extremes in the back EMF voltage are substantially equal.
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Inventors:
Conrad, Theodore Jay.
Brookman, Dawson Earl.
Brookman, Dawson Earl.
Application Number:
JP2017528923A
Publication Date:
May 22, 2019
Filing Date:
October 05, 2015
Export Citation:
Assignee:
RAYTHEON COMPANY
International Classes:
H02P25/034
Domestic Patent References:
| JP2000134903A | ||||
| JP2000145632A | ||||
| JP2012090467A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki