Title:
ELECTROMAGNETIC ACTUATOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/208017
Kind Code:
A1
Abstract:
Conventionally, accurate zero-cross position drive control is not achieved due to overlapping noise in reverse electromotive force signals detected by electromagnetic actuator drive devices in order to perform a control. Thus, this electromagnetic actuator drive device generates an AC waveform signal V1 produced from an AC waveform constituting a one-period section of an electromotive force signal, and a reference signal V2 obtained by adding an arbitrary and different phase shift amount for each period to the AC waveform signal having a frequency identical to that of the waveform signal V1. The phase alignment of the drive pulse is adjusted using phase information obtained from a correlation operation of these signals V1, V2.
Inventors:
KATO SHINGO (JP)
Application Number:
PCT/JP2015/068265
Publication Date:
December 29, 2016
Filing Date:
June 24, 2015
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
H02P25/06; G02B26/10
Foreign References:
| JP4065502B2 | 2008-03-26 | |||
| JP5036175B2 | 2012-09-26 | |||
| JP2010233415A | 2010-10-14 |
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
Masatoshi Kurata (JP)
Masatoshi Kurata (JP)
Download PDF: