Title:
DEVICE FOR DETECTING ROTATION ANGLE AND DEVICE FOR CONTROLLING AC ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/216149
Kind Code:
A1
Abstract:
The present invention is provided with: a rotation angle sensor; an input circuit which outputs a rotation angle signal and an abnormal signal; a calculation processing unit which, at a preset calculation timing and on the basis of a detection value of rotation angle, calculates a calculation value of rotation angle and a calculation value of rotation speed; and a rotation angle estimation processing unit which, on the basis of the calculation value of rotation angle and the calculation value of rotation speed, computes an estimation value of rotation angle after the calculation timing, wherein, when the abnormal signal is received, the calculation processing unit calculates the calculation value of rotation angle and the calculation value of rotation speed on the basis of the estimation value of rotation angle instead of the detection value of rotation angle.
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Inventors:
KAMIZAWA HAYATO (JP)
MORITA KIYOHIRO (JP)
FUJIWARA MICHITAKA (JP)
MORITA KIYOHIRO (JP)
FUJIWARA MICHITAKA (JP)
Application Number:
PCT/JP2017/019412
Publication Date:
November 29, 2018
Filing Date:
May 24, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P6/16; H02P29/024
Foreign References:
| JP2015181345A | 2015-10-15 | |||
| JP2016073157A | 2016-05-09 | |||
| JP2014195352A | 2014-10-09 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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