Title:
DETERMINATION METHOD AND APPARATUS FOR BLDC COUNTER-ELECTROMOTIVE FORCE ZERO CROSSING POINT THRESHOLD, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/133113
Kind Code:
A1
Abstract:
A determination method and apparatus for a brushless direct current counter-electromotive force zero crossing point threshold and a storage medium, the method comprising: detecting counter-electromotive force zero crossing point time intervals of two adjacent sections of a brushless direct current electric motor to obtain at least two first time intervals (S101); utilizing the obtained at least two first time intervals to determine errors of a counter-electromotive force zero crossing point (S102); converging the determined errors of the counter-electromotive force zero crossing point to obtain a counter-electromotive force zero crossing point threshold correction increment (S103); and utilizing the obtained counter-electromotive force zero crossing point threshold correction increment to determine a counter-electromotive zero crossing point threshold.
Inventors:
YANG LEI (CN)
ZHU ZIQIANG (CN)
ZHU ZIQIANG (CN)
Application Number:
PCT/CN2018/124500
Publication Date:
July 02, 2020
Filing Date:
December 27, 2018
Export Citation:
Assignee:
GUANGDONG MIDEA WHITE HOME APPLIANCE TECH INNOVATION CENTER CO LTD (CN)
MIDEA GROUP CO LTD (CN)
MIDEA GROUP CO LTD (CN)
International Classes:
H02P6/182
Foreign References:
| CN105703670A | 2016-06-22 | |||
| CN103098366A | 2013-05-08 | |||
| US20110074327A1 | 2011-03-31 | |||
| CN107769635A | 2018-03-06 | |||
| CN107579684A | 2018-01-12 | |||
| CN107395072A | 2017-11-24 |
Other References:
See also references of EP 3886311A4
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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