Title:
BRUSHLESS DC MOTOR ANGLE MEASUREMENT AND SPEED MEASUREMENT APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/200659
Kind Code:
A1
Abstract:
Provided is a brushless DC motor angle measurement and speed measurement apparatus; a linear Hall element (8) is used to obtain an initial angle value of a rotor; a switching Hall element (9) is used to obtain high and low level signals; a position detection module calculates a rotor angle according to the angle value and the high and low levels; a sector determination module distinguishes which sector the rotor is located in; a speed measurement module calculates the rotational speed. The cost of position sensors is effectively reduced, and at the same time, high-precision angle measurement, sector determination, and high-precision speed measurement functions are realized. Also provided is a brushless DC motor angle measurement method.
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Inventors:
HUA WEI (CN)
WANG YUCHEN (CN)
LIU KAI (CN)
WANG YUCHEN (CN)
LIU KAI (CN)
Application Number:
PCT/CN2018/088050
Publication Date:
October 24, 2019
Filing Date:
May 23, 2018
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
H02P6/17
Foreign References:
| CN1293484A | 2001-05-02 | |||
| CN1293484A | 2001-05-02 | |||
| CN103001561A | 2013-03-27 | |||
| CN103222167A | 2013-07-24 | |||
| CN103222167A | 2013-07-24 | |||
| CN107070319A | 2017-08-18 | |||
| CN103944317A | 2014-07-23 | |||
| CN103731077A | 2014-04-16 | |||
| DE10210372A1 | 2003-09-25 | |||
| US20150048768A1 | 2015-02-19 |
Attorney, Agent or Firm:
NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (CN)
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