Title:
SINGLE-PHASE DIRECT-CURRENT BRUSHLESS MOTOR AND CONTROL APPARATUS AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/137156
Kind Code:
A1
Abstract:
A single-phase direct-current brushless motor and a control apparatus and control method therefor. The body (100) of the motor comprises a rotor (110) and a stator (120). The control apparatus (200) comprises: a first position detecting device (210), used for detecting a position of the rotor (110) and outputting a rotor position signal; a predetermined angle detecting device (220), used for detecting whether the rotor (110) is rotated forward with respect to the first position detecting device (210) by a predetermined angle, and outputting a detection signal; a commutation circuit device (230), used for switching the power-on phase sequence of a coil winding; and a control device (240). The control device (240) is configured to control the commutation circuit device (230) to forward rotate the rotor (110) according to the rotor position signal upon receiving a reverse start instruction; and is configured to control the commutation circuit device (230) to cause the rotor (110) to rotate in a reverse direction when the detection signal indicates that the rotor (110) has rotated forward by the predetermined angle.
Inventors:
WU JIAN (CN)
Application Number:
PCT/CN2018/121420
Publication Date:
July 18, 2019
Filing Date:
December 17, 2018
Export Citation:
Assignee:
BOSCH POWER TOOLS CHINA CO LTD (CN)
International Classes:
H02P6/22
Domestic Patent References:
| WO2017077574A1 | 2017-05-11 |
Foreign References:
| CN101635549A | 2010-01-27 | |||
| CN102412771A | 2012-04-11 | |||
| CN103563239A | 2014-02-05 | |||
| CN201215936Y | 2009-04-01 |
Other References:
See also references of EP 3739745A4
Attorney, Agent or Firm:
NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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