Title:
CONTROL METHOD AND APPARATUS FOR DIRECT-CURRENT MOTOR, AND MOTOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/267483
Kind Code:
A1
Abstract:
A control method for a direct-current motor, comprising: determining a target rotating speed of a direct-current motor (S101); when the target rotating speed is greater than a maximum rotating speed of the direct-current motor capable of being directly started, determining a target duty ratio corresponding to the target rotating speed according to a correspondence between the rotating speed of the direct-current motor and a duty ratio of a pulse width modulation signal (S102); starting the direct-current motor, enabling the rotating speed of the direct-current motor to reach the maximum rotating speed of the direct-current motor capable of being directly started, and according to a correspondence between the duty ratio of the pulse width modulation signal and the working time of the direct-current motor, adjusting the duty ratio of the pulse width modulation signal in real time (S103); and when the duty ratio of the obtained current pulse width modulation signal is adjusted to be equal to the target duty ratio, maintaining the current pulse width modulation signal, so that the rotating speed of the direct-current motor reaches the target rotating speed (S104).
Inventors:
DUAN ZEPENG (CN)
CHEN HUAN (CN)
HU WEI (CN)
JU HUANWEN (CN)
WANG PANFEI (CN)
SONG SHUFEI (CN)
CHEN HUAN (CN)
HU WEI (CN)
JU HUANWEN (CN)
WANG PANFEI (CN)
SONG SHUFEI (CN)
Application Number:
PCT/CN2022/075251
Publication Date:
December 29, 2022
Filing Date:
January 30, 2022
Export Citation:
Assignee:
QINGDAO HAIER BIOMEDICAL TECH CO LTD (CN)
QINGDAO HAIER BIOMEDICAL CO LTD (CN)
QINGDAO HAIER BIOMEDICAL CO LTD (CN)
International Classes:
H02P7/29
Foreign References:
| CN113395024A | 2021-09-14 | |||
| CN1875539A | 2006-12-06 | |||
| CN111682811A | 2020-09-18 | |||
| CN110165949A | 2019-08-23 | |||
| CN108964538A | 2018-12-07 | |||
| CN101372095A | 2009-02-25 | |||
| JPH0965675A | 1997-03-07 |
Attorney, Agent or Firm:
QINGDAO ZHONGJIA STANDARD PATENT AGENCY CO., LTD (CN)
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