Title:
SENSORLESS CLOSED-LOOP ANTI-SHAKE CONTROL ALGORITHM AND APPLICATION CIRCUIT THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/005283
Kind Code:
A1
Abstract:
Provided is a sensorless closed-loop anti-shake control algorithm. The algorithm comprises the following steps: 1, by means of a resistance calculation module, reading and driving all voltages Vk-1 and currents Ik-1 of a multi-axis anti-shake motor; 2, by means of step 1.1, calculating and outputting resistances Rk-1 of all coils in the multi-axis anti-shake motor; 3, by means of a back electromotive force calculation module, reading all the resistances, voltages and currents in steps 1 and 2 above, and calculating and outputting back electromotive forces Ek-1 of all the coils in the multi-axis anti-shake motor; 4, by means of a closed-loop anti-shake control module, reading an anti-shake compensation angle θk as well as the resistances and back electromotive forces of each coil, and calculating and outputting a closed-loop anti-shake control Fk; and 5, then waiting for a time step k=k+1, and repeating steps 1 to 4 above. A closed-loop control element is added to a sensorless motor to achieve an excellent anti-shake effect and reduce the risk of image blurring caused by resonance.
Inventors:
MAK LIN CHI (CN)
CHU YEE CHUNG (CN)
CHU YEE CHUNG (CN)
Application Number:
PCT/CN2022/088493
Publication Date:
February 02, 2023
Filing Date:
April 22, 2022
Export Citation:
Assignee:
VISTA INNOTECH LTD (CN)
International Classes:
H02P6/182; H02P6/06; H02P25/02; H02P25/034
Foreign References:
| CN113556064A | 2021-10-26 | |||
| US20180316296A1 | 2018-11-01 | |||
| US20190103829A1 | 2019-04-04 | |||
| CN106230341A | 2016-12-14 | |||
| CN108599645A | 2018-09-28 |
Attorney, Agent or Firm:
SHENZHEN QIANNA PATENT AGENCY LTD (CN)
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