Title:
MOTOR CLOSED-LOOP DETECTION CIRCUIT AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/078126
Kind Code:
A1
Abstract:
The present invention provides a motor closed-loop detection circuit and method. The motor closed-loop detection circuit comprises: a motor open-loop path, configured to provide an open-loop angle increment and calculate an open-loop angle; a motor estimation path, configured to estimate an angle increment of a motor to obtain an estimated angle increment, and calculate same to obtain an estimated angle; and a closed-loop detection module, configured to output a first closed-loop marker signal when the open-loop angle increment is continuously equal to the estimated angle increment for n times within one electric cycle range, and feed back the first closed-loop marker signal to the motor open-loop path so as to adjust the open-loop angle increment; and to compare an updated open-loop angle with the estimated angle, and output a second closed-loop marker signal when the updated open-loop angle is equal to the estimated angle. The present invention is implemented using a hardware circuit, and existing motor paths are multiplexed; the structure is simple, the costs are low, CPU resources are not occupied, and the operation power consumption of the motor is low. The calculation of the modules multiplexes devices in a calculation unit library, so that the costs are reduced. The closed-loop detection method is simple, fast, and easily implemented; a same set of closed-loop detection circuit is used to implement two stages of closed-loop functions, so that the area consumption is extremely low.
Inventors:
HUA CHUN (CN)
ZHAO XUDONG (CN)
XIE XINGHUA (CN)
ZHAO XUDONG (CN)
XIE XINGHUA (CN)
Application Number:
PCT/CN2023/113290
Publication Date:
April 18, 2024
Filing Date:
August 16, 2023
Export Citation:
Assignee:
CRM ICBG WUXI CO LTD (CN)
International Classes:
H02P21/22; H02P6/20; H02P21/34
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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