Title:
ZERO-POSITION LEARNING METHOD AND APPARATUS FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/246957
Kind Code:
A2
Abstract:
The embodiments of the present invention relate to the technical field of electric motor testing. Disclosed are a zero-position learning method for an electric motor. The method comprises: sending a zero-position learning instruction to an electric motor to be calibrated, so as to start electric motor zero-position learning; performing instruction parsing on the zero-position learning, so as to determine an adjustment signal for said electric motor, and at said electric motor and on the basis of the angle adjustment signal, controlling a rotor magnetic pole of said electric motor to rotate to a first adjustment position; at said electric motor and according to an initial calibration signal, controlling a rotor magnet to rotate from the first adjustment position to a second adjustment position; when said electric motor rotates by a set value of electrical angle cycles, determining whether said electric motor rotates by the same number of mechanical angle cycles, and if so, controlling an electric motor rotor to perform a return operation until the electric motor rotor returns by a set value of mechanical angle cycles; and acquiring an angle learning value of the electric motor rotor, which has completed the return operation, and determining a final learning value. In this way, the accurate zero-position calibration can be realized even when there is a large load.
Inventors:
HUI ZHIFENG (CN)
ZHANG ZIMO (CN)
WANG XUYANG (CN)
LIU ZHUANG (CN)
WANG WEIXU (CN)
WANG TAO (CN)
SU GANTING (CN)
ZHANG ZIMO (CN)
WANG XUYANG (CN)
LIU ZHUANG (CN)
WANG WEIXU (CN)
WANG TAO (CN)
SU GANTING (CN)
Application Number:
PCT/CN2023/120668
Publication Date:
December 28, 2023
Filing Date:
September 22, 2023
Export Citation:
Assignee:
SUZHOU LEEKR TECH CO LTD (CN)
International Classes:
H02P23/14
Attorney, Agent or Firm:
SINO-CREATIVITY INTELLECTUAL PROPERTY LAW FIRM (CN)
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