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Title:
METHOD FOR IMPLEMENTING BRUSHLESS DIRECT CURRENT MOTOR HALL POSITION SENSOR FAULT PROCESSING
Document Type and Number:
WIPO Patent Application WO/2022/142232
Kind Code:
A1
Abstract:
A method for implementing brushless direct current motor Hall position sensor fault processing, comprising: detecting a Hall signal by using an edge detection means, and recording the number of edge jumps; determining whether the absolute value of the difference between a position change of a rotor represented by a Hall and an angle value calculated inside of an MCU is within a preset error range, if so, then updating the angle value inside of the MCU as an angle represented by a rotor position as detected by the Hall, otherwise, incrementing the angle value inside of the MCU according to an angle increment calculated from the rotational speed of a motor; and obtaining an acceptable range according to a last raw angle increment value. A method for implementing brushless direct current motor Hall position sensor fault processing is employed, and an internal degree recording angle is designed. Compared with a means of using a timer alone, in which the size of the count is different when the speed is fast and slow and the position of a motor rotor cannot be intuitively understood, the motor is commutated according to a degree angle value, and the current position of the motor may thus be clearly understood.

Inventors:
WANG SANG (CN)
ZHAO XUDONG (CN)
ZHANG ZHENGRUI (CN)
Application Number:
PCT/CN2021/104247
Publication Date:
July 07, 2022
Filing Date:
July 02, 2021
Export Citation:
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Assignee:
CRM ICBG WUXI CO LTD (CN)
International Classes:
H02P6/12; H02P6/16
Foreign References:
CN108322106A2018-07-24
CN103472263A2013-12-25
US20200186060A12020-06-11
CN111817616A2020-10-23
CN109905058A2019-06-18
EP3644495A12020-04-29
Attorney, Agent or Firm:
SHANGHAI ZHI XIN PATENT AGENT LTD. (CN)
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