Power-on self-repairing method for brushless direct-current motor hall sensor

A Hall sensor, brushed DC motor technology, applied in the direction of motor control, electrical components, control systems, etc., can solve the problems of reduced system stability, little practical significance, complicated programs, etc., to achieve enhanced stability and safety, Guaranteed normal operation and strong scalability
CN104167979AActive Publication Date: 2014-11-26NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2014-11-26

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Abstract

The invention relates to a power-on self-repairing method for a brushless direct-current motor hall sensor. The hall sensor is detected in real time, and change-over is carried out in a signal estimating mode during a fault determining period, so that influences of a detection process on performance of a motor are emitted after faults occur. After the faults are detected and determined, a fault operation mode is switched, and the problem that system faults are caused due to the fact that the hall sensor is suddenly damaged in the operation process of a brushless direct-current motor is eliminated. Meanwhile, signals of the damaged hall sensor are repaired as much as possible through undamaged hall sensors to guarantee that the motor normally runs under sudden failure, and stability and safety of a system are enhanced. By means of the method, fault detection, judgment and repairing of the hall sensor in the running process of the motor can be achieved, and the problem that the system faults are caused due to the fact that the hall sensor is suddenly damaged in the operation process of the brushless direct-current motor is solved.
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Description

technical field

[0001] The invention belongs to the technical field of motor control, and relates to a motor fault repairing device, in particular to a power-on self-repairing method for a Hall sensor of a brushless DC motor. Background technique

[0002] Brushless DC motor is a new type of integrated motor produced with the development of modern power electronics technology. It has the advantages of simple structure, good speed regulation performance, high work efficiency, and low operating noise. The brushless DC motor is mainly composed of three parts: the motor body, the rotor position detection circuit, the electronic switch circuit and its control circuit. figure 1 Shown is the schematic diagram of the most commonly used three-phase full-control operation circuit.

[0003] The rotor position detection circuit and the electronic switch circuit cooperate to complete the commutation action, which is equivalent to the brush and commutator in the brushed DC motor, and is a...

Claims

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