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Grounding switch motor composition requirements and reliability

May 12, 2018

In the process of operating the earthing switch motor, semiconductor switching devices are mainly used to realize electronic commutation. In operation, electronic switching devices replace to some extent their conventional contact commutators and brushes, and when in use With high reliability and no commutation sparks, low mechanical noise, etc., are widely used in high-grade recording seats, video recorders, electronic equipment and automated office equipment.

The grounding switch motor is mainly composed of a multi-pole winding stator, a position sensor, a permanent magnet rotor and the like in the process of manufacturing. In operation, the position sensing changes according to the position of the rotor, and in a certain degree will follow a certain order. The stator winding current is commutated. The operating voltage of the stator winding is provided by an electronic switch circuit controlled by the position sensor output.

The position sensor of the grounding switch motor will have three types of photoelectric, electromagnetic, and magnetic sensitive to a certain extent. In the process of use, a brushless DC motor with a magnetic sensitive position sensor will be used, and its magnetic sensitive sensor parts, Mounted on the stator assembly to detect changes in the magnetic field generated by the permanent magnets and the rotor.

The grounding switch motor will effectively configure the photoelectric sensor parts on the stator assembly according to a certain position. When used, the rotor will be equipped with a shading plate, and the light source is a light emitting diode or a small light bulb. When the rotor rotates, due to the action of the shading plate, the photosensitive components on the stator will generate pulse signals intermittently at a certain frequency.

The earthing switch motor is mainly composed of synchronous motor and driver components during the production. When it is used, the frequency conversion speed regulating motor is mainly used. In operation, the brushless DC motor with variable voltage speed regulation is a real sense of brushless DC. The motor consists of a stator and a rotor. The stator consists of a core. The coil adopts a "swine-inverse-cis-inverse" winding, resulting in a fixed magnetic field of the NS group. The rotor consists of a cylindrical magnet (middle axis), or The electromagnets are assembled with a collector ring. The brushless DC motor can generate torque.