Magnetic ring encoder structure of brushless motor and brushless motor

A brushless motor and encoder technology, used in structural connections, electrical components, electromechanical devices, etc., can solve the problems of low detection accuracy and difficult control requirements, and achieve the effect of ensuring accurate measurement.

Pending Publication Date: 2021-07-23
浙江仕优驱动科技有限公司
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  • Abstract
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Problems solved by technology

[0002] Traditional brushless motors basically use three switch Hall sensors to detect the rotor angle of the motor, but the detection accuracy is not high. This type of sensor can meet the requirements for general control occasions, but for some applications that require low speed and small torque fluctuations Occasions, such as the application of motors for electric wheelchairs, the control is difficult to meet the requirements

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  • Magnetic ring encoder structure of brushless motor and brushless motor
  • Magnetic ring encoder structure of brushless motor and brushless motor
  • Magnetic ring encoder structure of brushless motor and brushless motor

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Embodiment Construction

[0037] The technical solutions of the embodiments of the present invention will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0038] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientations or positional relationships indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing t...

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Abstract

The invention discloses a magnetic ring encoder structure of a brushless motor and the brushless motor, belongs to the field of brushless motors, and aims to improve the detection precision of the angle change of a motor rotor and enhance the low-speed performance of the motor, The magnetic ring encoder structure of the brushless motor comprises a magnetic ring and linear Hall sensors, wherein the magnetic ring is mounted on a rotor shaft in the brushless motor, and at least two linear Hall sensors are arranged and used for sensing the magnetic field change of the magnetic ring. The magnetic ring has a stable magnetic field, the linear Hall sensors can sense the change of the magnetic field to generate signal waves, a computer algorithm can calculate the rotating speed of the rotor shaft according to the numerical values of the signal waves generated by the plurality of linear Hall sensors so as to control the rotating speed of the motor, and the control performance is good.

Description

【Technical field】 [0001] The invention relates to the field of brushless motors, in particular to a magnetic ring encoder structure of the brushless motor and the brushless motor. 【Background technique】 [0002] Traditional brushless motors basically use three switch Hall sensors to detect the rotor angle of the motor, but the detection accuracy is not high. This type of sensor can meet the requirements for general control occasions, but for some applications that require low speed and small torque fluctuations Occasions, such as the application of motors for electric wheelchairs, the control is difficult to meet the requirements. 【Content of invention】 [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a magnetic ring encoder structure for the brushless motor, improve the detection accuracy of the motor rotor angle change, and enhance the low-speed performance of the motor. [0004] In order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/215H02K29/08
CPCH02K11/215H02K29/08
Inventor 金若英闫明清励国旦
Owner 浙江仕优驱动科技有限公司
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