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Motor with residual magnetization detection revolution/angle sensor and method for measuring revolution/angle thereof

A technology of rotation angle sensor and detection sensor, which is applied in the direction of speed/acceleration/shock measurement, linear/angular velocity measurement, measuring device, etc. It can solve the problems of low detection accuracy and large volume, and achieve small volume, high precision and low cost. Effect

Active Publication Date: 2015-01-28
广东戈兰玛汽车系统有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the tasks of the present invention is to solve the problems of existing motors with large volume after being equipped with an external speed sensor and low detection accuracy after a built-in speed sensor, so as to provide a speed / angle sensor with residual magnetism detection that can overcome the above defects the motor

Method used

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  • Motor with residual magnetization detection revolution/angle sensor and method for measuring revolution/angle thereof
  • Motor with residual magnetization detection revolution/angle sensor and method for measuring revolution/angle thereof
  • Motor with residual magnetization detection revolution/angle sensor and method for measuring revolution/angle thereof

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Embodiment Construction

[0034] A motor equipped with a residual magnetism detection speed / angle sensor, including a motor housing (not shown in the figure), a stator 1 and a rotor 2, the stator is fixed on the inner cylindrical surface of the housing, and the rotor gap 13 is coaxial Set in the inner cylindrical surface of the stator, the stator 1 includes two pairs of permanent magnets or electromagnets 3 evenly distributed on the inner cylindrical surface of the housing, the rotor 2 includes the rotor core 4 and the rotor winding coil 5, and the outer cylindrical surface of the rotor core There are slots 6 and slot teeth 7 formed by slot intervals evenly distributed on the top, and rotor winding coils 5 are embedded in the slots 7 . A residual magnetism detection sensor 8 is provided between two adjacent electromagnetic pole pieces 16 of the stator, and the sensing surface of the residual magnetism detection sensor 8 faces the rotor 2 .

[0035] The residual magnetism detection sensor 8 is specif...

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Abstract

The invention discloses a motor with a residual magnetization detection revolution / angle sensor and a method for measuring revolution / angle thereof. In the motor, the residual magnetization detection revolution / angle sensor is embedded between one pair of adjacent electrical pole shoes, the motor is characterized in that the gap between the pole shoes is utilized, a small-size Hall element is also served as a magnetic flux sensor, besides, and the cycle rule variation characteristics of a residual magnetization flux curve and the corresponding numerical relationship among the angle, the revolution and the slotted tooth are also adopted, through calculation, the revolution or the angle can be precisely measured when the motor has the advantages of the small size and the low cost.

Description

[0001] technical field [0002] The invention relates to the technical field of motors, including motors and generators, especially the above-mentioned motor with a speed / rotation angle detection device. Background technique [0003] Since the invention of motors by humans, motors have been used more and more widely. Various generators and motors are used in various occasions of human activities. In many applications, it is necessary to know the rotational speed or angular position of the motor. In many occasions, there are still high requirements for the measurement accuracy of this rotation speed, and even the relative position of the rotor of the motor must be known. A common practice is to add a speed sensor to detect the rotational speed of the motor. Such as photoelectric digital coding system, VR, MR, Hall pulse device, etc. However, these transpositions or sensors are relatively large, especially difficult to fit into a small motor, so they are often installed ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00G01B7/30G01P3/481H02K11/215
Inventor 刘贻樟刘平
Owner 广东戈兰玛汽车系统有限公司
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