Brushless motor with built-in Hall sensor
A hall sensor, brushless motor technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of motor torque coefficient fluctuation, commutation offset, angle offset, etc., to achieve stable and reliable position, improve reliability The effect of sex, convenient offline operation
Inactive Publication Date: 2014-10-08
BEIJING INST OF AEROSPACE CONTROL DEVICES
View PDF7 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since there is an angular position relationship between the sensor and the motor stator winding, this installation method requires a separate adjustment of the Hall sensor, and there may be an angular offset after the installation is completed, which is likely to cause a commutation offset, resulting in a torque coefficient of the motor There are large fluctuations
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] Such as figure 1 As shown, a brushless motor with a built-in Hall sensor of the present invention is composed of a stator and a rotor.
[0030] The stator includes a stator housing 1, a stator core 2, a Hall sensor 3, a stator coil 4 and a stator frame 5, and the rotor includes a permanent magnet 6, a rotor core 7 and a rotor bushing 8;
[0031] Both the stator shell 1 and the stator core 2 are ring structures, and the stator core 2 is installed in the stator shell 1 with interference;
[0032] The stator frame 5 is a ring structure with tooth grooves on the outer side of the circumference. The end face of the stator frame 5 is provided with a groove along the axis. The Hall sensor 3 is installed in the groove on the end face of the stator frame 5. The stator coil 4 is wound on the stator frame. 5. In the groove on the outer s...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A brushless motor with a built-in Hall sensor is characterized by being composed of a stator and a rotator, an air gap exists between the stator and the rotor, the stator is composed of a stator shell, a stator iron core, a stator coil, a stator framework and the Hall sensor, the Hall sensor is fixed to the stator framework, the stator coil is wound on the stator framework, and the rotor is composed of a rotor iron core, a rotor lining and a permanent magnet. The Hall sensor is internally arranged in the stator, the relative positions of the stator coil and the Hall sensor can be fixed through the glue potting and curing process, and therefore the problem of brushless motor phase commutation deviation caused by position offset of the sensor is avoided, and meanwhile the step of installing and regulating an external Hall sensor is omitted, so that reliability and use convenience of the brushless motor are remarkably improved.
Description
technical field [0001] The invention relates to a brushless motor with a built-in Hall sensor, which can be used for high and low speed brushless motors and is suitable for various motor drive fields. Background technique [0002] Because brushless motors omit the brush transmission device of traditional DC motors, electronic commutation replaces mechanical commutation, so that there is no mechanical contact between the stator and rotor, and it has significant advantages in terms of reliability and long life. [0003] Electronic commutation can adopt a non-position sensor solution, and use the back electromotive force method to obtain the rotor position, but this method is difficult to achieve in low-speed situations. [0004] At present, the brushless motors that are widely used use Hall sensors for phase commutation, which has the advantages of simple circuit and simple algorithm. However, the motor position sensor in the prior art is generally separated from the motor bo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08H02K11/00
Inventor 李建春常亚辉王晓瑜王莎莎
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES