Double-stator magnetic resistance type angle sensor

A reluctance type, double stator technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, magnetic circuit static parts, etc., can solve the problems of complex motor system, difficult and complicated design, manufacture, installation and maintenance, etc. , to achieve the effect of simplifying the control system, simple winding type, and simple manufacturing

Inactive Publication Date: 2015-06-24
JIANGMEN POLYTECHNIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the double-stator brushless DC motor, the internal structure itself is very complicated. If two angle sensors need to be installed, the entire motor system will be more complicated, which will bring great difficulties to design, manufacture, installation and maintenance.

Method used

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  • Double-stator magnetic resistance type angle sensor

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Embodiment Construction

[0017] Such as figure 1 The shown dual-stator reluctance angle sensor includes an inner stator 2, a rotor and an outer stator 8, a first sinusoidal air gap 3 is arranged between the inner stator 2 and the rotor, and a second sinusoidal air gap is arranged between the outer stator 8 and the rotor. Sinusoidal air gap7. The rotor includes a magnetic isolation ring 5 , an inner rotor part 4 arranged on the inner wall of the magnetic isolation ring 5 , and an outer rotor part 6 arranged on the outer wall of the magnetic isolation ring 5 . The main function of the magnetic isolation ring 5 is to separate the magnetic fields generated by the first excitation winding 17 and the second excitation winding 12 to avoid the mutual influence of the two, so as to improve the detection accuracy of the double-stator reluctance angle sensor of the present invention. Both sides of the magnetic isolation ring 5 are provided with grooves that limit the relative rotation of the inner rotor part 4 ...

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Abstract

The invention discloses a double-stator magnetic resistance type angle sensor which comprises an inner stator and a rotor. A first sine air gap is formed between the inner stator and the rotor. The double-stator magnetic resistance type angle sensor further comprises an outer stator outside the rotor. A second sine air gap is formed between the outer stator and the rotor. The rotor comprises a magnetism isolating ring, an inner rotor portion arranged on the inner wall of the magnetism isolating ring and an outer rotor portion arranged on the outer wall of the magnetism isolating ring. Through the combination of an inner stator and rotor assembly and an outer stator and rotor assembly are arranged, the double-stator magnetic resistance type angle sensor is particularly suitable for a double-stator servo drive motor system, the system structure can be greatly simplified, the effective space of the motor is increased, and the double-stator magnetic resistance type angle sensor has the advantages of being simple in structure, high in reliability and the like. By changing the number of teeth of the rotor, the inner stator and the outer stator, the angle sensor with 1-8 pole pairs can be obtained, and the double-stator magnetic resistance type angle sensor is suitable for the servo motor system with different numbers of pole pairs, and has the advantages of being convenient to install and suitable for batch processing production.

Description

technical field [0001] The invention relates to a magnetoresistive angle sensor, in particular to a double-stator magnetoresistance angle sensor. Background technique [0002] Since the double-stator motor can make full use of the internal space of the motor, compared with the traditional single-stator and rotor motor, it can greatly reduce the actual size and weight of the motor, and not only greatly improve the power density and torque density of the motor , Reduce the cost, and the internal and external motors have independent stator windings, which can be operated in series or independently. By reasonably switching the connection mode of the internal and external stator windings, the motor can well meet the low-speed high-torque and high-speed small Torque performance requirements. It has been widely used in the field of hybrid power system, wind power generation system and high thrust, high reliability drive system. For the double-stator brushless DC motor, the intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/04H02K1/18H02K1/22
CPCH02K24/00H02K1/14H02K1/24H02K16/04H02K2201/03
Inventor 张晓宇
Owner JIANGMEN POLYTECHNIC
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