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Rotary transformer system and rotator with rotary transformer system

A rotary transformer and rotary body technology, applied in the detection field, can solve problems such as the detection accuracy of the rotary transformer to be improved, the adverse effect of the consistency of the rotary transformer, and the failure of the winding rotary transformer, so as to prevent adverse effects, overcome the risk of short circuit, and eliminate the magnetic Effect of Coupling Interference

Pending Publication Date: 2017-05-31
苏州昱泽智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing rotary transformer, at least three sets of windings are usually wound on the teeth of the stator, which makes its manufacturing process very complicated, and the consistency of the rotary transformer is adversely affected due to the different positions of the windings; at the same time, during use , it is easy to cause the resolver to fail due to problems such as winding short circuit or open circuit due to vibration and shock, and the reliability is poor
In addition, the detection accuracy of the existing resolver still needs to be improved

Method used

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  • Rotary transformer system and rotator with rotary transformer system
  • Rotary transformer system and rotator with rotary transformer system
  • Rotary transformer system and rotator with rotary transformer system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0050] In the first embodiment, the number of detected teeth of the stator in the first resolver is set according to the aforementioned 4*(M+1), and at this time, the value of M is 2, so the number of detected teeth of the stator of the first resolver is 12, and the number of salient poles of the rotor is 12. is 1. The number of detected teeth of the stator and the number of salient poles of the rotor in the second resolver are respectively 4*(K+1)*S and (K+1)*(2N-1)*S, where K is 2 and S is 2. The value of N is 1, and the value of N is 2, so the number of detected teeth of the stator of the second resolver is 12, and the number of salient poles of the rotor is 9.

[0051] Figure 1a A schematic cross-sectional view of the stator and rotor of the first rotary transformer in this embodiment; Figure 1b It is a schematic cross-sectional view of the stator and rotor of the second rotary transformer in this embodiment. In the first resolver and the second resolver, the stator in...

no. 2 example

[0092] In the second embodiment, stator decoupling teeth are provided on both resolvers. The number of detected teeth of the stator of the first resolver is 4, and the number of salient poles of the rotor is 1. In the second resolver, the number of detected teeth of the stator and the number of salient poles of the rotor are respectively 4P and Q. At this time, the value of P is 2 and the value of Q is 10. Therefore, the number of teeth detected by the stator of the second resolver is 8, and the number of salient rotors is 8. The number of poles is 10. In the first rotary transformer, there are 4 stator decoupling teeth; in the second rotary transformer, there are 8 stator decoupling teeth.

[0093] Figure 4a A schematic cross-sectional view of the stator and rotor of the first rotary transformer in this embodiment; Figure 4b It is a schematic cross-sectional view of the stator and rotor of the second rotary transformer in this embodiment. In the first resolver and the s...

no. 3 example

[0103] In the third embodiment, the number of detected teeth of the stator in the first resolver is 4*(M+1), and the value of M is 7, so the number of detected teeth of the stator of the first resolver is 32 and the number of salient poles of the rotor is 1. The number of detected teeth of the stator and the number of salient poles of the rotor in the second resolver are respectively 4*(K+1)*S and (K+1)*(2N-1)*S, K is 7, S is 7 is 1, and N is 2, so the number of detected teeth of the stator of the second resolver is 32, and the number of salient poles of the rotor is 24.

[0104] Figure 5a A schematic cross-sectional view of the stator and rotor of the first rotary transformer in this embodiment; Figure 5b It is a schematic cross-sectional view of the stator and rotor of the second rotary transformer in this embodiment. In the first resolver and the second resolver, the stator includes a stator iron core, the rotor includes a rotor iron core, and both the stator iron core ...

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Abstract

The invention provides rotary transformer system and a rotator with rotary transformer system. The system comprises at least two rotary transformers at least comprising a first rotary transformer and a second rotary transformer. Each rotary transformer comprises a stator and a rotor. The stator comprises stator detecting teeth. The rotor comprises a rotor salient pole. Each rotary transformer comprises a plurality of coils which are wound around stator detecting teeth. The inductance of coils changes with the changing of rotation angle of the corresponding rotor . The rotor of the first rotary transformer only comprises one rotor salient pole. The rotor of the second rotary transformer comprises two or more than two rotor salient poles. At least the rotor of the first rotary transformer and the rotor of the second rotary transformer rotate synchronously. The rotator also comprises a rotator body. The rotation angle of rotary transformer system and the rotation angle of rotator body form regular relations. The system greatly improves the absolute position measurement accuracy of the rotor.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a transformer system and a rotating body, in particular to a rotary transformer system and a rotating body. Background technique [0002] Numerical control machine tools, industrial automation, industrial robots and other industries require fast and high-precision position control. At present, it is mainly realized by servo motors, and its positioning ability largely depends on the absolute position angle detection device installed on the servo motors. [0003] The photoelectric absolute position angle detection device has been widely used because it can easily detect the rotation angle of the motor. However, this photoelectric absolute position angle detection device contains photoelectric components and semiconductor devices, so it is difficult to operate in environments with large vibration and shock and high temperature. It is easy to fail. [0004] A resolver is a sensor th...

Claims

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Application Information

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IPC IPC(8): G01D5/22
CPCG01D5/2291
Inventor 高翔
Owner 苏州昱泽智能科技有限公司