Co-excitation coarse-refined coupling magnetic resistance type rotary transformer

A resolver, coarse-fine coupling technology, applied in the direction of transformer, transformer/inductor core, transformer/inductor coil/winding/connection, etc. Affect the accuracy of measurement and other issues, and achieve the effect of strong anti-electromagnetic interference ability, elimination of errors, and good anti-vibration performance.

Active Publication Date: 2012-12-26
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing reluctance rotary transformer adopts a radial magnetic circuit variable reluctance structure. When the air gap is large, the input impedance and output impedance of the rotary transformer will decrease, which not only affects the measurement accuracy, And it will lead to the problem of the decline of load performance, and then provide a co-excitation coarse and fine coupling reluctance resolver

Method used

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  • Co-excitation coarse-refined coupling magnetic resistance type rotary transformer
  • Co-excitation coarse-refined coupling magnetic resistance type rotary transformer
  • Co-excitation coarse-refined coupling magnetic resistance type rotary transformer

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0016] Such as Figure 1~Figure 5 As shown, a co-excitation coarse-fine coupling reluctance rotary transformer involved in this embodiment includes: a rotor 1, a stator 2, an excitation winding 8 and a signal winding, and there is an air gap 3 between the stator 2 and the rotor 1 structure;

[0017] The rotor 1 is composed of a magnetically permeable material 1-1 and a non-magnetically permeable material 1-2, the non-magnetically permeable material 1-2 is located on both sides of the magnetically permeable material 1-1, the rotor 1 is cylindrical, and the magnetically permeable material 1 -1 is a wavy conduction tape, dis...

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Abstract

The invention provides a co-excitation coarse-refined coupling magnetic resistance type rotary transformer, belonging to the technical field of rotary transformers. According to the rotary transformer, a set of excitation winding shares the same one magnetic circuit to generate a group of coarse sine and cosine position signals and one group of refine sine and cosine position signals. A stator coarse machine is of a multi-pole winding, and a refined machine is of an antipode winding. Not only can an antipode absolute position signal be provided, and also a multi-pole position signal with high precision can be provided. The rotary transformer adopts an axial magnetic circuit-magnetic resistance type rotary structure. The volume and the diameter can be adjusted freely according to needs. According to the co-excitation coarse-refined coupling magnetic resistance type rotary transformer, the structure is compact and simple, not only is the extremely strong shock resistance provided, also the potential constant component is reduced, and further, the error caused by the mounting eccentricity is eliminated to the maximum limit. The rotary transformer can be applied to various fields of electric automobiles, aviation and aerospace and the like.

Description

technical field [0001] The invention relates to a co-excitation coarse-fine coupled reluctance rotary transformer, which belongs to the technical field of rotary transformers. Background technique [0002] The multi-pole resolver is used as a high-precision position testing element, and the complementarity of its magnetic circuit structure can offset the measurement error caused by eccentricity and the like. Existing resolvers include contact resolver, resolver with coupling transformer, and vernier resolver. Although brushless is gradually realized, the structure is still relatively complicated and the error is large, which is not conducive to high-precision measurement. . The existing reluctance rotary transformer adopts a radial magnetic circuit variable reluctance structure, and the principle of this structure is to change the potential amplitude of the output signal by changing the length of the air gap. When the air gap is large, the input impedance and output impeda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/18H01F27/28H01F27/24H02K1/02H02K1/16H02K3/12
CPCY02T10/641Y02T10/64
Inventor 尚静王昊刘承军江善林赵猛
Owner HARBIN INST OF TECH
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