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Winding Coordination and Turn Selection Method for Single-Pair Wound Resolver Transformer

A rotary transformer and wire-wound technology, which is applied in the direction of transformers, inductors, electrical components, etc., can solve problems such as principle constraints, and achieve the effects of reducing geometric size, improving manufacturability and economy

Active Publication Date: 2020-11-24
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Considering the limitation of the minimum width of the iron core slots, there are theoretical constraints on the geometric dimensions of the resolver under the existing design methods. For example, the diameter of the servo motor encoder is rarely less than 36mm.

Method used

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  • Winding Coordination and Turn Selection Method for Single-Pair Wound Resolver Transformer
  • Winding Coordination and Turn Selection Method for Single-Pair Wound Resolver Transformer
  • Winding Coordination and Turn Selection Method for Single-Pair Wound Resolver Transformer

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Embodiment

[0044] As shown in Table 1, the cogging with prime numbers and the harmonic order distribution of residual teeth provided by the embodiment of the present invention, where the black box is marked as a high-precision winding, which can be selected first, and the last constant item of the polynomial, for example, corresponds to 5:6 The 11 of 7:10 corresponds to 29 and so on, indicating the lowest order residual tooth harmonic. In the non-black frame marked items, the number of stator-rotor fits corresponding to the local maximum of the lowest residual tooth harmonic order is the local optimal fit. In the design of a single-pair wound resolver, the lowest residual tooth harmonic order is above 20, and the accuracy can reach ±10'. It can be used as the actual product winding matching choice, but it is preferred when conditions permit. Optimal fit or suboptimal fit.

[0045] The stator of the single-pair pole wound resolver conforming to the attached table 1 is a prime number slot...

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Abstract

The invention discloses a winding cooperation and turn selection method of a single-opposite-pole coiling type brushless rotary transformer, and belongs to the fields of sensors, special motors and mini motors. Influence of the lowest-order tooth harmonic v0 is inhibited by a skewed slot measure, the interval H between the adjacent tooth harmonic orders is increased to inhibit the higher order harmonic component, a proper prime number is selected for winding cooperation, a winding is determined, and on the basis of the winding cooperation number, a lower limit of the turn amplitude (namely a value of the winding minimal turn amplitude) is determined, and high-precision angle measurement is realized. On the premise that the precision is maintained, the problems that copper wires of concentric sine windings in the multiple of 4 is low in the utilization rate and relatively hard to wind, and the minimal cooperation number 8:12 is hard to be lower are solved, related technical and economical performance is improved, and the size of the rotary transformer can be reduced.

Description

technical field [0001] The invention belongs to the fields of sensors, special motors and micro motors, and in particular relates to a method for winding coordination and coil selection of a single-pair pole-wound rotary transformer. Background technique [0002] Currently, the closest prior art: [0003] Resolver (hereinafter referred to as resolver) was born at the end of World War II. It is a typical position measurement sensor in automatic control systems. It is especially suitable for accurate measurement of angle and angular velocity in extremely harsh environments. It has been mainly used for high-end military equipment or Industrial equipment currently mainly includes two types of wire-wound brushless resolvers and reluctance resolvers, with different configuration schemes such as single-pole and multi-pole. The classic resolver is based on the principle of electromagnetic induction. The output signal is a sine-cosine amplitude modulation carrier relative to the mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/18G01D5/22
Inventor 范良志
Owner WUHAN TEXTILE UNIV