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A Planar Chord Angle Displacement Sensor

A technology of angular displacement sensors and strings, which is applied in the direction of instruments, measuring devices, and electric devices, etc., can solve the problems of difficult number of sensor slots, etc., achieve high displacement detection accuracy, improve displacement measurement accuracy, and improve the effect of wire accuracy

Inactive Publication Date: 2016-08-17
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a limited space, it is very difficult to increase the number of sensor slots by traditional processing methods

Method used

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  • A Planar Chord Angle Displacement Sensor
  • A Planar Chord Angle Displacement Sensor
  • A Planar Chord Angle Displacement Sensor

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Experimental program
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Embodiment Construction

[0016] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] see figure 2 , the stator adopts planar string winding, which is composed of A, B, and C three-phase windings. They are arranged with a mutual difference of 2τ / 3 in space. As the induction winding of the sensor, each phase winding is composed of several conductive windings with a pole distance of τ . That is, the pole pitch of each phase winding is τ, the difference between the B-phase winding and the A-phase winding is 2τ / 3, and the difference between the C-phase winding and the B-phase winding is 2τ / 3. The wiring sequence is: Phase A 1-2-3-4; Phase B 1-2-3-4; Phase C 1-2-3-4.

[0018] see image 3 , the mover adopts a planar winding in the shape of a rectangle, and a single-phase winding is composed of many rectangles with a certain width and a pole pitch of τ in series, which are used as the excitation winding of the se...

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Abstract

The invention provides a plane cord angular displacement sensor which comprises a rotor and a stator. The stator adopts cord plane winds, three-phase winds of A, B and C are arranged at the interval of 2t / 3 in space to serve as sensing winds, and each phase of wind is formed by a plurality of conducting winds with the root pole interval as t. The rotor adopts single phase winds which are formed by connecting rectangular plan winds with the same pole interval in a series mode, and the single phase winds serve as excitation winds. By means of an excitation magnetic field produced by the excitation winds of the rotor, three-phase induced electromotive force signals with the phases at the interval of 120 degrees and being in an accurate function relation with displacement are generated on the sensing winds of the stator in a sensing mode. The plane cord angular displacement sensor can improve counter pole number, improves sensing signal quality, and improves displacement measurement precision from a source.

Description

technical field [0001] The invention belongs to the field of precision displacement measurement, and in particular relates to a precision measurement device for angular displacement. Background technique [0002] The angular displacement sensor is an angular displacement measuring element. The displacement sensor widely used at present is a grating type displacement sensor based on the "spatial precision delineation" technology. Typical representatives include gratings, inductive synchros, magnetic gratings, capacitive gratings, ball grids, and time gratings. This type of sensor uses a variety of precision manufacturing techniques to form precise and dense grid lines in space as a measurement reference, increasing the density of space lines, and the more the number of poles, the higher the accuracy of displacement measurement. However, in a limited space, it is very difficult to increase the number of sensor slots by traditional processing methods. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30
Inventor 冯济琴王先全
Owner CHONGQING UNIV OF TECH
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