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Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor

A displacement sensor and anti-rotation technology, which is applied in the field of displacement sensors, can solve the problems of narrow installation space, strong vibration and strong shock resistance, and short travel of displacement sensors, so as to improve the ability of pressure resistance, strong vibration and strong shock resistance, and improve Effects of airtightness and pressure resistance, improvement of electrical connectivity

Inactive Publication Date: 2017-05-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The displacement sensor supporting the four-redundancy servo valve of the heavy-duty launch vehicle servo mechanism needs to have such elements as short stroke, narrow installation space, resistance to strong vibration and strong impact environment, and pressure resistance, and the characteristics of the displacement sensor used in the past cannot fully meet this requirement.

Method used

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  • Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor
  • Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor
  • Micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, a small stroke double redundant anti-rotation LVDT displacement sensor provided by the present invention includes a first coil assembly 3, a second coil assembly 4, a magnetic isolation spacer 7, an iron core assembly 6, and a sleeve 5 , Shell 2, lead wire 1 and end cap 8.

[0029] The first coil assembly 3, the second coil assembly 4 and the magnetic isolation spacer 7 are installed in the cylindrical shell 2, and one end of the iron core assembly 6 is sleeved inside the first coil assembly 3 and the second coil assembly 4, and the iron core assembly The other end of 6 is suspended outside the housing 2, one end of the sleeve 5 is sleeved between the iron core assembly 6, the first coil assembly 3, the second coil assembly 4, and the magnetic isolation spacer 7, and the other end of the sleeve 5 Suspended o...

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Abstract

The invention discloses a micro-stroke, double-redundancy torsion-preventive LVDT displacement sensor, and belongs to a displacement sensor. The sensor comprises first and second coil assemblies, a magnetic insulation pad, an iron core assembly, a sleeve, a casing, a leading-out wire and an end cap, the first and second coil assemblies and the magnetic insulation pad are mounted in the casing, one end of the iron core assembly is sleeved by the first and second coil assemblies and the magnetic insulation pad, the magnetic insulation pad is positioned between the first and second coil assemblies, the other end of the iron core assembly is suspended beyond the casing, one end of the sleeve is sleeved among the first and second coil assemblies and the magnetic insulation pad, the other end of the sleeve is suspended outside the casing, one end of the leading-out wire is lead out of the second coil assembly, penetrates the magnetic insulation pad and is fixed to the first coil assembly, and the other end of the leading-out wire penetrates out of the casing. The sensor has the advantages of double redundancy, torsion prevention, high stability and high withstand voltage.

Description

technical field [0001] The invention belongs to a displacement sensor, in particular to a pressure-resistant micro-stroke double-redundant anti-twist LVDT displacement sensor. Background technique [0002] The displacement sensor is a supporting product of the four-redundancy servo valve of the heavy-duty launch vehicle servo mechanism, which is used for small displacement measurement and feedback of the four-redundancy servo valve of the heavy-duty launch servo mechanism. The displacement sensor supporting the four-redundancy servo valve of the heavy-duty launch vehicle servo mechanism needs to have such elements as short stroke, narrow installation space, resistance to strong vibration and strong impact environment, and pressure resistance, and the characteristics of the displacement sensor used in the past cannot fully meet this requirement. . Contents of the invention [0003] The object of the present invention is to provide a small-stroke dual-redundancy anti-rotati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00
Inventor 李文璋刘书选任海燕王臻
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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