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Sensor for detecting high-precision corner and torque of precision mechanism

A precision mechanism and high-precision technology, applied in the direction of torque measurement, instruments, measuring devices, etc., can solve the problems of inconvenient use and difficulty, and achieve the effect of convenient installation, fewer components and simple structure

Active Publication Date: 2012-09-05
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional rotation angle or torque sensors use strain gauges pasted and form a bridge to measure the torsion of the shaft system, and accurately monitor the performance of high-speed rotating machinery in real time. It is optimized for the use of vehicles and equipment such as automobiles, aero engines, and machine tools. Both safety and operation safety are very important, and there is an urgent need for an integrated rotating mechanism that can be used to simultaneously monitor the rotational speed, steering, and quasi-static and dynamic torque changes of the shaft. Currently, such a function-integrated integrated There are great difficulties with the rotating mechanism
[0003] After searching the existing technology, it is found that Chinese patent application number 200510115149 records a "clamp ring torque sensor". , the sensitivity of the bridge is the key to the quality of signal acquisition, especially the signal collected by the strain gauge must be transmitted through the cable, so the cable sensing method for the detection of the rotating shaft is very inconvenient to use, even This method cannot be used for high-speed rotation

Method used

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  • Sensor for detecting high-precision corner and torque of precision mechanism
  • Sensor for detecting high-precision corner and torque of precision mechanism
  • Sensor for detecting high-precision corner and torque of precision mechanism

Examples

Experimental program
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Effect test

Embodiment 2

[0030] like figure 2As shown, this embodiment includes: a fixed sleeve 1, a rotating shaft 3, a magnetic bias permanent magnet 4, a magneto-deformable body 5, a force conversion body 6, an excitation permanent magnet 7 and a sensor body fastener 8, wherein: the fixed The sleeve 1 and the rotating shaft 3 are sequentially socketed from the outside to the inside, the excitation permanent magnet 7 is arranged on the rotating shaft 3, the magnetic bias permanent magnet 4, the magnetic deformation body 5, the force conversion body 6 and the sensor body fastener 8 are sequentially arranged They are fixedly connected in series and arranged on the fixed sleeve 1.

[0031] The excitation permanent magnet 7 is arranged on the outer end surface of the rotating shaft 3. In this case, rotating the rotating shaft 3 or directly rotating the permanent magnet 7 (such as rotating by hand) can also realize the corresponding function that can be detected in embodiment 1.

Embodiment 3

[0033] like image 3 As shown, the rotating shaft 3 described in this embodiment has a tubular structure, and the outer casing 1 and its sensing body are placed inside the rotating shaft 3 to realize various sensing functions described in the above embodiments.

[0034] Through the above-mentioned device and implementation technical link, this device generates the change of the corresponding electric / magnetic signal by detecting the force conversion body 6 on the sensing body excited by the excitation permanent magnet 7 during the rotation process. The sensor of the proposed device for the rotation of the rotating shaft can be used as a torque sensor for the rotating shaft under the rotation angle or quasi-static torque. Secondly, by calibrating the corresponding relationship between the generated electric / magnetic signal and the excitation permanent magnet 7, that is, the rotation angle or the phase change of the rotation cycle of the rotation shaft 3 before and after the est...

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Abstract

The invention discloses a sensor for detecting high-precision corner and torque of a precision mechanism. The sensor comprises a fixed sleeve, a rotary mechanism, a magneto-deformation body, a force conversion body, an excitation permanent magnet, a sensor fastening piece, and a rotating sleeve fastening piece, wherein the excitation permanent magnet is arranged on the rotary mechanism; the magneto-deformation body, the force conversion body and the sensor fastening piece are sequentially and fixedly connected in series and arranged on the fixed sleeve; and the fixed sleeve is not in contact with the rotary mechanism. The sensor has a compact structure, high structural strength, and can obtain sensor electrical signals conveniently without power supply.

Description

technical field [0001] The invention relates to a device in the field of sensor technology, in particular to a sensor for detecting high-precision rotation angle and torque of a precision mechanism based on the composite action of permanent magnet, magnetostrictive and piezoelectric materials or devices. Background technique [0002] The traditional rotation angle or torque sensors use strain gauges pasted and form a bridge to measure the torsion of the shaft system, and accurately monitor the performance of high-speed rotating machinery in real time. It is optimized for the use of vehicles and equipment such as automobiles, aero engines, and machine tools. Both safety and operation safety are very important, and there is an urgent need for an integrated rotating mechanism that can be used to simultaneously monitor the rotational speed, steering, and quasi-static and dynamic torque changes of the shaft. Currently, such a function-integrated integrated Rotating mechanisms pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/30G01L3/00
Inventor 杨斌堂
Owner SHANGHAI JIAOTONG UNIV
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