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High-precision key phase-based non-contact dynamic measurement system for measuring torque of revolving shaft

A dynamic measurement, high-precision technology, applied in the direction of torque measurement, measuring device, power measurement, etc., can solve the problem of inapplicability of dynamic torque measurement of the rotating shaft, and achieve the effects of eliminating accumulated errors, improving measurement accuracy, and convenient installation

Active Publication Date: 2017-03-22
善测(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a non-contact dynamic measurement system of rotating shaft torque based on high-precision key phase. The invention solves the problem that the existing dynamic torque measurement of rotating shaft is not applicable in the actual field, and meets various needs in practical applications. , see the description below:

Method used

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  • High-precision key phase-based non-contact dynamic measurement system for measuring torque of revolving shaft
  • High-precision key phase-based non-contact dynamic measurement system for measuring torque of revolving shaft
  • High-precision key phase-based non-contact dynamic measurement system for measuring torque of revolving shaft

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A non-contact dynamic measurement system for rotating shaft torque based on high-precision key phase, see figure 1 and figure 2 , the measuring system includes: a coding stripe 2 arranged on the measured rotating shaft 1,

[0037] Among them, a group of first coded stripes 2 are sprayed or pasted at a fixed distance on the tested rotating shaft 1, and the first coded stripes 2 are coded stripes with equal intervals between black and white (that is, there are two black and white alternated stripes on the tested rotating shaft 1). The first coding stripe 2); and spraying or pasting the second coding stripe 16 near any one of the first coding stripe 2, the second coding stripe 16 has only one white stripe (that is, the white stripe is positioned at the first black and white stripe Near the coding stripe 2, and there is only one white stripe), the white stripe of the second coding stripe 16 is used as a key phase signal.

[0038] Facing each coded stripe (i.e. a group of...

Embodiment 2

[0045] Combine below Figure 1 to Figure 4 The scheme in Example 1 is discussed in detail, see the following description for details:

[0046] The embodiment of the present invention adopts fiber optic timing sensor 3, see figure 2 , has the advantages of lightness, softness, and good electromagnetic compatibility, and is suitable for field applications. Some on-site environments require a large working distance of the probe (that is, the distance from the end face of the probe to the axis) for safety reasons, and a focusing and collimating structure is designed.

[0047]The fiber optic timing sensor 3 adopts Y-shaped fiber bundle, and the central fiber is the transmitting fiber, which closely surrounds M receiving fibers, which can be precisely circled 1 or 2 times. Generally, M=6 is sufficient to meet the requirements.

[0048] The laser light source 10 transmits and emits the laser light through the emitting fiber, and collimates and emits the laser light through the foc...

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Abstract

The present invention discloses a high-precision key phase-based non-contact dynamic measurement system for measuring the torque of a revolving spindle. The system comprises a set of first encoded strips sprayed or pasted onto the fixed-distance part of a to-be-measured revolving shaft, wherein the set of first encoded strips is composed of encoded strips chequered with black and white at equal intervals; spraying or pasting a second encoded strip at any part of the first encoded strips, wherein the second encoded strip is only a white strip and is used for serving as a key phase signal; respectively installing an optical fiber type timing sensor for each encoded strip, and installing a focusing lens at the probe of each sensor, wherein the focusing lens is used for collimating an emitted light beam and the diameter of the light beam is small; adopting the optical fiber type timing sensor corresponding to the second encoded strip as a synchronization key phase; receiving the reflected light signal of the white strip by the optical fiber type timing sensor, converting the reflected light signal into a timing pulse by a signal processing circuit, and inputting the timing pulse into a controller through a high-speed and high-precision timing acquisition card for further treatment. According to the technical scheme of the invention, the problem in the prior art that the existing measurement system for measuring the dynamic torque of the revolving shaft is not applicable in the actual field can be solved.

Description

technical field [0001] The invention relates to the field of dynamic torque measurement of rotating shafts, in particular to a non-contact dynamic measuring system of rotating shaft torque based on high-precision key phase. Background technique [0002] At present, the shaft dynamic torque measurement mainly has the following types: [0003] (1) Resistance strain gauge torque measurement: Paste the strain gauge on the measured shaft system, connect it to an external circuit through a lead, and obtain the torque information of the shaft system by measuring the resistance change of the resistance strain gauge. This measurement is a contact measurement. There are shortcomings such as complicated test and modification, difficult signal transmission of rotating parts, and low reliability, making it difficult to achieve high-speed dynamic torque measurement. [0004] (2) Laser Doppler torque measurement: use the laser sensor to measure the rotational speed of the measured shaft a...

Claims

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Application Information

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IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 叶德超李杨宗段发阶苏宇浩李旭郭岩
Owner 善测(天津)科技有限公司