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Output signal combination method for three-component optical fiber balance

A technology of output signal and combination method, which is applied in the field of aerospace force measurement, can solve the problems of long installation period and high cost, and achieve the effect of reducing the number of uses, shortening the installation period and reducing costs

Active Publication Date: 2018-09-07
中国空气动力研究与发展中心超高速空气动力研究所
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AI Technical Summary

Problems solved by technology

[0011] In the installation process of fiber optic balance fiber optic strain gauge, the more strain gauges are used, the higher the cost and the longer the installation period

Method used

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  • Output signal combination method for three-component optical fiber balance
  • Output signal combination method for three-component optical fiber balance
  • Output signal combination method for three-component optical fiber balance

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0047] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0048] A method for combining output signals of a three-component fiber optic balance of the present invention, such as figure 1 with 2 As shown, the three-component fiber optic balance includes: a model connection end 1, a first single-column beam 2, an axial force element 3, a second single-column beam 4, a strut 5 and a bracket connection end 6 arranged in sequence. An optical fiber strain gauge (any one of 25, 26, 27, 28), (21 or 22), ( 23 or 24); the first single-column beam 2 and the second single-column beam 4 together form a combined element of normal force / pitching mo...

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Abstract

The invention discloses an output signal combination method for a three-component optical fiber balance. The three-component optical fiber balance includes a model connecting end, a first single column beam, an axial force element, a second single column beam, a supporting rod and a bracket connecting end which are arranged in sequence. A measurement beam of the axial force element, the first single column beam and the second single column beam each are provided with an optical fiber strain gauge. The first single column beam and the second single column beam jointly form a normal force / pitchmoment combination element. A signal output value of a normal force component of the three-component optical fiber balance is the sum of an output value of the optical fiber strain gauge on the firstsingle column beam and an output value of the optical fiber strain gauge on the second single column beam; a signal output value of a pitch moment component of the three-component optical fiber balance is the sum of the output value of the optical fiber strain gauge on the first single column beam and the output value of the optical fiber strain gauge on the second single column beam; and a signaloutput value of an axial force component of the three-component optical fiber balance is an output value of the optical fiber strain gauge on the axial force element.

Description

technical field [0001] The invention belongs to the technical field of aerospace force measurement test, and in particular relates to an output signal combination method of a three-component optical fiber balance. Background technique [0002] Optical fiber strain gauges have many advantages such as anti-electromagnetic interference, corrosion resistance, high measurement sensitivity, good real-time performance, stability and reliability, and simple structure, providing a new technical approach for the development of wind tunnel strain balances. At present, the research on fiber optic balance is still in the feasibility verification stage of wind tunnel test application, and the work of fiber optic strain gauge selection and balance structure optimization design is mainly carried out, but the signal processing method of fiber optic balance is less researched. At present, the processing method of the optical fiber balance signal still adopts the Wheatstone bridge method simil...

Claims

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Application Information

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IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 闵夫戴金雯杨彦广邱华诚李绪国皮兴才刘志强冯双
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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