Detecting system and method for curved surface vibration deformation

A detection system and detection method technology, which can be applied to measurement devices, instruments, optical devices, etc., can solve problems such as the inability to reflect the internal conditions of vibration, and the inability to analyze the force condition of flexible curved surfaces.

Inactive Publication Date: 2009-05-06
SHANGHAI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

These measurement methods cannot reflect the internal conditions of vibration, and cannot analyze the internal force conditions of flexible surfaces.

Method used

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  • Detecting system and method for curved surface vibration deformation
  • Detecting system and method for curved surface vibration deformation
  • Detecting system and method for curved surface vibration deformation

Examples

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Embodiment Construction

[0046] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0047] See figure 1 , the curved surface vibration deformation detection system, including a vibrating surface ①, a signal generator ④ (model: SFG-2110 production unit: Taiwan Good Inst), a DC power supply ③, a vibration exciter ⑤ (model: JZK —10 Production unit: Jiangsu Lianeng Electronics Co., Ltd.), implanted FBG sensor ②, a fiber grating demodulator ⑥ (model: FONT-2201A production unit: Shanghai Zishan Optoelectronics Technology Co., Ltd.), a graphics processing computer ⑦, a monitor ⑧.

[0048] The DC power supply ③, the exciter ⑤, and the signal generator ④ make the curved surface ① produce various vibration modes; the FBG sensor ② is implanted according to the change of the surface stress and its reflection wavelength changes; the FBG demodulator ⑥ detects the change of the wavelength, The wavelength change is transmitted to the graphics processor...

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Abstract

A method for detecting deformation of curved surface vibration includes implanting FBG into surface form to be measured in distribution mode, obtaining central wavelength and changed value of FBG transducer through transducer demodulator when surface from to be measured is vibrated, converting obtained data to be distributed curvature information, restructuring curved surface form according to curvature information and arc length information then displaying restructured curved surface form on screen. The system used for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to a curved surface vibration deformation detection system and method, and mainly relates to a flexible curved surface vibration deformation detection based on a Bragg fiber grating (Fiber Bragg Grating) sensor network. Background technique [0002] Aircraft solar panels have a huge structure and only one end is fixed. The environment of the aircraft flying in space is harsh and it is very easy to induce vibration. According to relevant research and analysis, the vibration of sailboards generally presents nonlinear characteristics and has different order modal frequencies. If the vibration is in a divergent state, the vibration amplitude will become larger and larger, and the vibrating sailboard will affect the space operation attitude of the aircraft and reduce the service life of the aircraft. For the above vibration, if it can be accurately measured and monitored to obtain the vibration of the sailboard, it can guide the desig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16G01B11/24
Inventor 钱晋武樊红朝章亚男沈林勇朱晓锦
Owner SHANGHAI UNIV
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