Quantum-behaved particle swarm optimization algorithm for the reconstruction of fiber Bragg grating sensor strain profiles

Zou, Hongbo; Liang, Dakai; Zeng, Jie; Feng, Lijie

doi:10.1016/j.optcom.2011.11.069

Cited by 24 publications

(9 citation statements)

References 20 publications

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“…However, in our application, the strain value and the length of the FBG are small, so there is just one main crest in the reflected spectrum. Although it is possible to obtain the strain along the FBG using optimization algorithms [28], it takes a long time and this not suitable for the dynamic measurement of the ring gear strain. We also want to use Equation (2) to calculate the strain in our application, but the reasonability of this approach needs to be demonstrated, so a simulation of the measurement is made.…”

Section: Characteristics Of the Fbg For The Measurement Of The Rinmentioning

confidence: 99%

An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

Niu

Zhang

Chao-zhen

2017

Sensors

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Abstract:The strain of the ring gear can reflect the dynamic characteristics of planetary gearboxes directly, which makes it an ideal signal to monitor the health condition of the gearbox. To overcome the disadvantages of traditional methods, a new approach for the dynamic measurement of ring gear strains using fiber Bragg gratings (FBGs) is proposed in this paper. Firstly, the installation of FBGs is determined according to the analysis for the strain distribution of the ring gear. Secondly, the parameters of the FBG are determined in consideration of the accuracy and sensitivity of the measurement as well as the size of the ring gear. The strain measured by the FBG is then simulated under non-uniform strain field conditions. Thirdly, a dynamic measurement system is built and tested. Finally, the strains of the ring gear are measured in a planetary gearbox under normal and faulty conditions. The experimental results showed good agreement with the theoretical results in values, trends, and the fault features can be seen from the time domain of the measured strain signal, which proves that the proposed method is feasible for the measurement of the ring gear strains of planetary gearboxes.

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Section: Characteristics Of the Fbg For The Measurement Of The Rinmentioning

confidence: 99%

An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

Niu

Zhang

Chao-zhen

2017

Sensors

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“…To save cost, this approach is mainly based on the intensity spectrum approach [4][5][6][7][8][9][10]. Meanwhile, phase spectrum [11] and complex spectra (i.e.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings

Huang¹,

Wei²,

Chen³

et al. 2014

Meas. Sci. Technol.

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We present an approach for structural damage reconstruction based on the reflection intensity spectra of fiber Bragg gratings (FBGs). Our approach incorporates the finite element method, transfer matrix (T-matrix), and genetic algorithm to solve the inverse photo-elastic problem of damage reconstruction, i.e. to identify the location, size, and shape of a defect. By introducing a parameterized characterization of the damage information, the inverse photo-elastic problem is reduced to an optimization problem, and a relevant computational scheme was developed. The scheme iteratively searches for the solution to the corresponding direct photo-elastic problem until the simulated and measured (or target) reflection intensity spectra of the FBGs near the defect coincide within a prescribed error. Proof-of-concept validations of our approach were performed numerically and experimentally using both holed and cracked plate samples as typical cases of plane-stress problems. The damage identifiability was simulated by changing the deployment of the FBG sensors, including the total number of sensors and their distance to the defect. Both the numerical and experimental results demonstrate that our approach is effective and promising. It provides us with a photo-elastic method for developing a remote, automatic damage-imaging technique that substantially improves damage identification for structural health monitoring.

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“…Compared to the conventional monitoring technologies, FBG technology is formed by using the phase mask method to change the refractive index of the optical fiber [12,13,14,15]. The FBG sensors can measure the distribution of strain, temperature, displacements, and so on with high accuracy and stability [16,17,18,19,20,21,22,23]. This technology has been successfully applied to monitor the field performance of reinforced slopes, dikes, and bridges.…”

Section: Introductionmentioning

confidence: 99%

Study on the Deformation Measurement of the Cast-In-Place Large-Diameter Pile Using Fiber Bragg Grating Sensors

Gao

Yang

Chen

et al. 2017

Sensors

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Compared with conventional piles such as the circle pile, the cast-in-place large-diameter pile (PCC pile) has many advantages: the lateral area of PCC pile is larger and the bearing capacity of PCC pile is higher. It is more cost-effective than other piles such as square pile under the same condition. The deformation of the PCC pile is very important for its application. In order to obtain the deformation of the PCC pile, a new type of quasi-distributed optical fiber sensing technology named a fiber Bragg grating (FBG) is used to monitor the deformation of the PCC pile. The PCC model pile is made, the packaging process of the PCC model pile and the layout of fiber sensors are designed, and the strains of the PCC model pile based on FBG sensors are monitored. The strain of the PCC pile is analyzed by the static load test. The results show that FBG technology is successfully applied for monitoring the deformation of the PCC pile, the monitoring data is more useful for the PCC pile. It will provide a reference for the engineering applications.

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Quantum-behaved particle swarm optimization algorithm for the reconstruction of fiber Bragg grating sensor strain profiles

Cited by 24 publications

References 20 publications

An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

An Approach for the Dynamic Measurement of Ring Gear Strains of Planetary Gearboxes Using Fiber Bragg Gratings

Reconstruction of structural damage based on reflection intensity spectra of fiber Bragg gratings

Study on the Deformation Measurement of the Cast-In-Place Large-Diameter Pile Using Fiber Bragg Grating Sensors

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