Spatial shape reconstruction using orthogonal fiber Bragg grating sensor array

Yi, Jincong; Zhu, Xiaojin; Zhang, Hesheng; Shen, Linyong; Qiao, Xiaoping

doi:10.1016/j.mechatronics.2011.10.005

Cited by 65 publications

(37 citation statements)

References 22 publications

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“…Using commercially available SSMF, FBGs and interrogator systems has been particularly of interest to develop application specific FOSS. Many shape-sensing research projects have used a triangular FBG arrangement for shape sensing [42,[44][45][46][47][48][96][97][98][99], helically wrapped single fibres [100], parallel fibres [101] and an orthogonal fibre arrangement [102,103]. A comprehensive review of these works, which summarises different shape sensing approaches using standard single-mode, is reported in literature [85].…”

Section: Standard Single-mode Fibresmentioning

confidence: 99%

Recent developments in fibre optic shape sensing

et al. 2018

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This paper presents a comprehensive critical review of technologies used in the development of fibre optic shape sensors (FOSSs). Their operation is based on multi-dimensional bend measurements using a series of fibre optic sensors. Optical fibre sensors have experienced tremendous growth from simple bend sensors in 1980s to full three-dimensional FOSSs using multicore fibres in recent years. Following a short review of conventional contact-based shape sensor technologies, the evolution trend and sensing principles of FOSSs are presented. This paper identifies the major optical fibre technologies used for shape sensing and provides an account of the challenges and emerging applications of FOSSs in various industries such as medical robotics, industrial robotics, aerospace and mining industry.

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Section: Standard Single-mode Fibresmentioning

confidence: 99%

Recent developments in fibre optic shape sensing

et al. 2018

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“…It turns strains into curvature information and then reconstructs the deformed surface of structure. There are mainly two methods in this area, curve-fitting method [40][41][42][43][44][45][46][47] and surfacepatch-fitting method. 48,49 By the integration of curvature, curve-fitting method fits the deflection curves of structure and then reconstructs the whole deformed surface of it.…”

Section: Introductionmentioning

confidence: 99%

Strain‐based displacement field reconstruction method for thin rectangular plate through orthogonal deflection curves bridging

Luo

Gao

et al. 2019

Struct Control Health Monit

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Summary In the existing studies of strain‐based displacement field detection for thin rectangular plate, either the boundary conditions are too difficult to handle or the sensors layout and algorithm computing process are too complex to satisfy the requirement of rapid reconstruction of nonlinear vibration shape. In this paper, a strain‐displacement conversion method for reconstructing the deformed shape of rectangular plate with typical boundary conditions is presented. This method overcomes the above shortcomings for small deflection nonlinear vibration in linear elastic range. Strains measuring points are uniformly and regularly distributed in the middle area of the plate. Unmeasurable boundary strains will be estimated using the new derived formula according to quadratic interpolation of strains and boundary conditions. The principle of the proposed method is to bridge the orthogonal deflection curves by translating and rotating them. In this way, framework of displacement field can be formed. First, curvature integral method is employed to shape the orthogonal deflection curves of deformed plate. Then, the rotating angles and translating displacements are deduced according to boundary conditions. For some special boundary plates, it even needs to solve nonlinear optimization problem to get the rotating angles. The displacement field reconstructed by the proposed method shows great agreement with the finite element analyses results, which verifies the effectiveness of the methodology.

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“…Geometrical iteration method mentioned in Yi et al (2012aYi et al ( , 2012b and Xu et al (2013) uses curvature data along a single direction and employs plane curve fitting algorithm to achieve shape reconstruction. Although these methods have good reconstruction performance for pure bending deformation, they are not suited for torsional deformation.…”

Section: Introductionmentioning

confidence: 99%

“…Xu et al (2013) have achieved curved surface reconstruction, but the method is not suited for real-time reconstruction as it needs to solve complex non-linear equations. Yi et al (2012b) proposed a space curve shape reconstruction algorithm, but it is not suited for bend torsion coupling shape reconstruction.…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating plate structure shape reconstruction algorithm based on orthogonal curve net

Zhang

Zhu

Liu

et al. 2016

Journal of Intelligent Material Systems and Structures

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A space curved surface shape reconstruction algorithm is proposed for shape perception and reconstruction of flexible plate structure. First, biorthogonal strain data measured by optimal distributed Fiber Bragg grating sensor network are converted to discrete curvature data. Second, interpolation is done to achieve curvature continuity for structural deformation. Third, moving coordinate systems are established in two orthogonal directions of the orthogonal curved network on the plate surface. Then, all nodal coordinates are computed using the given boundary conditions and nodal curvature. Coordinate transformation is done for two orthogonal coordinates according to the coupling relationship. Finally, a square flexible smart Fiber Bragg grating plate is constructed by implanting fiber grating sensor network, and a visualization experimental platform is constructed. Experimental analysis and verification were done. The experimental results show that the proposed shape reconstruction algorithm has good reconstruction performance for pure bending deformation, torsional deformation, and low-frequency dynamic vibration shape.

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Spatial shape reconstruction using orthogonal fiber Bragg grating sensor array

Cited by 65 publications

References 22 publications

Recent developments in fibre optic shape sensing

Recent developments in fibre optic shape sensing

Strain‐based displacement field reconstruction method for thin rectangular plate through orthogonal deflection curves bridging

Fiber Bragg grating plate structure shape reconstruction algorithm based on orthogonal curve net

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