Spatial shape reconstruction using orthogonal fiber Bragg grating sensor array |
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| Authors: | Jincong Yi Xiaojin Zhu Hesheng Zhang Linyong Shen Xiaoping Qiao |
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| Affiliation: | 1. School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 20072, PR China;2. College of Computer and Information Science, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China;1. Beijing Key Laboratory of Optoelectronic Measurement Technology, Beijing Information Science & Technology University, Beijing, 100101, China;2. Bionic and Intelligent Equipment Lab, Beijing Information Science and Technology University, Beijing 100016, China;1. Aerospace Engineering and Aviation, RMIT University, Melbourne, Australia;2. Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy;1. School of Mechanical Engineering, Shandong University, Jinan, China;2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, Shandong University, Jinan, China;3. National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan, China;1. Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China;2. Bionic and Intelligent Equipment Lab, Beijing Information Science and Technology University, Beijing, China;1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough LE11, United Kingdom;3. National Center for Space Science, Chinese Academy of Sciences, Beijing 100083, China;1. ITEAM, Universitat Politècnica de València, Camino de Vera s/n, Valencia 46022, Spain;2. ICITECH, Universitat Politècnica de València, Camino de Vera s/n, Valencia 46022, Spain |
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| Abstract: | With distributed orthogonal fiber Bragg grating (FBG) sensor arrays used as modular detection units, an implementation method for deformation detection and spatial shape reconstruction of a frame model structure was proposed in this paper. After brief introduction of curvature detection principle of FBG sensor, the design, fabrication and encapsulation of the FBG modular detection unit were illustrated detailedly. Every unit was composed of four optical fibers, each containing an array of FBG strain sensors. In addition, the method and procedure of the reconstruction algorithm of three dimensional spatial curve based on orthogonal curvature were also described in detail, as well as discrete curvature continuity method. The constructed algorithm was applied to reconstruction the vibration deformation of the experimental frame model, in which four FBG modular detection units were embedded. Afterward, experimental test and verification were performed for static bending and dynamic excitation of the frame model structure, using the developed experiment system. And experimental results verified the feasibility and effectiveness of deformation detection and spatial shape reconstruction based on orthogonal FBG sensor array. Moreover, the results indicated that the proposed method can provide useful research thinking for the further study of active monitoring of flexible space structures. |
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