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A Displacement Field Perception Method for Component Digital Twin in Aircraft Assembly

School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
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Sensors 2020, 20(18), 5161; https://doi.org/10.3390/s20185161
Received: 3 August 2020 / Revised: 2 September 2020 / Accepted: 7 September 2020 / Published: 10 September 2020
(This article belongs to the Section Fault Diagnosis & Sensors)
Full-field displacement perception and digital twins for core components play a crucial role in the precision manufacturing industry, such as aviation manufacturing. This paper presents a real-time full-field displacement perception method for the combination of online multipoint displacement monitoring and matrix completion theory. Firstly, a conceptual full-field displacement perception model based on the observed information of the multi-points is established. To obtain the full-field displacements of a core component, the component is divided into plentiful discrete points, including observed and unobserved points, based on which the relationship between the observed points and the full-field displacements is established. Then, the solution method of the full-field displacement perception model is proposed. Based on the matrix completion principle and the big data of the simulation, the optimization problem is employed to work out the model and, meanwhile, the pseudo-code is put forward. Finally, the full-field displacement perception experiments are performed. Repeated experiments show that the max error of the displacements calculated by the proposed method can be less than 0.094 mm and the median error can be less than 0.054 mm, while the average time frame can be less than 0.48 s, which is promising considering the high precision and efficiency requirements of the assembly of large aircraft. View Full-Text
Keywords: aircraft manufacture; assembly; full-field displacement perception; digital twin; matrix completion aircraft manufacture; assembly; full-field displacement perception; digital twin; matrix completion
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MDPI and ACS Style

Liang, B.; Liu, W.; Liu, K.; Zhou, M.; Zhang, Y.; Jia, Z. A Displacement Field Perception Method for Component Digital Twin in Aircraft Assembly. Sensors 2020, 20, 5161. https://doi.org/10.3390/s20185161

AMA Style

Liang B, Liu W, Liu K, Zhou M, Zhang Y, Jia Z. A Displacement Field Perception Method for Component Digital Twin in Aircraft Assembly. Sensors. 2020; 20(18):5161. https://doi.org/10.3390/s20185161

Chicago/Turabian Style

Liang, Bing, Wei Liu, Kun Liu, Mengde Zhou, Yang Zhang, and Zhenyuan Jia. 2020. "A Displacement Field Perception Method for Component Digital Twin in Aircraft Assembly" Sensors 20, no. 18: 5161. https://doi.org/10.3390/s20185161

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