A Damage Identification Method Based on Minimum Mean Square Error Estimation for Wind Tunnel Flexible Plate Condition Monitoring System
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Published:2023-06-12
Issue:6
Volume:11
Page:1791
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ISSN:2227-9717
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Container-title:Processes
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language:en
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Short-container-title:Processes
Author:
Yun Kang12ORCID, Liu Mingyao1, Wang Jingliang1, Li Cong1
Affiliation:
1. School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China 2. Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, College of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
Abstract
In this paper, we propose a damage identification method based on minimum mean square error estimation for a wind tunnel flexible plate condition monitoring system. Critical structural members of important equipment are large in size, and the measurement systems used to monitor their condition are often complex. The proposed damage identification method is based on the minimum mean squared error estimator and the generalized likelihood ratio test. It introduced activation function to generate the standard deviation of the data, which can then simulate the sensor output. A single sensor damage only affects a single dimension of the output data matrix of the measurement system. However, structural damage affects the output of multiple sensors. The damage identification method proposed in this paper can not only distinguish the sensor damage from the structure damage, but also locate the damaged sensor or structure damage location. This method can identify the measurement system output anomalies caused by structural damage and locate the approximate location of the damage. It can be applied to damage identification of important structural members such as flexible wind tunnel plates. The damage identification method proposed in this paper is of great significance for damage identification and localization of key components and sensor systems.
Funder
National Natural Science Foundation of China
Subject
Process Chemistry and Technology,Chemical Engineering (miscellaneous),Bioengineering
Reference42 articles.
1. A new economic flexible nozzle for supersonic wind tunnels;Erdmann;J. Aircr.,1971 2. Erickson, L.L., Kassner, D.L., and Guist, L.R. (1979, January 4–6). Investigation of Flexible Nozzle Wall-Flutter Incidents in the NASA-Ames Research Center 11- by 11-foot Transonic Wind Tunnel. Proceedings of the 20th Structures, Structural Dynamics, and Materials Conference, St. Louis, MO, USA. 3. Herron, R., Stich, P., Price, E., and Whoric, J. (1996, January 17–20). Further Improvements in Cost Effectiveness of Wind Tunnel Testing at PWT. Proceedings of the Advanced Measurement and Ground Testing Conference, New Orleans, LA, USA. 4. Peters, W., Lawrence, W., Mills, M., and Milam, W. (1999, January 11–14). Cycle time reduction strategies and improvements in transonic testing in the AEDC Wind Tunnel 16T. Proceedings of the 37th Aerospace Sciences Meeting and Exhibit, Reno, NV, USA. 5. Wind-resistant structural optimization of supertall buildings based on high-frequency force balance wind tunnel experiment;Xu;Eng. Struct.,2021
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