Abstract
Owing to the fact that it is difficult to find the incipient fault and it is hard to deal with the disturbance, an extended state observer (ESO), which is based on the linear time invariant system is designed and analyzed. This method can effectively separate incipient fault as a new state variable from the disturbance. By using coordinate transformations, the original system is decoupled into two subsystems. Especially, an adaptive observer of faulty system is designed for the one subsystem with the incipient fault but not relevant to the disturbance, and an extended state observer (ESO) based on active disturbance rejection control (ADRC) is designed for the other one which not only has the disturbance but also the incipient fault. Two simulation results are presented to show the effectiveness of the presented methods.
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Recommended by Associate Editor Soohee Han under the direction of Editor Jessie (Ju H.) Park. This work was supported by the National Natural Science Foundation of China under Grants 61573076, 61663008; the Scientific Research Foundation for the Returned Overseas Chinese Scholars under Grant 2015-49; the Program for Excellent Talents of Chongqing Higher School of China under Grant 2014-18; Science and Technology Research Project of Chongqing Municipal Eduction Commission of China under Grants KJ1705139 and KJZD-K201800701; the Program of Chongqing innovation and entrepreneurship for Returned Overseas Scholars of China under Grant cx2018110.
Xingxing Hua was born in 1994. She received her B.S. degree in Mathematics and Applied Mathematics from Chongqing University Of Education, Chongqing, China in 2017. Since 2017, she has been a Master Graduate Student with the College of Mathematical and Statistics, Chongqing Jiaotong University, Chongqing, China. Her research interests include fault diagnosis.
Darong Huang was born in 1978. He received his B.S. degree in Applied Mathematics from Hubei National Institute, Hubei, China in 2000, an M.S. degree in Applied Mathematics from Liaoning University, Liaoning, China, in 2003 and a Ph.D. degree in control theory and control engineering from Chongqing University, Chongqing, China, in 2006. Since 2011, he has been a Professor with the College of Information Science and Engineering, Chongqing Jiaotong University, Chongqing, China. His research interests include fault diagnosis and fault-tolerant control of dynamic systems, analysis and design of complex systems, big data analysis of transport systems, reliability engineering and so on.
Shenghui Guo received his Ph.D. degree in Control Theory and Control Engineering from Tongji University, China, in 2016. He is currently an associate professor with the College of Electronics and Information Engineering, Suzhou University of Science and Technology, China, and also a post-doctor with the College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, China. His research interests include observer design, model-based fault detection, and fault-tolerant control.
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Hua, X., Huang, D. & Guo, S. Extended State Observer Based on ADRC of Linear System with Incipient Fault. Int. J. Control Autom. Syst. 18, 1425–1434 (2020). https://doi.org/10.1007/s12555-019-0052-2
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DOI: https://doi.org/10.1007/s12555-019-0052-2