Abstract
This paper presents a new model-based fault detection and failure prediction framework for a class of multi-input and multi-output (MIMO) nonlinear distributed parameter systems (DPS) described by partial differential equations (PDE) with actuator and sensor faults. The fault functions cover both abrupt and incipient faults. A Luenberger type observer is used to monitor the health of the DPS as a detection observer on the basis of the nonlinear PDE representation of the system and by utilizing only the measured output vector. By taking the difference between measured and estimated outputs, a residual signal is generated for fault detection. If the detection residual exceeds a predefined threshold, a fault is claimed to be active. Once an actuator or a sensor fault is detected, an appropriate fault parameter update law is developed to learn the fault dynamics online with the help of an additional measurement. Later, an explicit formula is introduced to estimate the time-to-failure in the presence of an actuator/sensor fault by utilizing the limiting values of the output vector along with the estimated fault parameter vector. Eventually, the effectiveness of the proposed detection and prediction framework is demonstrated on a nonlinear process.
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Hasan Ferdowsi received his Ph.D. degree in electrical engineering at Missouri University of Science and Technology in December 2013. He is currently an Assistant Professor of Electrical Engineering at Northern Illinois University (NIU), where he has been a faculty since 2017. He is the director of Autonomous Robotics and Controls (ARC) lab at NIU and research interests include fault diagnosis and fault-tolerant control, adaptive control and estimation, distributed systems, autonomous vehicles, and robotics.
Jia Cai received her Ph.D. degree in electrical engineering at Missouri University of Science and Technology in 2016. She worked as an Electrical Engineer at Predictronics Corp. between 2017 and 2019, and has been a Software Engineer at Microsoft since 2019. Her research interests include adaptive control, fault diagnosis and prognosis as well as mathematical optimization.
Sarangapani Jagannathan is a Rutledge-Emerson Distinguished Professor of the Electrical and Computer Engineering at the Missouri University of Science and Technology. He was a Site Director for the NSF Industry/University Cooperative Research Center on Intelligent Maintenance Systems for 13 years. His research interests include learning and adaptation, neural network control, secure human-cyber-physical systems, prognostics, and autonomous systems/robotics.
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Ferdowsi, H., Cai, J. & Jagannathan, S. Actuator and Sensor Fault Detection and Failure Prediction for Systems with Multi-dimensional Nonlinear Partial Differential Equations. Int. J. Control Autom. Syst. 20, 789–802 (2022). https://doi.org/10.1007/s12555-019-0622-3
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DOI: https://doi.org/10.1007/s12555-019-0622-3