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Online Control Reconfiguration for Manufacturing Systems
Published in Javier Campos, Carla Seatzu, Xiaolan Xie, in Manufacturing, 2018
Figure23.1 shows the main constituents of a fault-tolerant control loop. At the control level, the plant Np reacts to the control command vp = wc with an output wp and switches from state zp to state z′p. The controller Ac generates the next control output to steer the plant as required by given specifications. The input and output events of the plant are used at the supervision level for diagnosis and control reconfiguration. The control reconfiguration consists of modifying the controller adequately such that it can still guarantee the achievement of the specification by the control loop.
Real-Time Vision-Based Aircraft Vertical Tail Damage Detection and Parameter Estimation
Published in IETE Journal of Research, 2022
Kishan S. Chowhan, Hemendra Arya, Vijay V. Patel, Girish S. Deodhare
In this paper, the authors have successfully arrived at a simple and novel method of using available vision-based techniques to achieve reliable, fast, and accurate detection of structural faults. A fusion of two different methods to perform a complete control reconfiguration process, i.e. detect the fault, identify the percentage of damage, and generate control reconfiguration parameters, has been demonstrated. It may be noted that several methods of system/parameter identification exist in the literature that are also used to detect and identify the fault; however, being numerical processes, they require enormous computation time and by the time identification happens very less time is available for recovery of aircraft. Through this paper, an attempt is made by authors to explain that the vision-based method is computationally efficient and much faster, thereby providing enough time for recovering the aircraft.