Active Hybrid Fault Tolerant Flight Control of an UAV under Control Surface Damage

2020-01-01
Ergocmen, Burak
Yavrucuk, İlkay
Control surface or actuator faults or failures in any flight lead to system-induced loss of control in-flight (LOC-I) and the result can be fatal. In this paper, to prevent these accidents, an active fault-tolerant flight control (FTFC) is proposed. The system consists of the nonlinear control technique, state-dependent Riccati equation (SDRE) and a linear controller technique. In this paper, control surface damage is studied. To prevent LOC-I, a Reconfiguration Mechanism (RM) sends signals in real-time to the SDRE controller to slow down or accelerate the control surface movement, reconfigures controller with respect to damage or changes to Linear Quadratic Regulator/tracking (LQR/LQT) control due to uncontrollability and unobservability problem. Comparative figures are given to illustrate the effectiveness of the hybrid (SDRE/LQR-LQT+PID) controller architecture.
American Control Conference (ACC)

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Citation Formats
B. Ergocmen and İ. Yavrucuk, “Active Hybrid Fault Tolerant Flight Control of an UAV under Control Surface Damage,” presented at the American Control Conference (ACC), Colorado, Amerika Birleşik Devletleri, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/89315.