Active Fault Tolerant Flight Control System Design - A UAV Case Study

Fault tolerance is achieved through multiply redundant hardware systems in large civil aircraft. This means of achieving fault tolerance is infeasible for small compact unmanned aerial vehicles. In this paper we apply a fault tolerant control system which exploits analytical redundancy rather than hardware redundancy to an actual UAV model currently in operation via model-in-the-loop simulation. The fault tolerant control system comprises a nonlinear model predictive controller integrated with an unscented Kalman filter for fault detection and identification. The results show that our fault tolerant control system design is able to identify engine failure within seconds of fault occurrence and distribute control authority to the healthy actuators to maintain safe flight.

[1]  Barnes W. McCormick,et al.  Aerodynamics, Aeronautics and Flight Mechanics , 1979 .

[2]  Jan M. Maciejowski.  Fault-tolerant aspects of MPC , 1999 .

[3]  Ben Motazed,et al.  Application of fault-tolerant controls to UAVs , 1996, Defense, Security, and Sensing.

[4]  Paul Riseborough,et al.  Active Fault Tolerant Flight Control System Design , 2016 .

[5]  Mustapha Ouladsine,et al.  Actuators Fault Diagnosis and Tolerant Control for an Unmanned Aerial Vehicle , 2007, 2007 IEEE International Conference on Control Applications.

[6]  Sai-Ming Li,et al.  On-line failure detection and identification (FDI) and adaptive reconfigurable control (ARC) in aerospace applications , 2001, Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148).

[7]  Mustapha Ouladsine,et al.  A Fault Tolerant Control strategy for an unmanned aerial vehicle based on a Sequential Quadratic Programming algorithm , 2008, 2008 47th IEEE Conference on Decision and Control.

[8]  M. M. Kale,et al.  Robust and stabilized MPC formulations for fault tolerant and reconfigurable flight control , 2004, Proceedings of the 2004 IEEE International Symposium on Intelligent Control, 2004..

[9]  Wei Wei,et al.  QFT based robust/fault tolerant flight control design for a remote pilotless vehicle , 1999, Proceedings of the 1999 IEEE International Conference on Control Applications (Cat. No.99CH36328).

[10]  Kuldip S. Rattan,et al.  A fuzzy logic supervisor for reconfigurable flight control systems , 1994, Proceedings of National Aerospace and Electronics Conference (NAECON'94).

[11]  Sesh Commuri,et al.  Unmanned Aerial Vehicles operational requirements and fault-tolerant robust control in level flight , 2009, 2009 17th Mediterranean Conference on Control and Automation.

[12]  Jovan D. Boskovic,et al.  A multiple model predictive scheme for fault-tolerant flight control design , 1998, Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171).

[13]  Paul Riseborough,et al.  Fault detection and identification—A filter investigation , 2016, 1609.02407.

[14]  Jie Chen,et al.  An LMI approach to fault-tolerant control of uncertain systems , 1998, Proceedings of the 1998 IEEE International Symposium on Intelligent Control (ISIC) held jointly with IEEE International Symposium on Computational Intelligence in Robotics and Automation (CIRA) Intell.

[15]  Peter Vörsmann,et al.  Fault-tolerant nonlinear adaptive flight control using sliding mode online learning , 2012, Neural Networks.

[16]  Robin Hill,et al.  Designing a Nonlinear Model Predictive Controller for Fault Tolerant Flight Control , 2016 .