A longitudinal flight control law based on robust MPC and H2 methods to accommodate sensor loss in the RECONFIGURE benchmark
Hartley, E. N.
Maciejowski, J. M.
9th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes
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Hartley, E. N., & Maciejowski, J. M. (2015). A longitudinal flight control law based on robust MPC and H2 methods to accommodate sensor loss in the RECONFIGURE benchmark. 9th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, 48 (21), 1000-1005. https://doi.org/10.1016/j.ifacol.2015.09.657
This is the author accepted manuscript. The final version is available from Elsevier via http://dx.doi.org/10.1016/j.ifacol.2015.09.657
The feedback gains in state-of-the-art flight control laws for commercial aircraft are scheduled as a function of values such as airspeed, mass, and centre of gravity. If estimates of these are lost due to multiple simultaneous sensor failures, it is necessary for the pilot to either directly command control surface positions, or to revert to an alternative control law. This work develops a robust backup load-factor tracking control law, that does not depend on these parameters, based on application of theory from robust MPC and H2 control. First the methods are applied with loss only of airdata, and subsequently also with loss of mass and CoG estimates. Local linear analysis indicates satisfactory performance over a wide range of operating points. Finally, the resulting control laws are demonstrated on the nonlinear RECONFIGURE benchmark, which is derived from Airbus's high delity, industrially-validated simulator, OSMA.
Optimal control, Robust control,, Aircraft control, Fault-tolerant control
External DOI: https://doi.org/10.1016/j.ifacol.2015.09.657
This record's URL: http://www.repository.cam.ac.uk/handle/1810/247983