Towards Certifiable Advanced Flight Control Systems, A Sensor Based Backstepping Approach

Towards Certifiable Advanced Flight Control Systems, A Sensor Based Backstepping Approach

Falkena, W.
Van Oort, E.R.
Chu, Q.P.

Aerospace Engineering

Control & Operations

2011-08-08

This paper uses singular perturbation theory in order to design a backstepping control system. Earlier applications using singular perturbation theory for control of non-affine systems exist, but here the focus is shifted to uncertain systems. Dealing with uncertainties in this way could be a major benefit for certification of advanced control laws. The reason for this is twofold. First, the backstepping construct, using Lyapunov functions, guarantees the stability of the controlled system. Second, by using measurements of the state derivatives rather than relying on perfect knowledge of the system, a major drawback of backstepping is removed: the need for adaptation to uncertain parameters or unknown model structure. As this method bears resemblance to sensor based nonlinear dynamic inversion, the control law developed in this paper will be referred to as sensor based backstepping. Preliminary results for systems with uncertainty and sensor noise look very promising and future investigation into the effects of time-delays is needed.

http://resolver.tudelft.nl/uuid:286940aa-e128-4b63-97ff-1adadff40b98

https://doi.org/10.2514/6.2011-6482

American Institute of Aeronautics and Astronautics (AIAA)

978-1-60086-952-5

AIAA Guidance, Navigation, and Control Conference, Portland, USA, 8-11 August 2011; AIAA 2011-6482

Institutional Repository

conference paper

© 2011 Falkena, W.