]> 2026-07-15T03:35:46+00:00 Flat systems, equivalence and trajectory generation 0 en Flat systems, an important subclass of nonlinear control systems introduced via differential-algebraic methods, are defined in a differential geometric framework. We utilize the infinite dimensional geometry developed by Vinogradov and coworkers: a control system is a diffiety, or more precisely, an ordinary diffiety, i.e. a smooth infinite-dimensional manifold equipped with a privileged vector field. After recalling the definition of a Lie-Backlund mapping, we say that two systems are equivalent if they are related by a Lie-Backlund isomorphism. Flat systems are those systems which are equivalent to a controllable linear one. The interest of such an abstract setting relies mainly on the fact that the above system equivalence is interpreted in terms of endogenous dynamic feedback. The presentation is as elementary as possible and illustrated by the VTOL aircraft. Phillipe Martin, Richard Murray, Pierre Rouchon 2003d CDS Technical Report mmr03-cds Technical Report 2016-05-15T06:18:44Z 2457523.7630093 Flat systems, equivalence and trajectory generation Title 102 en Title