Non-flat systems
Flat control system

Although the flatness property is very interesting for system control, it turns out that some system models do not possess it. Indeed, in some cases (excluding, of course, non-controllable models), components of the state are not accessible or expressible using a number, given by the number of controls, of variables and their derivatives. Despite this, special techniques can be used to apply the concepts of platitude , including model simplification and...