Decoupling in singular systems: a polynomial equation approach
Design of observer based compensators: The polynomial approach
Differential flatness and defect: an overview
We introduce flat systems, which are equivalent to linear ones via a special type of feedback called endogenous. Their physical properties are subsumed by a linearizing output and they might be regarded as providing another nonlinear extension of Kalman's controllability. The distance to flatness is measured by a non-negative integer, the defect. We utilize differential algebra which suits well to the fact that, in accordance with Willems' standpoint, flatness and defect are best defined without...
Discrete-time control systems on homogeneous spaces: partition property
Disturbance rejection by proportional and derivative output feedback