23 citations · 111 across the 26 of their papers we have counts for
7 papers · 1 filter
A Trajectory-Based Approach to Discrete-Time Flatness
Johannes Diwold, Bernd Kolar, Markus Schöberl
For discrete-time systems, flatness is usually defined by replacing the time-derivatives of the well-known continuous-time definition by forward-shifts. With this definition, the c…
A Finite Test for the Linearizability of Two-Input Systems by a Two-Dimensional Endogenous Dynamic Feedback
Conrad Gstöttner, Bernd Kolar, Markus Schöberl
We propose an algorithmic test to check whether a two-input system is linearizable by an endogenous dynamic feedback with a dimension of at most two. This test furthermore provides…
A Structurally Flat Triangular Form Based on the Extended Chained Form
Conrad Gstöttner, Bernd Kolar, Markus Schöberl
In this paper, we present a structurally flat triangular form which is based on the extended chained form. We provide a complete geometric characterization of the proposed triangul…
Linearized Controllability Analysis of Semilinear Partial Differential Equations
Bernd Kolar, Markus Schöberl
It is well-known that the controllability of finite-dimensional nonlinear systems can be established by showing the controllability of the linearized system. However, this classica…
Stability Analysis of the Observer Error of an In-Domain Actuated Vibrating String
Tobias Malzer, Hubert Rams, Bernd Kolar +1
In this paper, the behaviour of the observer error of an in-domain actuated vibrating string, where the observer system has been designed based on energy considerations exploiting…
A Normal Form for Two-Input Flat Nonlinear Discrete-Time Systems
Johannes Diwold, Bernd Kolar, Markus Schöberl
We show that every flat nonlinear discrete-time system with two inputs can be transformed into a structurally flat normal form by state- and input transformations. This normal form…