Gernot Schullerus

Learn More
Max–plus–linear systems efficiently describe the dynamics of event time sequences of a class of discrete event systems. The present contribution addresses the problem of designing adequate input signals for state space identification of max–plus–linear systems. It is shown that the input signal design problem can be rewritten as a set of upper bound(More)
The present contribution addresses the problem of designing an adequate persistent excitation for state space identification of max–plus–linear systems. The persistent excitation is designed using the same techniques that have recently been developed for model predictive control for max–plus–linear systems. The application of this method for input signal(More)
Model predictive control (MPC) is a popular controller design technique in the process industry. Conventional MPC uses linear or nonlinear discrete-time models. Recently, we have extended MPC to a class of discrete event systems that can be described by a model that is “linear” in the max-plus algebra. In our previous work we have considered MPC for the(More)
This paper investigates the relations between timed event graphs and timed automata that describe discrete–event systems subject to faults. An algorithm is presented for transforming a timed event graph into an equivalent timed automaton. The relations among the models of the faulty systems provides the basis for comparing diagnostic methods that have been(More)
Optimal control of magnetizing current for minimizing induction motor power losses during load torque step change was developed. Original problem was slightly simplified and exactly optimal control was obtained for modified formulation. Obtained strategy has feedback form and is exactly optimal for ideal speed controller performance and absence of(More)
The paper presents a new approach for model–based diagnosis for hierarchically structured discrete–event systems. The efficiency of this method results from the fact that the complexity of the diagnostic task is reduced by first detecting and identifying a faulty module using a coarse model of the system on a high level of abstraction and subsequently(More)
In the article the problem of output setpoint tracking for affine non-linear system is considered. Presented approach combines state feedback linearization and homotopy numerical continuation in subspaces of phase space where feedback linearization fails. The method of numerical parameter continuation for solving systems of nonlinear equations is(More)
This paper presents a laboratory experiment integrating the fields of electronics design, power electronics and drive control. The aim of this experiment is first to illustrate the need for a deep knowledge and the challenges in power electronics and its applications, in this particular case for drive control. The different tasks in this experiment are(More)
  • 1