Michael Buchholz

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In this paper a nonlinear model for a heavy dry clutch system with concentric pneumatic actuation is proposed and validated with measurement data. On/off solenoid valves are used for controlling the air stream in and out of the actuator. The different challenges in modeling this system are addressed and discussed to succeed in deriving an appropriate(More)
The Zscan4 family of genes, encoding SCAN-domain and zinc finger-containing proteins, has been implicated in the control of early mammalian embryogenesis as well as the regulation of pluripotency and maintenance of genome integrity in mouse embryonic stem cells. However, many features of this enigmatic family of genes are poorly understood. Here we show(More)
— In this paper we propose an enhanced local control strategy for the control of discrete-time piecewise affine systems on full-dimensional polytopes. The control strategy is divided into a local control and a supervisory control problem. The local control problem is to reach and cross one selected facet of a polytope ensuring that the next sample of the(More)
In this paper we propose a new approach for the control of discrete-time piecewise affine hybrid systems on full-dimensional polytopes. The new strategy is divided into a local and a supervisory control problem. The local problem is to reach and cross one facet of a polytope ensuring that the next sample of the time-discrete trajectory is picked up in the(More)
A long life time and safe operation are important issues when polymer electrolyte membrane fuel cell (PEMFC) stacks are used as power supply in technical systems. Therefore, methods are needed to detect deviations from the chosen operating point before any damage to the stack or the environment occurs. In applications like vehicles, the fuel cell operation(More)
A lot of approaches are already published to solve software architecture deployment problems. Most of them are intended for academic use and assume that the software components can be deployed freely on the hardware components. But for an improvement of existing applications, non-functional constraints will have a high influence on the acceptance of the(More)
This study was conducted to analyze how male sexual offenders construct mental images of masculinity and femininity to provide insight into therapeutic treatment for such patients. Thematerial examined in this studywas comprised of 21 videotaped prison group therapy sessions in which the participating sexual offenders talked about their crimes and(More)