Modeling and optimal control of electric machines with redundant stator windings

A fault of an electric machine can yield a potentially dangerous behavior of the overall system in certain applications. In this research projects, methods for the fault detection and the fault-tolerant operation of permanent magnet synchronous machines are developed. Read more →

Modeling and control of injection molding machines

Injection molding is the most prominent way to produce components made of plastics. In this research project, control strategies are developed for the optimal operation of injection molding machines. Read more →

Modeling and optimal control of permanent magnet synchronous motors

Permanent magnet synchronous machines (PMSM) are frequently used in industrial applications as e.g. robotics. This research project is concerned with the optimal control of PMSM, where magnetic saturation and non-sinusoidal field characteristics are systematically taken into account. Read more →

Modeling and control of hydraulic drive systems

Hydraulic drive systems are frequently used in industrial applications due to their high power density, small size and small weight. In this research project, model-predictive control strategies are developed and tested for different hydraulic drive systems. Read more →

Control of pumped storage power plants

To compensate the fluctions of the energy generation and consumption in electrical networks, pumped storage power plants are frequently utilized. These power plants are essential for the stabilization of electrical distribution networks. This research project investigates the efficient mathematical description, the optimal operation and the development of control and observer strategies. Read more →

Electrorheological fluids 2007 - 2011

Electrorheological Fluids (ERF) allow to directly influence their rheological properties by means of an electric field. In this research project, the application of ERF in valves, semi-active suspension systems and shock absorbers was examined. Read more →

Active camera stabilization platform 2010 - 2014

Stabilizing the orientation of the camera is an important task in filming dynamic scenes in movie or tv productions. This project considered a new active camera stabilization platform developed by qinematiq. The project included the system design, the developement of an attitude estimation strategy and the design of a nonlinear attitude control strategy. Read more →

Mobile DRT VLF test system 2011 - 2015

Testing of high voltage cable is important to guarantee the reliabilty of electric distribution networks. This project considered the control of a test system, which utilizes high voltage with very low frequency (VLF). A main part of the project was the optimization of the system parameters in order to improve the overall closed loop behavior. The practical feasibility of the control and estimation strategies was proven by means of measurements on the real test system. Read more →

Nonlinear control and protection concepts for Smart Power ICs

Smart Power ICs are Power Switches with integrated control and protection functions for the switching of middle and high current loads in industrial and automotive applications. Due to customer specifications and electromagnetic compatibility requirements it is often desired to limit the current and voltage slew rate at the output terminal of Smart power ICs by minimizing the switching losses at the same time. Read more →

Soft landing strategies for electromagnetic fast-switching valves

This project is concerned with the development of a soft landing control strategy electromagnetic valves. The main goal is to guarantee time-optimal switching of the valves with minimal impact velocity of the plunger at the limit stops. Thus, the approach combines the benefits of fast response and low maintenance intervals. Read more →