Research at the Institute of General Electrical Engineering
Numerical simulation of electromagnetic fields
The design of electro-technical components has reached its limits, which on the one hand, due to the complexity of the tasks involved, require us to go beyond rules of thumb and experience, and on the other hand, for reasons of cost, allow metrological investigations only in the advanced design phase, and often even for reasons of rapid competition, prototypes are dispensed with altogether. Since analytical methods would usually only be applicable to concrete applications under impermissible simplifications, numerical methods for the simulation of electromagnetic fields have become of central importance in electrical engineering. With numerical simulation, even complicated application problems with many details can be handled very well, so that computer-aided simulation has become an indispensable tool in the design of electromagnetic components.
The focus of our research group is on the development and investigation of new algorithms and numerical solution methods, the parallelization of algorithms and last but not least the application of simulation methods to concrete application problems, especially in the physics of particle accelerators and biomedical technology.
Sensors represent the weighing element for the acquisition of physical, chemical, biological and other variables and their conversion into preferably electrical or optical signals that can be processed further. On the one hand, it is not possible to recognise system parameters and states in technical and biological systems without high-performance, adapted sensor technology, and on the other hand, targeted intervention (e. g. regulation or control) is only possible to a limited extent or not at all.
The research at the Chair of Technical Electronics and Sensor Technology deals mainly with the so-called field scanning sensors:
Topics for the application of magnetic and magnetic-inductive sensors, optical sensors, acoustic sensors and autonomous measuring systems for water monitoring are the focus of the investigations. In all sensor investigations, mathematical modeling and simulation of the sensors plays a decisive role in optimizing their properties alongside the design of special embedded hardware interfaces (electromagnetic fields): FEM, BEM, light propagation in media: Monte Carlo simulation). In combination with modern methods of digital sensor signal processing including pattern recognition methods, new sensors and sensor systems are created.
The research work is carried out in 5 main areas:
- Research Group Magnetic and Inductive Sensors,
research group leader: Dr.-Ing. Hendrik Krüger
- Research Group Optical Spectroscopy and Gas Sensors,
research group leader: Dr.-Ing. Martin Degner
- Research Group Non-invasive Medical Sensor Technology - Photophlethysmography,
research group leader: Dr.-Ing. Jens Kraitl
- Research Group Medical Sensor Technology and Technical Electronics,
research group leader: Dr. Ulrich Timm
- Research Group Maritime Sensors,
research group leader: Dr.-Ing. Rainer Jaskulke
In addition, the Maritime Sensor Technology research group (head of the research group Dr. Rainer Jaskulke) investigates and tests sensor systems for environmental metrology, in particular for the maritime sector. The focus is on the development, realization and testing of complex measuring systems for hydrological and meteorological parameters such as temperature, flow, conductivity and oxygen. The special conditions of use in the coastal area of the Baltic Sea of Mecklenburg-Western Pomerania are taken into account.
The acoustic flow and flow sensor technology is represented by Dr. Axel Rennau.
In close cooperation with FLEXIM GmbH, Berlin the work programme included basic investigations into interference-free acoustic flow measurement using the transit time difference method and the Doppler method in pipes with externally mounted transducer heads (clamp-on measuring technology). This also included investigations of the acoustic processes at flat and curved border crossings and layers of different media, the exact determination of the measuring geometry by means of calculation methods of sound propagation in the spatial frequency range as well as the metrological determination and theoretical modelling of disturbed flow profiles in particular.