His research interests include cognitive, medical and sensor-based robotics, multi-agent systems, data fusion, adaptive systems, multimedia information retrieval, model-driven development of embedded systems with applications to automotive software and electric transportation, as well as simulation systems for robotics and traffic. In these fields, he has published over 600 technical papers and guest-edited international journals. He has participated (and has coordinated) several large scale national collaborative research projects (funded by the EU's DG Research, the DFG, the German Ministries for Economy Affairs and of Education and Research, the DAAD, the Ministry for Research of the state of North-Rhine-Westphalia).