Systems Theory and Automatic Control

Systems and Control Seminar Winter Semester 2017


Wireless control in signal processing and control engineering with energy harvesting and energy sharing.


Steffi Knorn
Assistant Professor Uppsala University

Time and Place

October 4, 2017 at 15:00, building G07-208


Wireless communication is expected to revolutionise modern control and signal processing applications. When information is transmitted wirelessly, information might be lost or substantially delayed. In order to ensure that control loops and signal processing algorithms function as expected, potential information losses or delays have to be accounted for. Wireless sensors also have to be powered to enable wireless information transfer, where the probability of the information being received without faults increases with the transmission energy and the wireless channel gain. For this, one promising option is to use energy harvesting as the power supply is potentially everlasting and independent of the power grid. However, harvested energies are usually stochastic and limited. Hence, how to allocate the harvested energy in an optimal fashion is an important task. This talk focusses on two applications of energy harvesting. First, optimal allocation of transmission and shared energies in a wireless sensor network is investigated. Then, results on optimal energy allocation in a closed control loop are presented.

Information about the Speaker

Steffi Knorn received her Dipl.I-ng. in 2008 from the University of Magdeburg, Germany, and her Ph.D. from the Hamilton Institute at the National University of Ireland Maynooth, Ireland, in 2013. In 2013 she was a research academic at the Centre for Complex Dynamic Systems and Control at the University of Newcastle, Australia. Since 2014 she is with the Signals and Systems group at Uppsala University, Sweden. Dr. Knorn's research interests include stability analysis and controller design for marginally stable two-dimensional systems, port-Hamiltonian systems, string stability and scalability of vehicle platoons, distributed control, multi-sensor estimation, and energy harvesting and energy sharing in wireless networks.

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