Otto Rösch

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Force feedback from a mobile robot to a remote control enlarges the sensoric capabilities of standard teleoperation approaches. In existing applications images and sensor data are displayed to the remote user. With additional force feedback, not only visual but also haptic interfaces are used to provide input to the teleoperator in order to improve remote(More)
We study (inverse) photoemission from systems with strong coupling of doped carriers to phonons. Using an adiabatic approximation, we develop a method for calculating spectra. This method is particularly simple for systems where the electron-phonon coupling can be neglected in the initial state, e.g., the undoped t-J model. The theory then naturally(More)
In this paper, upper bounds for time-varying delays in the real-time control of a lab helicopter in the sense of practical stability analysis are derived. Sub-optimal controller parameters for this non-linear plant with a given maximum time-delay are calculated with the help of Lyapunov-Razumikhin method using LMIs (Linear Matrix Inequalities). These(More)
We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calculate the electron-phonon coupling and find that it is strong enough to give self-trapped polarons. We develop an efficient method for calculating ARPES spectra in undoped(More)
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