7 papers
Robust Time-Varying Control Barrier Functions with Sector-Bounded Nonlinearities
Felix Biertümpfel, Jungbae Chun, Peter Seiler
This paper presents a novel approach for ensuring safe operation of systems subject to input nonlinearities and time-varying safety constraints. We extend the time-varying barrier…
Method to Compute Pointing Displacement, Smear, and Jitter Covariances for Optical Payloads
Peter Seiler, Mark E. Pittelkau, Felix Biertümpfel
This paper presents a method to assess the pointing and image motion performance of optical payloads in the presence of image displacement (shift), smear, and jitter. The method as…
An Exact, Finite Dimensional Representation for Full-Block, Circle Criterion Multipliers
Felix Biertümpfel, Bin Hu, Geir Dullerud +1
This paper provides the first finite-dimensional characterization for the complete set of full-block, circle criterion multipliers. We consider the interconnection of a discrete-ti…
Tube-Based Model Predictive Control with Random Fourier Features for Nonlinear Systems
Ãkos M. Bokor, Tamás Dózsa, Felix Biertümpfel +1
This paper presents a computationally efficient approach for robust Model Predictive Control of nonlinear systems by combining Random Fourier Features with tube-based MPC. Tube-bas…
A Robust Periodic Controller for Spacecraft Attitude Tracking
Frederik Thiele, Felix Biertümpfel, Harald Pfifer
This paper presents a novel approach for robust periodic attitude control of satellites. Respecting the periodicity of the satellite dynamics in the synthesis allows to achieve con…
Control Synthesis Along Uncertain Trajectories Using Integral Quadratic Constraints
Felix Biertümpfel, Peter Seiler, Harald Pfifer
The paper presents a novel approach to synthesize robust controllers for nonlinear systems along perturbed trajectories. The approach linearizes the system with respect to a refere…