5 papers
Physical Human-Robot Interaction: A Critical Review of Safety Constraints
Riccardo Zanella, Federico Califano, Stefano Stramigioli
This paper aims to provide a clear and rigorous understanding of commonly recognized safety constraints in physical human-robot interaction, particularly regarding ISO/TS 15066. We…
Model order reduction via Lie groups
Yannik P. Wotte, Patrick Buchfink, Silke Glas +2
Lie groups and their actions are ubiquitous in the description of physical systems, and we explore implications in the setting of model order reduction (MOR). We present a novel fr…
Symmetric Lyapunov Subcenter Manifolds for Periodic Regulation of Mechanical Systems
Yannik P. Wotte, Arne Sachtler, Alin Albu-Schäffer +3
Multi-body mechanical systems have rich internal dynamics, whose solutions can be exploited as energy-efficient control targets. Yet, solutions non-trivially depend on system param…
Lossless optimal transient control for rigid bodies in 3D space
Riccardo Zanella, Federico Califano, Antonio Franchi +1
In this letter, we propose a control scheme for rigid bodies designed to optimise transient behaviors. The search space for the optimal control input is parameterized to yield a pa…
The effect of control barrier functions on energy transfers in controlled physical systems
Federico Califano, Riccardo Zanella, Alessandro Macchelli +1
Using a port-Hamiltonian formalism, we show the qualitative and quantitative effect of safety-critical control implemented with control barrier functions (CBFs) on the power balanc…