Search Results for author: Kim P. Wabersich

Found 13 papers, 1 papers with code

Predictive stability filters for nonlinear dynamical systems affected by disturbances

no code implementations20 Jan 2024 Alexandre Didier, Andrea Zanelli, Kim P. Wabersich, Melanie N. Zeilinger

Predictive safety filters provide a way of projecting potentially unsafe inputs, proposed, e. g. by a human or learning-based controller, onto the set of inputs that guarantee recursive state and input constraint satisfaction by leveraging model predictive control techniques.

Model Predictive Control

LQG for Constrained Linear Systems: Indirect Feedback Stochastic MPC with Kalman Filtering

no code implementations1 Dec 2022 Simon Muntwiler, Kim P. Wabersich, Robert Miklos, Melanie N. Zeilinger

We present an output feedback stochastic model predictive control (SMPC) approach for linear systems subject to Gaussian disturbances and measurement noise and probabilistic constraints on system states and inputs.

Model Predictive Control

Approximate Predictive Control Barrier Functions using Neural Networks: A Computationally Cheap and Permissive Safety Filter

no code implementations28 Nov 2022 Alexandre Didier, Robin C. Jacobs, Jerome Sieber, Kim P. Wabersich, Melanie N. Zeilinger

A predictive control barrier function (PCBF) based safety filter is a modular framework to verify safety of a control input by predicting a future trajectory.

Autonomous Driving

Adaptive Model Predictive Safety Certification for Learning-based Control -- Extended Version

no code implementations27 Sep 2021 Alexandre Didier, Kim P. Wabersich, Melanie N. Zeilinger

By continuously connecting the current system state with a safe terminal set using a robust tube, safety can be ensured.

Learning-based Moving Horizon Estimation through Differentiable Convex Optimization Layers

1 code implementation8 Sep 2021 Simon Muntwiler, Kim P. Wabersich, Melanie N. Zeilinger

In a numerical example of estimating temperatures of a group of manufacturing machines, we show the performance of tuning the unknown system parameters and the benefits of integrating physical state constraints in the MHE formulation.

Predictive control barrier functions: Enhanced safety mechanisms for learning-based control

no code implementations21 May 2021 Kim P. Wabersich, Melanie N. Zeilinger

While learning-based control techniques often outperform classical controller designs, safety requirements limit the acceptance of such methods in many applications.

Cautious Bayesian MPC: Regret Analysis and Bounds on the Number of Unsafe Learning Episodes

no code implementations5 Jun 2020 Kim P. Wabersich, Melanie N. Zeilinger

Furthermore, it is shown that the proposed constraint tightening implies a bound on the expected number of unsafe learning episodes in the linear and nonlinear case using a soft-constrained MPC formulation.

Model Predictive Control

Data-Driven Distributed Stochastic Model Predictive Control with Closed-Loop Chance Constraint Satisfaction

no code implementations6 Apr 2020 Simon Muntwiler, Kim P. Wabersich, Lukas Hewing, Melanie N. Zeilinger

Distributed model predictive control methods for uncertain systems often suffer from considerable conservatism and can tolerate only small uncertainties due to the use of robust formulations that are amenable to distributed design and optimization methods.

Model Predictive Control

Distributed Model Predictive Safety Certification for Learning-based Control

no code implementations5 Nov 2019 Simon Muntwiler, Kim P. Wabersich, Andrea Carron, Melanie N. Zeilinger

While distributed algorithms provide advantages for the control of complex large-scale systems by requiring a lower local computational load and less local memory, it is a challenging task to design high-performance distributed control policies.

Model Predictive Control

A predictive safety filter for learning-based control of constrained nonlinear dynamical systems

no code implementations13 Dec 2018 Kim P. Wabersich, Melanie N. Zeilinger

In this paper, we address this problem for nonlinear systems with continuous state and input spaces by introducing a predictive safety filter, which is able to turn a constrained dynamical system into an unconstrained safe system and to which any RL algorithm can be applied `out-of-the-box'.

Model Predictive Control Reinforcement Learning (RL) +1

Linear model predictive safety certification for learning-based control

no code implementations22 Mar 2018 Kim P. Wabersich, Melanie N. Zeilinger

The MPSC scheme can be used in order to expand any potentially conservative set of safe states for learning and we prove an iterative technique for enlarging the safe set.

Scalable synthesis of safety certificates from data with application to learning-based control

no code implementations30 Nov 2017 Kim P. Wabersich, Melanie N. Zeilinger

The control of complex systems faces a trade-off between high performance and safety guarantees, which in particular restricts the application of learning-based methods to safety-critical systems.

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