Gameplay filters: Robust zero-shot safety through adversarial imagination

DP Nguyen, KC Hsu, W Yu, J Tan… - 8th Annual Conference …, 2024 - openreview.net
Despite the impressive recent advances in learning-based robot control, ensuring
robustness to out-of-distribution conditions remains an open challenge. Safety filters can, in …

Magics: Adversarial rl with minimax actors guided by implicit critic stackelberg for convergent neural synthesis of robot safety

J Wang, H Hu, DP Nguyen, JF Fisac - arXiv preprint arXiv:2409.13867, 2024 - arxiv.org
While robust optimal control theory provides a rigorous framework to compute robot control
policies that are provably safe, it struggles to scale to high-dimensional problems, leading to …

Robust successor and precursor sets of hybrid systems using hybrid zonotopes

JA Siefert, TJ Bird, JP Koeln, N Jain… - IEEE Control Systems …, 2022 - ieeexplore.ieee.org
This letter presents identities for calculating robust successor and precursor sets of discrete-
time linear hybrid systems. The proposed technique relies on generating a set containing all …

Successor sets of discrete-time nonlinear systems using hybrid zonotopes

JA Siefert, TJ Bird, JP Koeln, N Jain… - 2023 American …, 2023 - ieeexplore.ieee.org
This paper presents identities for calculating over-approximated successor sets of discrete-
time nonlinear systems using hybrid zonotopes. The proposed technique extends the state …

Decision boundary learning for safe vision-based navigation via Hamilton-Jacobi reachability analysis and support vector machine

T Toufighi, M Bui, R Shrestha… - 6th Annual Learning for …, 2024 - proceedings.mlr.press
We develop a self-supervised learning method that can predict safe and unsafe high-level
waypoints for robot navigation in the form of a decision boundary given solely a RGB image …

Gameplay Filters: Safe Robot Walking through Adversarial Imagination

DP Nguyen, KC Hsu, W Yu, J Tan, JF Fisac - arXiv preprint arXiv …, 2024 - arxiv.org
Ensuring the safe operation of legged robots in uncertain, novel environments is crucial to
their widespread adoption. Despite recent advances in safety filters that can keep arbitrary …

Reachability Analysis Using Hybrid Zonotopes and Functional Decomposition

JA Siefert, TJ Bird, AF Thompson, JJ Glunt… - arXiv preprint arXiv …, 2023 - arxiv.org
This paper proposes methods for reachability analysis of nonlinear systems in both open
loop and closed loop with advanced controllers. The methods combine hybrid zonotopes, a …

Reachability Analysis of Nonlinear and Hybrid Systems Using Hybrid Zonotopes and Graphs of Functions

JA Siefert - 2024 - search.proquest.com
Reachable sets are used to evaluate system performance and ensure constraint satisfaction
in safety-critical applications while accounting for the effects of input, disturbance, and …

Model Predictive Geofencing for Vehicle Containment

S Thorén, L Wikander, V Jarlow… - … Conference on Systems …, 2024 - diva-portal.org
As automated vehicle technology advances, measures for their safe containment become
increasingly important. To this end, geofencing is a prominent alternative as a fundamental …