Safety-critical control with input delay in dynamic environment

TG Molnar, AK Kiss, AD Ames… - IEEE transactions on …, 2022 - ieeexplore.ieee.org
Endowing nonlinear systems with safe behavior is increasingly important in modern control.
This task is particularly challenging for real-life control systems that operate in dynamically …

Control barrier functionals: Safety‐critical control for time delay systems

AK Kiss, TG Molnar, AD Ames… - International Journal of …, 2023 - Wiley Online Library
This work presents a theoretical framework for the safety‐critical control of time delay
systems. The theory of control barrier functions, that provides formal safety guarantees for …

Input-to-state safety with input delay in longitudinal vehicle control

TG Molnar, A Alan, AK Kiss, AD Ames, G Orosz - IFAC-PapersOnLine, 2022 - Elsevier
Safe longitudinal control is discussed for a connected automated truck traveling behind a
preceding connected vehicle. A controller is proposed based on control barrier function …

Certifying safety for nonlinear time delay systems via safety functionals: a discretization based approach

AK Kiss, TG Molnar, D Bachrathy… - 2021 American …, 2021 - ieeexplore.ieee.org
In this paper, we consider the safety of continuous time control systems with input delays.
Safety functionals are constructed that define safety sets in the infinite-dimensional state …

Preview Control Barrier Functions for Linear Continuous-Time Systems with Previewable Disturbances

T Pati, S Hwang, SZ Yong - 2023 European Control Conference …, 2023 - ieeexplore.ieee.org
Many (semi-) autonomous systems are equipped with mechanisms that provide a window of
projecting into the future. Predictions/projections of future exogenous inputs or disturbances …

ESO-Based Safety-Critical Control for Robotic Systems With Unmeasured Velocity and Input Delay

S Zhang, DH Zhai, J Lin, Y Xiong… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
For practical robots, obtaining precise dynamic models and states is a challenge, which
presents difficulty in achieving safety-critical control. When faced with an uncertain dynamic …

Quantifying the Value of Preview Information for Safety Control

Z Liu, N Ozay - arXiv preprint arXiv:2303.10660, 2023 - arxiv.org
Safety-critical systems, such as autonomous vehicles, often incorporate perception modules
that can anticipate upcoming disturbances to system dynamics, expecting that such preview …

On the value of preview information for safety control

Z Liu, N Ozay - 2021 American Control Conference (ACC), 2021 - ieeexplore.ieee.org
Incorporating predictions of external inputs, which can otherwise be treated as disturbances,
has been widely studied in control and computer science communities. These predictions …

Control Barrier Functions for Linear Continuous-Time Input-Delay Systems with Limited-Horizon Previewable Disturbances

T Pati, S Hwang, SZ Yong - arXiv preprint arXiv:2403.04243, 2024 - arxiv.org
Cyber-physical and autonomous systems are often equipped with mechanisms that provide
predictions/projections of future disturbances, eg, road curvatures, commonly referred to as …

Delay-dependent set-invariance for linear difference equations with multiple delays: a polyhedral approach

CET Dórea, S Olaru, SI Niculescu… - Journal of Difference …, 2024 - Taylor & Francis
This paper revisits the set-invariance for linear delay-difference equations and proposes
novel delay-dependent notions in contrast with the existing delay-independent constructions …