Search Results for author: Richard M. Murray

Found 16 papers, 6 papers with code

Specifying and Analyzing Networked and Layered Control Systems Operating on Multiple Clocks

no code implementations18 Feb 2024 Inigo Incer, Noel Csomay-Shanklin, Aaron Ames, Richard M. Murray

We consider the problem of reasoning about networked and layered control systems using assume-guarantee specifications.

Model Predictive Control

Lipschitz Continuity of Signal Temporal Logic Robustness Measures: Synthesizing Control Barrier Functions from One Expert Demonstration

no code implementations7 Apr 2023 Prithvi Akella, Apurva Badithela, Richard M. Murray, Aaron D. Ames

By filtering control inputs to maintain the positivity of this function, we ensure that the system trajectory satisfies the desired STL specification.

Open-Ended Question Answering

OUTformation: Distributed Data-Gathering with Feedback under Unknown Environment and Communication Delay Constraints

no code implementations12 Aug 2022 SooJean Han, Michelle Effros, Richard M. Murray

Towards the informed design of large-scale distributed data-gathering architectures under real-world assumptions such as nonzero communication delays and unknown environment dynamics, this paper considers the effects of allowing feedback communication from the central processor to external sensors.

Robust Safe Control Synthesis with Disturbance Observer-Based Control Barrier Functions

no code implementations15 Jan 2022 Ersin Daş, Richard M. Murray

A high-gain input observer method is adapted to estimate the time-varying unmodelled dynamics of the CBF with an error bound using the first-order time derivative of the CBF.

Risk-Averse Decision Making Under Uncertainty

no code implementations9 Sep 2021 Mohamadreza Ahmadi, Ugo Rosolia, Michel D. Ingham, Richard M. Murray, Aaron D. Ames

In this paper, we consider the problem of designing policies for MDPs and POMDPs with objectives and constraints in terms of dynamic coherent risk measures, which we refer to as the constrained risk-averse problem.

Decision Making Decision Making Under Uncertainty

Synthesis of Static Test Environments for Observing Sequence-like Behaviors in Autonomous Systems

no code implementations12 Aug 2021 Apurva Badithela, Richard M. Murray

We an algorithm, based on network flows, for synthesizing a test graph by restricting transitions, represented by edge deletions, on the original graph induced by the Kripke structures.

Decision Making

Failure-Tolerant Contract-Based Design of an Automated Valet Parking System using a Directive-Response Architecture

no code implementations24 Mar 2021 Josefine Graebener, Tung Phan-Minh, Jiaqi Yan, Qiming Zhao, Richard M. Murray

Increased complexity in cyber-physical systems calls for modular system design methodologies that guarantee correct and reliable behavior, both in normal operations and in the presence of failures.

Constrained Risk-Averse Markov Decision Processes

no code implementations4 Dec 2020 Mohamadreza Ahmadi, Ugo Rosolia, Michel D. Ingham, Richard M. Murray, Aaron D. Ames

We consider the problem of designing policies for Markov decision processes (MDPs) with dynamic coherent risk objectives and constraints.

Counter-example Guided Learning of Bounds on Environment Behavior

1 code implementation20 Jan 2020 Yuxiao Chen, Sumanth Dathathri, Tung Phan-Minh, Richard M. Murray

There is a growing interest in building autonomous systems that interact with complex environments.

Risk-Averse Planning Under Uncertainty

no code implementations27 Sep 2019 Mohamadreza Ahmadi, Masahiro Ono, Michel D. Ingham, Richard M. Murray, Aaron D. Ames

We consider the problem of designing policies for partially observable Markov decision processes (POMDPs) with dynamic coherent risk objectives.

End-to-End Safe Reinforcement Learning through Barrier Functions for Safety-Critical Continuous Control Tasks

1 code implementation21 Mar 2019 Richard Cheng, Gabor Orosz, Richard M. Murray, Joel W. Burdick

Reinforcement Learning (RL) algorithms have found limited success beyond simulated applications, and one main reason is the absence of safety guarantees during the learning process.

Continuous Control Gaussian Processes +2

Detecting Adversarial Examples via Neural Fingerprinting

1 code implementation11 Mar 2018 Sumanth Dathathri, Stephan Zheng, Tianwei Yin, Richard M. Murray, Yisong Yue

Deep neural networks are vulnerable to adversarial examples, which dramatically alter model output using small input changes.

Symbolic construction of GR(1) contracts for synchronous systems with full information

1 code implementation11 Aug 2015 Ioannis Filippidis, Richard M. Murray

This work proposes a symbolic algorithm for the construction of assume-guarantee specifications that allow multiple agents to cooperate.

Logic in Computer Science Systems and Control

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