Search Results for author: Warren E. Dixon

Found 6 papers, 0 papers with code

Lyapunov-Based Deep Residual Neural Network (ResNet) Adaptive Control

no code implementations10 Apr 2024 Omkar Sudhir Patil, Duc M. Le, Emily J. Griffis, Warren E. Dixon

Deep Neural Network (DNN)-based controllers have emerged as a tool to compensate for unstructured uncertainties in nonlinear dynamical systems.

Composite Adaptive Lyapunov-Based Deep Neural Network (Lb-DNN) Controller

no code implementations21 Nov 2023 Omkar Sudhir Patil, Emily J. Griffis, Wanjiku A. Makumi, Warren E. Dixon

Recent advancements in adaptive control have equipped deep neural network (DNN)-based controllers with Lyapunov-based adaptation laws that work across a range of DNN architectures to uniquely enable online learning.

Lyapunov-Based Dropout Deep Neural Network (Lb-DDNN) Controller

no code implementations30 Oct 2023 Saiedeh Akbari, Emily J. Griffis, Omkar Sudhir Patil, Warren E. Dixon

Simulation results of the developed dropout DNN-based adaptive controller indicate a 38. 32% improvement in the tracking error, a 53. 67% improvement in the function approximation error, and 50. 44% lower control effort when compared to a baseline adaptive DNN-based controller without dropout regularization.

Distributed State Estimation with Deep Neural Networks for Uncertain Nonlinear Systems under Event-Triggered Communication

no code implementations3 Feb 2022 Federico M. Zegers, Runhan Sun, Girish Chowdhary, Warren E. Dixon

Distributed state estimation is examined for a sensor network tasked with reconstructing a system's state through the use of a distributed and event-triggered observer.

Temporal-Logic-Based Intermittent, Optimal, and Safe Continuous-Time Learning for Trajectory Tracking

no code implementations6 Apr 2021 Aris Kanellopoulos, Filippos Fotiadis, Chuangchuang Sun, Zhe Xu, Kyriakos G. Vamvoudakis, Ufuk Topcu, Warren E. Dixon

In this paper, we develop safe reinforcement-learning-based controllers for systems tasked with accomplishing complex missions that can be expressed as linear temporal logic specifications, similar to those required by search-and-rescue missions.

Reinforcement Learning (RL) Safe Reinforcement Learning

Efficient model-based reinforcement learning for approximate online optimal

no code implementations9 Feb 2015 Rushikesh Kamalapurkar, Joel A. Rosenfeld, Warren E. Dixon

In this paper the infinite horizon optimal regulation problem is solved online for a deterministic control-affine nonlinear dynamical system using the state following (StaF) kernel method to approximate the value function.

Model-based Reinforcement Learning reinforcement-learning +1

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