Search Results for author: S. Sivaranjani

Found 9 papers, 3 papers with code

Compositional Estimation of Lipschitz Constants for Deep Neural Networks

no code implementations5 Apr 2024 Yuezhu Xu, S. Sivaranjani

The Lipschitz constant plays a crucial role in certifying the robustness of neural networks to input perturbations and adversarial attacks, as well as the stability and safety of systems with neural network controllers.

Sampling-based Safe Reinforcement Learning for Nonlinear Dynamical Systems

1 code implementation6 Mar 2024 Wesley A. Suttle, Vipul K. Sharma, Krishna C. Kosaraju, S. Sivaranjani, Ji Liu, Vijay Gupta, Brian M. Sadler

We develop provably safe and convergent reinforcement learning (RL) algorithms for control of nonlinear dynamical systems, bridging the gap between the hard safety guarantees of control theory and the convergence guarantees of RL theory.

reinforcement-learning Reinforcement Learning (RL) +1

Learning Dissipative Neural Dynamical Systems

no code implementations27 Sep 2023 Yuezhu Xu, S. Sivaranjani

The objective of this paper is to learn a neural dynamical model that approximates this system, while preserving the dissipativity property in the model.

Safe Control Design through Risk-Tunable Control Barrier Functions

no code implementations19 Sep 2023 Vipul K. Sharma, S. Sivaranjani

We consider the problem of designing controllers to guarantee safety in a class of nonlinear systems under uncertainties in the system dynamics and/or the environment.

Distributed Learning of Neural Lyapunov Functions for Large-Scale Networked Dissipative Systems

no code implementations15 Jul 2022 Amit Jena, Tong Huang, S. Sivaranjani, Dileep Kalathil, Le Xie

One standard approach to estimate the stability region of a general nonlinear system is to first find a Lyapunov function for the system and characterize its region of attraction as the stability region.

Distributed Optimization

The Impact of Heavy-Duty Vehicle Electrification on Large Power Grids: a Synthetic Texas Case Study

no code implementations8 Mar 2022 Rayan El Helou, S. Sivaranjani, Dileep Kalathil, Andrew Schaper, Le Xie

In fact, we find that as little as 11% of heavy duty vehicles in Texas charging simultaneously can lead to significant voltage violations on the transmission network that compromise grid reliability.

A Multi-scale Time-series Dataset with Benchmark for Machine Learning in Decarbonized Energy Grids

1 code implementation12 Oct 2021 Xiangtian Zheng, Nan Xu, Loc Trinh, Dongqi Wu, Tong Huang, S. Sivaranjani, Yan Liu, Le Xie

The electric grid is a key enabling infrastructure for the ambitious transition towards carbon neutrality as we grapple with climate change.

Time Series Time Series Analysis

Safety during Transient Response in Direct Current Microgrids using Control Barrier Functions

no code implementations4 Feb 2021 K. C. Kosaraju, S. Sivaranjani, V. Gupta

To achieve this, we propose an optimization based controller design using control barrier functions.

Tracking and Analyzing the Short-Run Impact of COVID-19 on the U.S. Electricity Sector

1 code implementation11 May 2020 Guangchun Ruan, Dongqi Wu, Xiangtian Zheng, S. Sivaranjani, Le Xie, Haiwang Zhong, Chongqing Kang

The novel coronavirus disease (COVID-19) has rapidly spread around the globe in 2020, with the U. S. becoming the epicenter of COVID-19 cases and deaths in late March.

Computers and Society

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