Search Results for author: Umesh Vaidya

Found 11 papers, 2 papers with code

Synthesizing Controller for Safe Navigation using Control Density Function

no code implementations21 Mar 2024 Joseph Moyalan, Sriram S. K. S Narayanan, Andrew Zheng, Umesh Vaidya

One of the main advantages of the proposed QP using CDF compared to QP formulated using CBF is that both the convergence/stability and safety can be combined and imposed using the CDF.

Spectral Koopman Method for Identifying Stability Boundary

no code implementations11 Dec 2023 Bhagyashree Umathe, Umesh Vaidya

For a dynamical system with an asymptotically stable equilibrium point, the domain of attraction constitutes a region consisting of all initial conditions attracted to the equilibrium point.

Data-Driven Convex Approach to Off-road Navigation via Linear Transfer Operators

no code implementations3 Oct 2022 Joseph Moyalan, Yongxin Chen, Umesh Vaidya

We provide a convex formulation to the off-road navigation problem by lifting the problem to the density space using the linear Perron-Frobenius (P-F) operator.

Information-Theoretic Approach for Model Reduction Over Finite Time Horizon

no code implementations24 Nov 2021 Punit Tulpule, Umesh Vaidya

Hence, in this paper, we propose a generalization of KL divergence-based metric called n-step KL rate metric, which could be used to compare models over a finite time horizon.

Data-driven Identification of Nonlinear Power System Dynamics Using Output-only Measurements

no code implementations4 Oct 2021 Pranav Sharma, Venkataramana Ajjarapu, Umesh Vaidya

The developed method of Extended Subspace Identification (ESI) is suitable for systems with output measurements when all the dynamics states are not observable.

Sparse Control Synthesis for Uncertain Responsive Loads with Stochastic Stability Guarantees

no code implementations27 Jun 2021 Sai Pushpak Nandanoori, Soumya Kundu, Jianming Lian, Umesh Vaidya, Draguna Vrabie, Karanjit Kalsi

Detailed numerical studies are carried out on IEEE 39-bus system to demonstrate the closed-loop stochastic stabilizing performance of the sparse controllers in enhancing frequency response under load uncertainties; as well as illustrate the fundamental trade-off between the allowable uncertainties and optimal control efforts.

Deep Learning of Koopman Representation for Control

no code implementations15 Oct 2020 Yiqiang Han, Wenjian Hao, Umesh Vaidya

The OpenAI Gym environment, employed for Reinforcement Learning-based control design, is used for data generation and learning of Koopman operator in control setting.

OpenAI Gym reinforcement-learning +1

A Convex Approach to Data-driven Optimal Control via Perron-Frobenius and Koopman Operators

no code implementations5 Oct 2020 Bowen Huang, Umesh Vaidya

We provide a convex formulation for the optimal control problem of the nonlinear system.

Optimization and Control Systems and Control Systems and Control Dynamical Systems

Information Based Data-Driven Characterization of Stability and Influence in Power Systems

no code implementations24 Oct 2019 Subhrajit Sinha, Pranav Sharma, Venkataramana Ajjarapu, Umesh Vaidya

In this paper, we provide a purely data-driven technique for small-signal stability classification (voltage or angle stability) and influence characterization for a power network.

A Fast Saddle-Point Dynamical System Approach to Robust Deep Learning

1 code implementation18 Oct 2019 Yasaman Esfandiari, Aditya Balu, Keivan Ebrahimi, Umesh Vaidya, Nicola Elia, Soumik Sarkar

Under the assumptions that the cost function is convex and uncertainties enter concavely in the robust learning problem, we analytically show that our algorithm converges asymptotically to the robust optimal solution under a general adversarial budget constraints as induced by $\ell_p$ norm, for $1\leq p\leq \infty$.

Particle Clustering Machine: A Dynamical System Based Approach

1 code implementation30 Dec 2017 Sambarta Dasgupta, Keivan Ebrahimi, Umesh Vaidya

In this work, we propose a novel method to cluster the data points using dynamical systems theory.

Clustering

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