Search Results for author: Anuradha M. Annaswamy

Found 17 papers, 1 papers with code

Safe and Stable Adaptive Control for a Class of Dynamic Systems

no code implementations11 Sep 2023 Johannes Autenrieb, Anuradha M. Annaswamy

Adaptive control has focused on online control of dynamic systems in the presence of parametric uncertainties, with solutions guaranteeing stability and control performance.

Accelerated Algorithms for a Class of Optimization Problems with Equality and Box Constraints

no code implementations8 May 2023 Anjali Parashar, Priyank Srivastava, Anuradha M. Annaswamy

Convex optimization with equality and inequality constraints is a ubiquitous problem in several optimization and control problems in large-scale systems.

Neural Network Adaptive Control with Long Short-Term Memory

no code implementations5 Jan 2023 Emirhan Inanc, Yigit Gurses, Abdullah Habboush, Yildiray Yildiz, Anuradha M. Annaswamy

We also provide an analysis of the contributions of the ANN controller and LSTM network to the control input, identifying their individual roles in compensating low and high-frequency error dynamics.

Human Behavioral Models Using Utility Theory and Prospect Theory

no code implementations13 Oct 2022 Anuradha M. Annaswamy, Vineet Jagadeesan Nair

Examples will be drawn from transportation use cases such as shared mobility to illustrate these models as well as the distinctions between Utility Theory and Prospect Theory.

Decision Making

Grid-SiPhyR: An end-to-end learning to optimize framework for combinatorial problems in power systems

no code implementations11 Jun 2022 Rabab Haider, Anuradha M. Annaswamy

Mixed integer problems are ubiquitous in decision making, from discrete device settings and design parameters, unit production, and on/off or yes/no decision in switches, routing, and social networks.

Combinatorial Optimization Decision Making +1

DER Forecast using Privacy Preserving Federated Learning

no code implementations7 Jul 2021 Venkatesh Venkataramanan, Sridevi Kaza, Anuradha M. Annaswamy

With increasing penetration of Distributed Energy Resources (DERs) in grid edge including renewable generation, flexible loads, and storage, accurate prediction of distributed generation and consumption at the consumer level becomes important.

Federated Learning Privacy Preserving

Online Algorithms and Policies Using Adaptive and Machine Learning Approaches

no code implementations13 May 2021 Anuradha M. Annaswamy, Anubhav Guha, Yingnan Cui, Sunbochen Tang, Peter A. Fisher, Joseph E. Gaudio

AC-RL controllers are proposed for both classes of systems and shown to lead to online policies that guarantee stability using a high-order tuner and accommodate parametric uncertainties and magnitude limits on the input.

BIG-bench Machine Learning Reinforcement Learning (RL)

New Algorithms for Discrete-Time Parameter Estimation

no code implementations30 Mar 2021 Yingnan Cui, Joseph E. Gaudio, Anuradha M. Annaswamy

We propose two algorithms for discrete-time parameter estimation, one for time-varying parameters under persistent excitation (PE) condition, another for constant parameters under no PE condition.

A High-order Tuner for Accelerated Learning and Control

no code implementations23 Mar 2021 Spencer McDonald, Yingnan Cui, Joseph E. Gaudio, Anuradha M. Annaswamy

Gradient-descent based iterative algorithms pervade a variety of problems in estimation, prediction, learning, control, and optimization.

Decision Making Vocal Bursts Intensity Prediction

Reinventing the Utility for DERs: A Proposal for a DSO-Centric Retail Electricity Market

no code implementations2 Feb 2021 Rabab Haider, David D'Achiardi, Venkatesh Venkataramanan, Anurag Srivastava, Anjan Bose, Anuradha M. Annaswamy

The increasing penetration of intermittent renewables, storage devices, and flexible loads is introducing operational challenges in distribution grids.

Scheduling

A Stable High-order Tuner for General Convex Functions

no code implementations19 Nov 2020 José M. Moreu, Anuradha M. Annaswamy

Recently, a new High-order Tuner (HT) was developed for linear regression problems and shown to have 1) stability and asymptotic convergence for time-varying regressors and 2) non-asymptotic accelerated learning guarantees for constant regressors.

Vocal Bursts Intensity Prediction

Accurate Parameter Estimation for Risk-aware Autonomous Systems

no code implementations23 Jun 2020 Arnab Sarker, Peter Fisher, Joseph E. Gaudio, Anuradha M. Annaswamy

Experiments are provided to support all theoretical derivations, which show that the spectral lines-based approach outperforms the Gaussian noise-based method when unmodeled dynamics are present, in terms of both parameter estimation error and Regret obtained using the parameter estimates with a Linear Quadratic Regulator in feedback.

BIG-bench Machine Learning

Accelerated Learning with Robustness to Adversarial Regressors

no code implementations4 May 2020 Joseph E. Gaudio, Anuradha M. Annaswamy, José M. Moreu, Michael A. Bolender, Travis E. Gibson

Recently, connections with variational approaches have led to the derivation of new learning algorithms with accelerated learning guarantees.

Parameter Estimation in Adaptive Control of Time-Varying Systems Under a Range of Excitation Conditions

no code implementations10 Nov 2019 Joseph E. Gaudio, Anuradha M. Annaswamy, Eugene Lavretsky, Michael A. Bolender

The main feature of this algorithm is a matrix of time-varying learning rates, which enables parameter estimation error trajectories to tend exponentially fast towards a compact set whenever excitation conditions are satisfied.

Connections Between Adaptive Control and Optimization in Machine Learning

no code implementations11 Apr 2019 Joseph E. Gaudio, Travis E. Gibson, Anuradha M. Annaswamy, Michael A. Bolender, Eugene Lavretsky

This paper demonstrates many immediate connections between adaptive control and optimization methods commonly employed in machine learning.

BIG-bench Machine Learning

Provably Correct Learning Algorithms in the Presence of Time-Varying Features Using a Variational Perspective

no code implementations12 Mar 2019 Joseph E. Gaudio, Travis E. Gibson, Anuradha M. Annaswamy, Michael A. Bolender

This variational perspective includes higher order learning concepts and normalization, both of which stem from adaptive control, and allows stability to be established for dynamical machine learning problems where time-varying features are present.

BIG-bench Machine Learning

Squaring-Up Method In the Presence of Transmission Zeros

1 code implementation5 Oct 2013 Zheng Qu, Daniel Wiese, Anuradha M. Annaswamy, Eugene Lavretsky

This paper presents a method to square up a generic MIMO system that already possesses transmission zeros.

Optimization and Control

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