Search Results for author: Efe C. Balta

Found 25 papers, 0 papers with code

Adaptive Bayesian Optimization for High-Precision Motion Systems

no code implementations22 Apr 2024 Christopher König, Raamadaas Krishnadas, Efe C. Balta, Alisa Rupenyan

We further evaluate the algorithm's performance on a real precision-motion system utilized in semiconductor industry applications by modifying the payload and reference stepsize and comparing it to an interpolated constrained optimization-based baseline approach.

Bayesian Optimization Computational Efficiency

On the Regret of Recursive Methods for Discrete-Time Adaptive Control with Matched Uncertainty

no code implementations2 Apr 2024 Aren Karapetyan, Efe C. Balta, Anastasios Tsiamis, Andrea Iannelli, John Lygeros

Continuous-time adaptive controllers for systems with a matched uncertainty often comprise an online parameter estimator and a corresponding parameterized controller to cancel the uncertainty.

Force Controlled Printing for Material Extrusion Additive Manufacturing

no code implementations24 Mar 2024 Xavier Guidetti, Nathan Mingard, Raul Cruz-Oliver, Yannick Nagel, Marvin Rueppel, Alisa Rupenyan, Efe C. Balta, John Lygeros

In material extrusion additive manufacturing, the extrusion process is commonly controlled in a feed-forward fashion.

Data-Enabled Predictive Repetitive Control

no code implementations18 Mar 2024 Kai Zhang, Riccardo Zuliani, Efe C. Balta, John Lygeros

This work introduces the Data-Enabled Predictive Repetitive Control (DeePRC) algorithm, a direct data-driven approach for repetitive LTI systems.

Online Identification of Stochastic Continuous-Time Wiener Models Using Sampled Data

no code implementations9 Mar 2024 Mohamed Abdalmoaty, Efe C. Balta, John Lygeros, Roy S. Smith

It is well known that ignoring the presence of stochastic disturbances in the identification of stochastic Wiener models leads to asymptotically biased estimators.

Closed-loop Performance Optimization of Model Predictive Control with Robustness Guarantees

no code implementations7 Mar 2024 Riccardo Zuliani, Efe C. Balta, John Lygeros

Model mismatch and process noise are two frequently occurring phenomena that can drastically affect the performance of model predictive control (MPC) in practical applications.

Model Predictive Control

Predictive Linear Online Tracking for Unknown Targets

no code implementations15 Feb 2024 Anastasios Tsiamis, Aren Karapetyan, Yueshan Li, Efe C. Balta, John Lygeros

The learned model is used in the optimal policy under the framework of receding horizon control.

Closed-Loop Finite-Time Analysis of Suboptimal Online Control

no code implementations9 Dec 2023 Aren Karapetyan, Efe C. Balta, Andrea Iannelli, John Lygeros

Finite-time guarantees allow the control design to distribute a limited computational budget over a time horizon and estimate the on-the-go loss in performance due to sub-optimality.

Model Predictive Control

Layer-to-Layer Melt Pool Control in Laser Power Bed Fusion

no code implementations16 Nov 2023 Dominic Liao-McPherson, Efe C. Balta, Mohamadreza Afrasiabi, Alisa Rupenyan, Markus Bambach, John Lygeros

Additive manufacturing processes are flexible and efficient technologies for producing complex geometries.

Efficient safe learning for controller tuning with experimental validation

no code implementations26 Oct 2023 Marta Zagorowska, Christopher König, Hanlin Yu, Efe C. Balta, Alisa Rupenyan, John Lygeros

The performance of the new method is first validated in a simulated precision motion system, demonstrating improved computational efficiency, and illustrating the role of exploiting numerical solvers to reach the desired precision.

Computational Efficiency

Sequential Quadratic Programming-based Iterative Learning Control for Nonlinear Systems

no code implementations24 Jul 2023 Samuel Balula, Efe C. Balta, Dominic Liao-McPherson, Alisa Rupenyan, John Lygeros

We present simulations to illustrate the performance of the proposed method for linear and nonlinear dynamics models.

Safe Risk-averse Bayesian Optimization for Controller Tuning

no code implementations23 Jun 2023 Christopher Koenig, Miks Ozols, Anastasia Makarova, Efe C. Balta, Andreas Krause, Alisa Rupenyan

Controller tuning and parameter optimization are crucial in system design to improve both the controller and underlying system performance.

Bayesian Optimization

On the Finite-Time Behavior of Suboptimal Linear Model Predictive Control

no code implementations17 May 2023 Aren Karapetyan, Efe C. Balta, Andrea Iannelli, John Lygeros

Inexact methods for model predictive control (MPC), such as real-time iterative schemes or time-distributed optimization, alleviate the computational burden of exact MPC by providing suboptimal solutions.

Distributed Optimization Model Predictive Control

Online Linear Quadratic Tracking with Regret Guarantees

no code implementations17 Mar 2023 Aren Karapetyan, Diego Bolliger, Anastasios Tsiamis, Efe C. Balta, John Lygeros

Online learning algorithms for dynamical systems provide finite time guarantees for control in the presence of sequentially revealed cost functions.

Stochastic Wasserstein Gradient Flows using Streaming Data with an Application in Predictive Maintenance

no code implementations29 Jan 2023 Nicolas Lanzetti, Efe C. Balta, Dominic Liao-McPherson, Florian Dörfler

Since estimation problems can be posed as optimization problems in the probability space, we devise a stochastic projected Wasserstein gradient flow that keeps track of the belief of the estimated quantity and can consume samples from online data.

Decision Making

Implications of Regret on Stability of Linear Dynamical Systems

no code implementations14 Nov 2022 Aren Karapetyan, Anastasios Tsiamis, Efe C. Balta, Andrea Iannelli, John Lygeros

The setting of an agent making decisions under uncertainty and under dynamic constraints is common for the fields of optimal control, reinforcement learning, and recently also for online learning.

Risk-Averse Model Predictive Control for Priced Timed Automata

no code implementations27 Oct 2022 Mostafa Tavakkoli Anbarani, Efe C. Balta, Rômulo Meira-Góes, Ilya Kovalenko

In this paper, we propose a Risk-Averse Priced Timed Automata (PTA) Model Predictive Control (MPC) framework to increase flexibility of cyber-physical systems.

Decision Making Model Predictive Control

Controller-Aware Dynamic Network Management for Industry 4.0

no code implementations28 May 2022 Efe C. Balta, Mohammad H. Mamduhi, John Lygeros, Alisa Rupenyan

In this paper, we consider a cyber-physical manufacturing system (CPMS) scenario containing physical components (robots, sensors, and actuators), operating in a digitally connected, constrained environment to perform industrial tasks.

Management

Regret Analysis of Online Gradient Descent-based Iterative Learning Control with Model Mismatch

no code implementations10 Apr 2022 Efe C. Balta, Andrea Iannelli, Roy S. Smith, John Lygeros

In Iterative Learning Control (ILC), a sequence of feedforward control actions is generated at each iteration on the basis of partial model knowledge and past measurements with the goal of steering the system toward a desired reference trajectory.

On Robustness in Optimization-Based Constrained Iterative Learning Control

no code implementations10 Mar 2022 Dominic Liao-McPherson, Efe C. Balta, Alisa Rupenyan, John Lygeros

Iterative learning control (ILC) is a control strategy for repetitive tasks wherein information from previous runs is leveraged to improve future performance.

Learning-Based Repetitive Precision Motion Control with Mismatch Compensation

no code implementations19 Nov 2021 Efe C. Balta, Kira Barton, Dawn M. Tilbury, Alisa Rupenyan, John Lygeros

In this work, we develop an iterative approach for repetitive precision motion control problems where the objective is to follow a reference geometry with minimal tracking error.

GPR

Batch Model Predictive Control for Selective Laser Melting

no code implementations16 Nov 2021 Riccardo Zuliani, Efe C. Balta, Alisa Rupenyan, John Lygeros

Selective laser melting is a promising additive manufacturing technology enabling the fabrication of highly customizable products.

Model Predictive Control

In-layer Thermal Control of a Multi-layer Selective Laser Melting Process

no code implementations1 Nov 2021 Dominic Liao-McPherson, Efe C. Balta, Ryan Wüest, Alisa Rupenyan, John Lygeros

Selective Laser Melting (SLM) is an additive manufacturing technology that builds three dimensional parts by melting layers of metal powder together with a laser that traces out a desired geometry.

Cannot find the paper you are looking for? You can Submit a new open access paper.