Search Research Symposium Abstracts

Location of zeros of some classes of quasi-polynomials for the stabilituy stiudy of dynamical systems with delay*

In this talk we will consider delay systems with characteristic equation being a quasi-polynomial with one delay and polynomials of degree n. Contrary to what is admitted in the delay systems litterature, a subclass of quasi-polynomials is shown to possess a real zero at infinity when the delay appears. By applying the Argument Principle to a carefully [Read More...]

Presenter: Catherine Bonnet, Inria
Authors: Le Ha Vy Nguyen, Catherine Bonnet and Islam Boussaada
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 10:15 am

Large-scale data archives and analytic tools for multimodal data

The Epilepsy Bioinformatics Study for Antiepileptogenic Therapy (EpiBioS4Rx), is a multi-site, international collaboration including a parallel study of humans and an animal model, collecting MRI, EEG, and blood samples. The development of epilepsy after TBI is a multifactorial process and crosses multiple modalities. Without a full understanding of the [Read More...]

Presenter: Dominique Duncan, University of Southern California
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 10:40 am

Co-Design of Dynamic Allocation Functions and Anti-Windup*

This talk addresses the design of dynamic allocation functions for systems with saturating actuators. The allocator can redistribute the desired control effort within the multiple actuators by penalizing each actuator to be more or less used, while also taking into account a criterium for minimization of their total energy consump- tion over time. [Read More...]

Presenter: Sophie Tarbouriech, CNRS
Authors: Joint work with Thiago A. Lima - Paper published in IEEE-LCSS 2021
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 11:05 am

Safe Learning and Control with L1 Adaptation*

Learning-based control paradigms have seen many success stories with various robots and co-robots in recent years. However, as these robots prepare to enter the real world, operating safely in the presence of imperfect model knowledge and external disturbances is going to be vital to ensure mission success. In the first part of the talk, we present an [Read More...]

Presenter: Naira Hovakimyan, UIUC
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 11:30 am

A Systems Engineering Approach to Molecular Organization*

Simulation-based design and model-predictive control are well-established approaches for the engineering of macroscopic systems, in applications ranging from bridges to aircraft to petrochemical plants. However, the design and control of collections of molecules are often approached from an empirical perspective, especially when an explicit consideration of [Read More...]

Presenter: Martha Grover, Georgia Institute of Technology
Authors: Martha Grover
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 3:20 pm

Periodic behaviors in recombinase-based molecular circuits

An important challenge in synthetic biology is the construction of periodic circuits with tunable and predictable period. We propose a general architecture, based on the use of recombinase proteins and negative feedback, to build molecular devices for periodic switching between two distinct regimes; the switching rule depends on known concentration [Read More...]

Presenter: Elisa Franco, UCLA
Authors: Judith Landau, Christian Cuba Samaniego, Giulia Giordano, and Elisa Franco
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 3:45 pm

Data-driven Dynamic Ambiguity Sets: Precision Tradeoffs under Noisy Measurements

Stochastic and robust optimization constitute natural frameworks to solve decision-making and control problems subject to uncertainty. However, these fall short in addressing real-world scenarios for which models of the uncertainty are not available. Data-driven approaches can be of help to approximate such models, but typically require large amounts of data [Read More...]

Presenter: Sonia Martinez, University of California, San Diego
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 4:10 pm

A Graph Theory Based Approach to Modeling Dynamic Wind Turbine Yaw

Yaw control has shown great potential as a method for increasing the power output of wind farms but there have been relatively few efforts to model the dynamic behavior of an array of dynamically yawing turbines. When a turbine is dynamically yawed, the wake created by that turbine is deflected and its shape changes, which also affects the dynamics of [Read More...]

Presenter: Genevieve M Starke, Johns Hopkins University
Authors: Genevieve M. Starke, Charles Meneveau, Jennifer R. King, and Dennice F. Gayme
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 18, 2022; 4:35 pm

Safe Adaptive Learning for Linear Quadratic Regulators with Constraints*

This paper considers single-trajectory adaptive/online learning for linear quadratic regulator (LQR) with an unknown system and constraints on the states and actions. The major challenges are two-fold: 1) how to ensure safety without restarting the system, and 2) how to mitigate the inherent tension among exploration, exploitation, and safety. To tackle [Read More...]

Presenter: Yingying Li, University of Illinois Urbana-Champaign
Authors: Yingying Li, Tianpeng Zhang, Subhro Das, Jeff Shamma, Na Li
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 19, 2022; 8:50 am

Poroelastic Systems: Analysis, Sensitivity, and Control

Fluid flows through deformable porous media are relevant for many applications in biology, medicine and bio-engineering, including tissue perfusion and fluid flow inside cartilages and bones. We are interested in perfusion inside the eye and its connection to the development of glaucoma. Mathematically, the problem translates into the study of a [Read More...]

Presenter: Lorena Bociu, NC State University
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 19, 2022; 9:15 am

Optimal Control of Fluid Flows through Deformable Porous Media

We consider an optimal control problem subject to a poro-visco-elastic model with applications to fluid flows through biological tissues. Our goal is to optimize the fluid pressure and solid displacement using distributed or boundary control. We reference an application of this problem to the human eye. We discuss the theoretical results for the problem as [Read More...]

Presenter: Sarah Strikwerda, North Carolina State University
Authors: Lorena Bociu and Sarah Strikwerda
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 19, 2022; 9:40 am

Interdisciplinary Research Addressing New Challenges: The Central Role of Stochastic Systems and Control

Many continuous time stochastic systems that are modeled by SDE and SPDE have been limited to noise processes being Brownian motions. Brownian motion models have a well developed stochastic calculus and limiting behaviors that reflect the martingale, Markov and Gaussian properties. However for many physical systems the empirical data do not justify the use [Read More...]

Presenter: Bozenna Pasik-Duncan, University of Kansas
Authors: Bozenna Pasik-Duncan
Symposium Year: 2022
Session: Systems and Control
Presentation Time: June 19, 2022; 10:05 am