[Cbe-grads] Congratulations to Joel Paulson

[Paulson, Joel A.]

Title: Toward Safe Dose Delivery in Plasma Medicine using Projected Neural Network-based Fast Approximate NMPC

Abstract: Atmospheric pressure plasma jets (APPJs) are increasingly used for biomedical applications. Reproducible and effective operation of APPJs hinges on controlling the nonlinear effects of plasma on a target substrate in the face of intrinsic variabilities of the plasma as well as exogenous disturbances. This paper presents a low-memory fast approximate nonlinear model predictive control (NMPC) strategy for an APPJ with prototypical applications in plasma medicine. The NMPC objective is to regulate the delivery of the cumulative thermal effects of plasma to a substrate, while adhering to constraints pertaining to a patient’s safety and comfort. Deep neural networks are used to approximate the implicit NMPC law with a cheap-to-evaluate explicit control law that has low memory requirements. Robust constraint satisfaction is guaranteed by projecting the output of the neural network onto a set that ensures the state stays within an appropriately defined invariant set. Closed-loop simulations and real-time control experiments indicate that the proposed approximate NMPC strategy is effective in handling nonlinear control costs at fast sampling times, while guaranteeing satisfaction of safety-critical system constraints. This work takes a crucial step toward fast NMPC of safety-critical plasma applications using resource-limited embedded control hardware.

Also, here is a link to the full conference paper: https://static1.squarespace.com/static/5d4488dc0d24df0001719b1f/t/5eb1a646084e3731c4d95768/1588700743302/IFAC_2020_1_v2.pdf.

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Joel A. Paulson
Assistant Professor
Department of Chemical and Biomolecular Engineering
Core Faculty Member, Sustainability Institute
Affiliate Faculty, Translational Data Analytics Institute
The Ohio State University
https://paulsonlab.engineering.osu.edu


From: "Chalmers, Jeffrey" <chalmers.1 at osu.edu>
Date: Thursday, August 6, 2020 at 2:40 PM
To: "Ozkan, Umit" <ozkan.1 at osu.edu>
Cc: _ENG CBE Faculty <ENG-cbe-faculty at osu.edu>, _ENG CBE Graduate Students <ENG-cbe-gradstudents at osu.edu>, _ENG CBE Researchers <ENG-cbe-researchers at osu.edu>
Subject: Re: Congratulations to Joel Paulson

What is the title? And can we see the abstract?
Jeff Chalmers


On Aug 6, 2020, at 2:38 PM, Ozkan, Umit <ozkan.1 at osu.edu> wrote:
Dear All,
Please join me in congratulating Joel Paulson and his team for being selected as the winner of the Application Paper Prize at the IFAC World Congress this year. This work was actually the first paper he submitted as a faculty member last year in October.
IFAC stands for the “International Federation on Automatic Control” and is one of the main organizations in Joel’s  field. The World Congress conference is held once every 3 years (about 3000 participants). The information is posted online here:  https://www.ifac-control.org/awards/congress-prizes#Application.

Congratulations Joel! And thank you for giving us something to celebrate at a time when we all need some good news!

Best wishes to you all.

Umit S. Ozkan, Ph.D., P.E.
College of Engineering Distinguished Professor
Chair
William G. Lowrie Dept. of Chemical &Biomolecular Engineering
The Ohio State University
151 W. Woodruff Avenue, Columbus, OH 43210
614-292-6623 Office
ozkan.1 at osu.edu<mailto:ozkan.1 at osu.edu>      ozkanhcrg.engineering.osu.edu


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