Extremum-seeking-based fluctuation mitigation by E×B actuation in HELCAT

Author

Wang, Qiaoqiao ; Schuster, Eugenio ; Gilmore, Mark ; Xie, Shuangwei ; Ware, Andrew

Author_Institution

Dept. of Mech. Eng. & Mech., Lehigh Univ., Bethlehem, PA, USA

fYear

2011

Firstpage

301

Lastpage

306

Abstract

We investigate active control of fluctuations via manipulation of flow profiles in a magnetized laboratory plasma device (HELCAT). Fluctuations and particle transport are monitored by electrostatic probes, and E×B flow profiles controlled via biased ring electrodes. A non-model-based optimization algorithm is implemented to seek control inputs that minimize a cost function related to the fluctuation amplitude. The algorithm is also able to identify radial poloidal flow profiles associated with specific levels of RMS fluctuations.

Keywords

flow control; minimisation; plasma devices; plasma fluctuations; plasma magnetohydrodynamics; plasma probes; plasma transport processes; ExB actuation; HELCAT; RMS fluctuations; active control; biased ring electrodes; cost function minimization; electrostatic probes; extremum seeking based fluctuation mitigation; flow profile control; flow profile manipulation; fluctuation amplitude; magnetized laboratory plasma device; nonmodel based optimization algorithm; particle transport; Cost function; Equations; Mathematical model; Plasma devices; Plasma measurements; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications (CCA), 2011 IEEE International Conference on

Conference_Location

Denver, CO

Print_ISBN

978-1-4577-1062-9

Electronic_ISBN

978-1-4577-1061-2

Type

conf

DOI

10.1109/CCA.2011.6044378

Filename

6044378