@inproceedings{25ef6cc32fc746cfbec16aae4f4deed5,
title = "Real-Time resonant magnetic perturbations feedback control system for tearing mode suppression on J-TEXT",
abstract = "Tearing Modes (TMs) degrade the performance of tokamak plasma, and can even lead to disruption. Using externally exerted resonant magnetic perturbations (RMP) to suppress tearing mode is a promising and effective way. In order to suppress 2/1 tearing mode, 2/1 RMP applied in given phase region to stabilize magnetic island and accelerate island rotation. The RMP feedback control system acquires 15-channels Mirnov poloidal signals, processes the acquired data and calculates the phase in real-Time; outputs RMP power supply control signal by comparing with the given phase to drive RMP coil. The feedback control system is based on NI C-RIO and mainly using LabVIEW to develop. The typical 2/1 mode magnetic island on J-TEXT rotates at a frequency from 2 KHz to 10 KHz. To ensure the control precision within 2 degrees, the control period must be within 500 ns. Due to acquired signals are noisy, the feedback control system uses a series of error correction methods in realtime to obtain accurate phase.",
keywords = "C-RIO, feedback control, fusion, J-TEXT tokamak, LabVIEW FPGA, RMP, Tearing mode suppression",
author = "Wei Zheng and Feiran Hu and Ming Zhang and Da Li and Qiming Hu and Hai Jin and Yuan Pan",
note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE-NPSS Real Time Conference, RT 2016 ; Conference date: 06-06-2016 Through 10-06-2016",
year = "2016",
month = aug,
day = "12",
doi = "10.1109/RTC.2016.7543130",
language = "English (US)",
series = "2016 IEEE-NPSS Real Time Conference, RT 2016",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2016 IEEE-NPSS Real Time Conference, RT 2016",
address = "United States",
}