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2020 – today
- 2023
[c28]Zibo Wang, Hexiang Wang, Eugenio Schuster, Zhengping Luo, Yao Huang, Qiping Yuan, Bingjia Xiao, David A. Humphreys, Sai Tej Paruchuri:
Implementation and Initial Testing of a Model Predictive Controller for Safety Factor Profile and Energy Regulation in the EAST Tokamak*. ACC 2023: 3276-3281- [c27]Andres Pajares, William P. Wehner, Anders S. Welander, Eugenio Schuster, David A. Humphreys:
A Reference Governor for Plasma-Shape Control in Tokamaks. CCTA 2023: 804-809 - 2022
- [c26]Luca Zabeo, Peter C. De Vries, J. A. Snipes, T. Ravensbergen, Y. Gribov, G. Raupp, W. Treutterer, Alfredo Pironti, Gianmaria De Tommasi
, Marcello Cinque, Massimiliano Mattei, David A. Humphreys, M. Walker, Fernanda Rimini, Philippe Moreau, Rémy Nouailletas:
Concepts and challenges in the design of a tokamak plasma control system. ITER PCS for First Plasma and beyond. CCTA 2022: 819-824 - 2021
- [c25]Zibo Wang, Hexiang Wang, Eugenio Schuster, Zhengping Luo, Yao Huang, Qiping Yuan, Bingjia Xiao, David A. Humphreys:
Optimal Shaping of the Safety Factor Profile in the EAST Tokamak. CCTA 2021: 63-68 - 2020
- [c24]K. Erik J. Olofsson, John R. Ferron, David A. Humphreys, F. Turco, DIII-D Team:
Estimation and exploratory regulation of confinement-time based plasma performance in the DIII-D tokamak experiment. CCTA 2020: 764-769
2010 – 2019
- 2017
- [j12]Mira Naftaly, Roland G. Clarke, David A. Humphreys, Nick M. Ridler:
Metrology State-of-the-Art and Challenges in Broadband Phase-Sensitive Terahertz Measurements. Proc. IEEE 105(6): 1151-1165 (2017) - [c23]Menno Lauret, William Wehner, Eugenio Schuster, Christopher T. Holcomb, Timothy C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Benjamin G. Penaflor, Robert D. Johnson:
Current profile and energy control in DIII-D plasmas using discrete-time variable-structure control. MED 2017: 99-104 - 2016
- [c22]William Wehner, Menno Lauret, Eugenio Schuster, John R. Ferron, Chris Holcomb, Tim C. Luce, David A. Humphreys, Michael L. Walker, Ben G. Penaflor, Robert D. Johnson:
Predictive control of the tokamak q profile to facilitate reproducibility of high-qmin steady-state scenarios at DIII-D. CCA 2016: 629-634 - 2015
- [j11]David A. Humphreys, Peter M. Harris, Manuel Rodriguez-Higuero, Faisal Ali Mubarak, Dongsheng Zhao, Kari Ojasalo:
Principal Component Compression Method for Covariance Matrices Used for Uncertainty Propagation. IEEE Trans. Instrum. Meas. 64(2): 356-365 (2015) - [j10]David A. Humphreys, Martin Hudlicka, Irshaad Fatadin:
Calibration of Wideband Digital Real-Time Oscilloscopes. IEEE Trans. Instrum. Meas. 64(6): 1716-1725 (2015) - [c21]William Wehner, Justin E. Barton, Mark D. Boyer, Eugenio Schuster, Tim C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
Current profile control for the development of consistent discharges in DIII-D. CDC 2015: 2601-2606 - 2014
- [j9]Mark D. Boyer, Justin Barton, Eugenio Schuster, Michael L. Walker, Timothy C. Luce, John R. Ferron, Ben G. Penaflor, Robert D. Johnson, David A. Humphreys:
Backstepping Control of the Toroidal Plasma Current Profile in the DIII-D Tokamak. IEEE Trans. Control. Syst. Technol. 22(5): 1725-1739 (2014) - 2013
- [j8]David A. Humphreys, James Miall:
Traceable Measurement of Source and Receiver EVM Using a Real-Time Oscilloscope. IEEE Trans. Instrum. Meas. 62(6): 1413-1416 (2013) - [c20]William Wehner, Wenyu Shi, Eugenio Schuster, Didier Moreau, Michael L. Walker, John R. Ferron, Tim C. Luce, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
Identification and control of magneto-kinetic response during advanced tokamak scenarios in DIII-D. ACC 2013: 1219-1224 - [c19]Wenyu Shi, William Wehner, Justin Barton, Mark D. Boyer, Eugenio Schuster, Arnold Kritz, Didier Moreau, Tim C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
PTRANSP simulation and experimental test of a robust current profile and βN controller for off-axis current drive scenarios in the DIII-D tokamak. ACC 2013: 1225-1230 - [c18]Justin E. Barton, Wenyu Shi, Karim Besseghir, Jo Lister, Arnold Kritz, Eugenio Schuster, Timothy C. Luce, Michael L. Walker, David A. Humphreys, John R. Ferron:
Physics-based control-oriented modeling of the safety factor profile dynamics in high performance tokamak plasmas. CDC 2013: 4182-4187 - 2012
- [c17]Justin E. Barton, Mark D. Boyer, Wenyu Shi, Eugenio Schuster, Timothy C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
First-principles model-based robust control of the current profile evolution in the DIII-D tokamak. ACC 2012: 2134-2140 - [c16]Mark D. Boyer, Justin Barton, Eugenio Schuster, Tim C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
Backstepping control of the plasma current profile in the DIII-D tokamak. ACC 2012: 2996-3001 - [c15]Wenyu Shi, William Wehner, Justin Barton, Mark D. Boyer, Eugenio Schuster, Didier Moreau, Tim C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
Multivariable robust control of the plasma rotational transform profile for advanced tokamak scenarios in DIII-D. ACC 2012: 5037-5042 - [c14]William Wehner, Wenyu Shi, Eugenio Schuster, Didier Moreau, Michael L. Walker, John R. Ferron, Tim C. Luce, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
Optimal feedback control of the poloidal magnetic flux profile in the DIII-D tokamak based on identified plasma response models. ACC 2012: 5049-5054 - [c13]Mark D. Boyer, Justin Barton, Eugenio Schuster, Michael L. Walker, Timothy C. Luce, John R. Ferron, Ben G. Penaflor, Robert D. Johnson, David A. Humphreys:
Current profile tracking for the DIII-D tokamak via LQI optimal control. CDC 2012: 4341-4346 - [c12]Wenyu Shi, William Wehner, Justin Barton, Mark D. Boyer, Eugenio Schuster, Didier Moreau, Timothy C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys, Ben G. Penaflor, Robert D. Johnson:
A two-time-scale model-based combined magnetic and kinetic control system for advanced tokamak scenarios on DIII-D. CDC 2012: 4347-4352 - 2011
- [j7]Yongsheng Ou, Chao Xu, Eugenio Schuster, Timothy C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys:
Optimal Tracking Control of Current Profile in Tokamaks. IEEE Trans. Control. Syst. Technol. 19(2): 432-441 (2011) - [c11]William Wehner, Chao Xu, Eugenio Schuster, Didier Moreau, Didier Mazon, Michael L. Walker, David A. Humphreys, Yongkyoon In:
Data-driven modeling and feedback tracking control of the toroidal rotation profile for advanced tokamak scenarios in DIII-D. CCA 2011: 858-863
2000 – 2009
- 2009
- [j6]Michael L. Walker, David A. Humphreys:
On feedback stabilization of the tokamak plasma vertical instability. Autom. 45(3): 665-674 (2009) - [c10]Eugenio Schuster, David Sondak, Reza Arastoo, Michael L. Walker, David A. Humphreys:
Optimal tuning of tokamak plasma equilibrium controllers in the presence of time delays. CCA/ISIC 2009: 1188-1194 - 2008
- [c9]Chao Xu, Joseph N. Dalessio, Yongsheng Ou, Eugenio Schuster, Timothy C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys:
POD-based optimal control of current profile in tokamak plasmas via nonlinear programming. ACC 2008: 279-284 - [c8]Yongsheng Ou, Chao Xu, Eugenio Schuster, Tim C. Luce, John R. Ferron, Michael L. Walker, David A. Humphreys:
Closed-loop tracking control of poloidal magnetic flux profile in tokamaks. ACC 2008: 574-579 - [c7]Joseph N. Dalessio, Eugenio Schuster, David A. Humphreys, Michael L. Walker, Yongkyoon In, Jin-Soo Kim:
Extending the RWM stability region by optimal feedback control. CDC 2008: 3145-3150 - 2006
- [c6]Michael L. Walker, David A. Humphreys:
A Multivariable Analysis of the Plasma Vertical Instability in Tokamaks. CDC 2006: 2213-2219 - [c5]Yongkyoon In, Jin-Soo Kim, David A. Humphreys, Michael L. Walker:
Model-based Static and Dynamic Filter Application to Resistive Wall Mode Identification and Feedback Control in DIII-D. CDC 2006: 2250-2256 - 2005
- [j5]Eugenio Schuster, Michael L. Walker, David A. Humphreys, Miroslav Krstic:
Plasma vertical stabilization with actuation constraints in the DIII-D tokamak. Autom. 41(7): 1173-1179 (2005) - [j4]Oleg A. Chevtchenko, Helko E. van den Brom, Ernest Houtzager, Ralf Behr, Johannes Kohlmann, Jonathan M. Williams, Theodoor J. B. M. Janssen, Luis Palafox, David A. Humphreys, François P. M. Piquemal, Sophie Djordjevic, O. Monnoye, André Poletaeff, Rado Lapuh, Karl-Erik Rydler, Gunnar Eklund:
Realization of a quantum standard for AC voltage: overview of a European research project. IEEE Trans. Instrum. Meas. 54(2): 628-631 (2005) - [j3]David A. Humphreys, James Miall:
Traceable RF peak power measurements for mobile communications. IEEE Trans. Instrum. Meas. 54(2): 680-683 (2005) - [j2]David A. Humphreys, Matthew R. Harper, Andrew J. A. Smith, Ian M. Smith:
Vector calibration of optical reference receivers using a frequency-domain method. IEEE Trans. Instrum. Meas. 54(2): 894-897 (2005) - 2004
- [c4]Eugenio Schuster, Michael L. Walker, David A. Humphreys, Miroslav Krstic:
Toward the implementation of an anti-windup scheme for vertical and shape control in the DIII-D Tokamak. ACC 2004: 5286-5291 - 2003
- [c3]Eugenio Schuster, Michael L. Walker, David A. Humphreys, Miroslav Krstic:
Plasma vertical stabilization in the presence of coil voltage saturation in the DIII-D tokamak. ACC 2003: 2323-2328 - [c2]Eugenio Schuster, Miroslav Krstic, Michael L. Walker, David A. Humphreys:
Antiwindup scheme for plasma shape control with rate and magnitude actuation constraints in the DIII-D tokamak. CDC 2003: 4634-4639 - [c1]Michael L. Walker, David A. Humphreys, Eugenio Schuster:
Some nonlinear controls for nonlinear processes in the DIII-D tokamak. CDC 2003: 6565-6571
1990 – 1999
- 1993
- [j1]Maurice G. Cox, Peter M. Harris, David A. Humphreys:
An algorithm for the removal of noise and jitter in signals and its application to picosecond electrical measurement. Numer. Algorithms 5(10): 491-508 (1993)
Coauthor Index
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