David A. Humphreys

Publication Activity (10 Years)

Years Active: 1993-2023
Publications (10 Years): 8

Top Topics

Explicit Expressions

Design Concepts

Top Venues

IEEE Trans. Instrum. Meas.

Publications

Andres Pajares, William P. Wehner, Anders S. Welander, Eugenio Schuster, David A. Humphreys
A Reference Governor for Plasma-Shape Control in Tokamaks. CCTA (2023)
Zibo Wang, Hexiang Wang, Eugenio Schuster, Zhengping Luo, Yao Huang, Qiping Yuan, Bingjia Xiao, David A. Humphreys, Sai Tej Paruchuri
. ACC (2023)
Luca Zabeo, Peter C. De Vries, J. A. Snipes, T. Ravensbergen, Y. Gribov, G. Raupp, W. Treutterer, Alfredo Pironti, Gianmaria De Tommasi, Marcello Cinque, M. 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)
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)
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)
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) (2017)
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)
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)
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) (2015)
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)
David A. Humphreys, Martin Hudlicka, Irshaad Fatadin
Calibration of Wideband Digital Real-Time Oscilloscopes. IEEE Trans. Instrum. Meas. 64 (6) (2015)
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) (2014)
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)
David A. Humphreys, James Miall
Traceable Measurement of Source and Receiver EVM Using a Real-Time Oscilloscope. IEEE Trans. Instrum. Meas. 62 (6) (2013)
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)
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)
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)
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)
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)
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)
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)
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)
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) (2011)
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)
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)
Michael L. Walker, David A. Humphreys
On feedback stabilization of the tokamak plasma vertical instability. Autom. 45 (3) (2009)
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)
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)
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)
Michael L. Walker, David A. Humphreys
A Multivariable Analysis of the Plasma Vertical Instability in Tokamaks. CDC (2006)
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)
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) (2005)
Eugenio Schuster, Michael L. Walker, David A. Humphreys, Miroslav Krstic
Plasma vertical stabilization with actuation constraints in the DIII-D tokamak. Autom. 41 (7) (2005)
David A. Humphreys, James Miall
Traceable RF peak power measurements for mobile communications. IEEE Trans. Instrum. Meas. 54 (2) (2005)
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) (2005)
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)
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)
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)
Michael L. Walker, David A. Humphreys, Eugenio Schuster
Some nonlinear controls for nonlinear processes in the DIII-D tokamak. CDC (2003)
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) (1993)