My research is focused on feedback control theory and its applications. A recurrent theme has been to balance the simplicity and insight of classical control with the power and potential of digital control implementation to address nonlinear control problems. The focus is systems with actuator nonlinearities such as saturation, rate constraints, backlash and hysteresis.

I am interested in multiplier theory within the framework of absolute stability theory. Recent highlights include new frequency domain characterisations of both the continuous-time O'Shea-Zames-Falb multipliers and their discrete-time counterparts. I apply these techniques to model predictive control and antiwindup. 

Ysgol Cyfrifiadureg a Pheirianneg

Prifysgol Bangor

Stryd y Deon

Bangor

Gwynedd

LL57 1UT

e-bost: w.heath@bangor.ac.uk

2024

• CyhoeddwydPhase Limitations of Multipliers at Harmonics
  Heath, W. P., Carrasco, J. & Zhang, J., 1 Ion 2024, Yn: IEEE Transactions on Automatic Control. 69, 1, t. 566–573
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• E-gyhoeddi cyn argraffuPhase Limitations of Multipliers for Nonlinearities With Monotone Bounds
  Heath, W. & Carrasco, J., 16 Hyd 2024, (E-gyhoeddi cyn argraffu) Yn: IEEE Transactions on Automatic Control. t. 1-8 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• CyhoeddwydDuality Bounds for Discrete-Time Zames-Falb Multipliers
  Zhang, J., Carrasco, J. & Heath, W. P., 1 Gorff 2022, Yn: IEEE Transactions on Automatic Control. 67, 7, t. 3521-3528 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMultipliers for Nonlinearities With Monotone Bounds
  Heath, W. P., Carrasco, J. & Altshuller, D. A., 1 Chwef 2022, Yn: IEEE Transactions on Automatic Control. 67, 2, t. 910-917 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydWavelet Package Energy Transmissibility Function and Its Application to Wind Turbine Blade Fault Detection
  Wang, X., Liu, Z., Zhang, L. & Heath, W. P., 1 Rhag 2022, Yn: IEEE Transactions on Industrial Electronics. 69, 12, t. 13597–13606
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2021

• CyhoeddwydAbsolute stability
  Carrasco, J. & Heath, W. P., 11 Tach 2021, Wiley Encyclopedia of Electrical and Electronics Engineering.
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cofnod mewn Gwyddoniadur/Geiriadur › adolygiad gan gymheiriaid
• CyhoeddwydRobust Stability of Barrier-Based Model Predictive Control
  Petsagkourakis, P., Heath, W. P., Carrasco, J. & Theodoropoulos, C., 1 Ebr 2021, Yn: IEEE Transactions on Automatic Control. 66, 4, t. 1879-1886 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2020

• CyhoeddwydConvex Searches for Discrete-Time Zames-Falb Multipliers
  Carrasco, J., Heath, W. P., Zhang, J., Ahmad, N. S. & Wang, S., 1 Tach 2020, Yn: IEEE Transactions on Automatic Control. 65, 11, t. 4538-4553 16 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydHigh Speed Crop and Weed Identification in Lettuce Fields for Precision Weeding
  Elstone, L., How, K. Y., Brodie, S., Ghazali, M. Z., Heath, W. P. & Grieve, B., 14 Ion 2020, Yn: Sensors. 20, 2
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2018

• CyhoeddwydAbsolute Stability of Systems With Integrator and/or Time Delay via Off-Axis Circle Criterion
  Zhang, J., Tugal, H., Carrasco, J. & Heath, W. P., 1 Gorff 2018, Yn: IEEE Control Systems Letters. 2, 3, t. 411-416 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPhase Limitations of Zames-Falb Multipliers
  Wang, S., Carrasco, J. & Heath, W. P., 1 Ebr 2018, Yn: IEEE Transactions on Automatic Control. 63, 4, t. 947-959 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2016

• CyhoeddwydAn internal model control approach to mid-ranging control
  Gayadeen, S. & Heath, W., 23 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 42, 11, t. 542-547 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydAnti-windup and the preservation of robustness against structured norm-bounded uncertainty
  Morales, R. M., Li, G. & Heath, W. P., 25 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 41, 2, t. 14144-14149
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydConditions for attaining the global minimum in maximum likelihood system identification
  Zou, Y. & Heath, W. P., 21 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 42, 10, t. 1110-1115 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydControlling a quadruple tanks rig with plcs as a masters dissertation project
  Carrasco, J., Heath, W. P., Liñan, M. C. R., Alli-Oke, R., Kerim, O. A. R. A. & Gutierrez, S. R., 21 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 10, 17, t. 238-243 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydImproved multipliers for input-constrained model predictive control
  Heath, W. P. & Li, G., 25 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 41, 2, t. 15160-15165
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLyapunov functions for generalized discrete-time multivariable Popov criterion
  Ahmad, N. S., Heath, W. P. & Li, G., 25 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 44, 1, t. 3392-3397 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydModified internal model control anti-windup : Some new insights and interpretations
  Adegbege, A. A. & Heath, W. P., 21 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 7, PART 1, t. 282-287 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRegularised estimators for ARFIMA processes
  Vivero, O. & Heath, W. P., 21 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 45, 16, t. 298-303 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRobust anti-windup compensator synthesis via Integral Quadratic Constraints
  Li, G., Heath, W. P. & Herrmann, G., 25 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 44, 1, t. 14477-14482 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe inherent robustness of constrained linear model predictive control
  Heath, W. P. & Wills, A. G., 16 Mai 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 38, 1, t. 71-76 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe robustness of input constrained model predictive control to infinity-norm bound model uncertainty
  Heath, W. P., Li, G., Wills, A. G. & Lennox, B., 21 Ebr 2016, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 39, 9, t. 495-500 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2015

• CyhoeddwydAn improved stability criterion for a class of Lur'e systems
  Li, G., Heath, W. P. & Lennox, B., 1 Ion 2015, Yn: Automatica. 51, t. 4483-4488 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEnhanced Tracking for Nanopositioning Systems Using Feedforward/Feedback Multivariable Control Design
  Kara-Mohamed, M., Heath, W. P. & Lanzon, A., 1 Mai 2015, Yn: IEEE Transactions on Control Systems Technology. 23, 3, t. 1003-1013 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMultivariable algebraic loops with complementarity constraints enforcing some KKT conditions
  Adegbege, A. A. & Heath, W. P., 5 Chwef 2015, t. 1033-1039. 7 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2014

• CyhoeddwydAnti-windup and the preservation of robustness against structured norm-bounded uncertainty
  Morales, R. M., Li, G. & Heath, W. P., 25 Tach 2014, Yn: International Journal of Robust and Nonlinear Control. 24, 17, t. 2640-2652 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDesign of cross-directional controllers with optimal steady state performance
  Heath, W. P. & Wills, A. G., 1 Ion 2014, Yn: European Journal of Control. 10, 1, t. 15-27 13 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFeedforward/feedback multivariable control design for high speed nanopositioning
  Mohamed, M. K., Heath, W. P. & Lanzon, A., 2014, Yn: 2014 European Control Conference, ECC 2014. t. 1939-1944 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLMI searches for anticausal and noncausal rational Zames-Falb multipliers
  Carrasco, J., Maya-Gonzalez, M., Lanzon, A. & Heath, W. P., 1 Awst 2014, Yn: Systems and Control Letters. 70, t. 17-22 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLMI searches for discrete-time Zames-Falb multipliers
  Ahmad, N. S., Carrasco, J. & Heath, W. P., 10 Maw 2014, t. 5258-5263. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydOn multipliers for bounded and monotone nonlinearities
  Carrasco, J., Heath, W. P. & Lanzon, A., 1 Ebr 2014, Yn: Systems and Control Letters. 66, 1, t. 65-71 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTwo-stage multivariable IMC antiwindup (TMIA) control of a quadruple tank process using a PLC
  King-Hans, A. R., Heath, W. P. & Alli-Oke, R., 11 Rhag 2014, t. 1681-1686. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2013

• CyhoeddwydController structure for plants with combined saturation and deadzone/backlash
  Del Carmen Rodriguez Linan, M. & Heath, W. P., 7 Ion 2013, t. 1394-1399. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydConvex synthesis of multivariable static discrete-time anti-windup via the Jury-Lee criterion
  Syazreen Ahmad, N. & Heath, W. P., 2013, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 46, 23, t. 546-551 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDesign of multi-array controllers for electron beam stabilisation on synchrotrons
  Gayadeen, S., Duncan, S. R. & Heath, W. P., 15 Awst 2013, Yn: Proceedings of the American Control Conference. t. 1201-1206 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDeveloping a student-focused undergraduate laboratory
  Heath, W. P., Onel, O., Green, P. M., Lennox, B., Gai, Z., He, Z. & Rodriguez Liñan, M. C., 2013, Yn: International Journal of Electrical Engineering Education. 50, 3, t. 268-278 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEquivalence between classes of multipliers for slope-restricted nonlinearities
  Carrasco, J., Heath, W. P. & Lanzon, A., 1 Meh 2013, Yn: Automatica. 49, 6, t. 1732-1740 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEquivalence between classes of multipliers for slope-restricted nonlinearities
  Carrasco, J., Heath, W. P. & Lanzon, A., 13 Chwef 2013, t. 2262-2267. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydLMI search for rational anticausal Zames-Falb multipliers
  Carrasco, J., Maya-Gonzalez, M., Lanzon, A. & Heath, W. P., 4 Chwef 2013, t. 7770-7775. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydLMI-based stability criteria for discrete-time lur'e systems with monotonic, sector- and slope-restricted nonlinearities
  Ahmad, N. S., Heath, W. P. & Li, G., 1 Chwef 2013, Yn: IEEE Transactions on Automatic Control. 58, 2, t. 459-465 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOn multipliers for bounded and monotone nonlinearities
  Carrasco, J., Heath, W. P. & Lanzon, A., Gorff 2013, 2013 European Control Conference (ECC). IEEE, t. 1711-1716 6 t.
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cyfraniad i Gynhadledd › adolygiad gan gymheiriaid
• CyhoeddwydRevisited Jury-Lee criterion for multivariable discrete-time Lur'e systems: Convex LMI search
  Ahmad, N. S., Carrasco, J. & Heath, W. P., 4 Chwef 2013, t. 2268-2273. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydStudent-focused undergraduate laboratory development: Position control of a printer head
  Heath, W. P., Onel, O., Green, P. M., Lennox, B., Gai, Z., He, Z. & Liñan, M. C. R., 13 Medi 2013, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 46, 17, t. 232-237 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThemed project case study: Quadruple tanks control with PLCs
  Carrasco, J., Heath, W. P., Rodriguez Liñan, M. C., Alli-Oke, R., Abdel Kerim, O. A. R. & Rodriguez Gutierrez, S., Gorff 2013, Yn: International Journal of Electrical Engineering Education. 50, 3, t. 279-292 14 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2012

• CyhoeddwydA regularised estimator for long-range dependent processes
  Vivero, O. & Heath, W. P., 1 Chwef 2012, Yn: Automatica. 48, 2, t. 287-296 10 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydA robust Kalman conjecture for first-order plants
  Alli-Oke, R., Carrasco, J., Heath, W. P. & Lanzon, A., 24 Meh 2012, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 45, 13, t. 27-32 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydAnti-windup synthesis for optimizing internal model control
  Adegbege, A. A. & Heath, W. P., 1 Maw 2012, t. 5503-5508. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydComments on "on the existence of stable, causal multipliers for systems with slope-restricted nonlinearities"
  Carrasco, J., Heath, W. P., Li, G. & Lanzon, A., 1 Medi 2012, Yn: IEEE Transactions on Automatic Control. 57, 9, t. 2422-2428 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFactorization of multipliers in passivity and IQC analysis
  Carrasco, J., Heath, W. P. & Lanzon, A., 1 Mai 2012, Yn: Automatica. 48, 5, t. 909-916 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFactorization of multipliers in passivity and IQC analysis
  Carrasco, J., Heath, W. P. & Lanzon, A., 1 Maw 2012, t. 6054-6059. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydGlobal convergence conditions in maximum likelihood estimation
  Zou, Y. & Heath, W. P., Mai 2012, Yn: International Journal of Control. 85, 5, t. 475-490 16 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMPC for Plants subject to saturation and deadzone, backlash or stiction
  Del Carmen Rodriguez Linan, M. & Heath, W. P., 2012, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 45, 17, t. 418-423 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRobust anti-windup synthesis for directionality compensation
  Adegbege, A. A. & Heath, W. P., 24 Meh 2012, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 45, 13, t. 276-281 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRobustness preserving anti-windup for SISO systems
  Morales, R. M., Heath, W. P. & Li, G., 1 Maw 2012, t. 639-644. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2011

• CyhoeddwydInternal model control design for input-constrained multivariable processes
  Adegbege, A. A. & Heath, W. P., 31 Rhag 2011, Yn: AIChE Journal. 57, 12, t. 3459-3472 14 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLyapunov functions for discrete-time multivariable Popov criterion with indefinite multipliers
  Ahmad, N. S., Heath, W. P. & Li, G., 22 Chwef 2011. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydRegularised estimators for fractional Gaussian noise
  Vivero, O. & Heath, W. P., 22 Chwef 2011, t. 5025-5030. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydRobustness preserving antiwindup: Examples and counterexamples
  Heath, W. P., Morales, R. & Li, G., 13 Hyd 2011, t. 204-209. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydSimple robustness measures for control of MISO and SIMO plants
  Heath, W. P. & Gayadeen, S., 1 Ion 2011, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 44, 1, t. 11356-11361 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe robustness and design of constrained cross-directional control via integral quadratic constraints
  Morales, R. M. & Heath, W. P., 4 Chwef 2011, Yn: IEEE Transactions on Control Systems Technology. 19, 6, t. 1421-1432 12 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2010

• CyhoeddwydMultipliers for model predictive control with structured input constraints
  Heath, W. P. & Li, G., 30 Maw 2010, Yn: Automatica. 46, 3, t. 562-568 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOn MLE methods for dynamical systems with fractionally differenced noise spectra
  Vivero, O. & Heath, W. P., 29 Ion 2010, t. 1842-1847. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydThe quantification of large SNR for MLE of ARARMAX models
  Zou, Y. & Heath, W. P., 29 Ion 2010, t. 5108-5113. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydTwo-stage multivariable antiwindup design for internal model control
  Adegbege, A. A. & Heath, W. P., 30 Medi 2010, Yn: IFAC Proceedings Volumes (IFAC-PapersOnline). 43, 5, t. 290-295 6 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2009

• CyhoeddwydLyapunov functions for the multivariable Popov criterion with indefinite multipliers
  Heath, W. P. & Li, G., 1 Rhag 2009, Yn: Automatica. 45, 12, t. 2977-2981 5 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRobust anti-windup against LTI uncertainty using frequency dependent IQCs
  Morales, R. M., Heath, W. P. & Li, G., 13 Tach 2009, t. 3329-3334. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2008

• CyhoeddwydConcise stability conditions for systems with static nonlinear feedback expressed by a quadratic program
  Li, G., Heath, W. P. & Lennox, B., 1 Gorff 2008, Yn: IET Control Theory and Applications. 2, 7, t. 554-563 10 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2007

• CyhoeddwydInterior-point algorithms for nonlinear model predictive control
  Wills, A. G. & Heath, W. P., 2007, Lecture Notes in Control and Information Sciences. 1 gol. Springer, Cyfrol 358. t. 207-216 10 t. (Lecture Notes in Control and Information Sciences).
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid
• CyhoeddwydSelf-tuning prediction and control for two-dimensional processes part 2: parameter estimation, set-point tracking and offset handling
  Heath, W. P. & Wellstead, P. E., 22 Hyd 2007, Yn: International Journal of Control. 62, 2, t. 239-269 31 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe stability analysis of systems with nonlinear feedback expressed by a quadratic program
  Li, G., Heath, W. P. & Lennox, B., 7 Mai 2007, t. 4247-4252. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydZames-Falb multipliers for quadratic programming
  Heath, W. P. & Wills, A. G., 15 Hyd 2007, Yn: IEEE Transactions on Automatic Control. 52, 10, t. 1948-1951 4 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2006

• CyhoeddwydRobust stability analysis of constrained cross-directional control via integral quadratic constraints
  Morales, R. M. & Heath, W. P., 31 Rhag 2006, t. 6199-6204. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydZames-Falb multipliers for quadratic programming
  Heath, W. P. & Wills, A. G., 30 Ion 2006, t. 963-968. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2005

• CyhoeddwydA sufficient condition for the stability of optimizing controllers with saturating actuators
  Heath, W. P., Wills, A. G. & Akkermans, J. A. G., 1 Awst 2005, Yn: International Journal of Robust and Nonlinear Control. 15, 12, t. 515-529 15 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydApplication of barrier function based model predictive control to an edible oil refining process
  Wills, A. G. & Heath, W. P., 1 Maw 2005, Yn: Journal of Process Control. 15, 2, t. 183-200 18 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydChoice of weighting for averaged non-parametric transfer function estimates
  Heath, W. P., 16 Mai 2005, t. 833-838. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydConstruction of an online reduced-spectrum NIR calibration model from full-spectrum data
  Dodds, S. A. & Heath, W. P., 28 Maw 2005, Yn: Chemometrics and Intelligent Laboratory Systems. 76, 1, t. 37-43 7 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2004

• CyhoeddwydAn Exterior/Interior-point Approach to Infeasibility in Model Predictive Control
  Wills, A. G. & Heath, W. P., 15 Maw 2004, t. 3701-3705. 5 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydBarrier function based model predictive control
  Wills, A. G. & Heath, W. P., 1 Awst 2004, Yn: Automatica. 40, 8, t. 1415-1422 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRobust cross-directional control of paper making machines with saturating actuators
  Akkermans, J. A. G., Wills, A. G. & Heath, W. P., 2 Maw 2004, Yn: Control Systems, Preprints, Conference. t. 63-70 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe variance of non-parametric errors-in-variables estimates
  Heath, W. P., 15 Maw 2004, t. 6027-6032. 9 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2003

• CyhoeddwydThe variations of non-parametric estimates in closed-loop
  Heath, W. P., 1 Tach 2003, Yn: Automatica. 39, 11, t. 1849-1863 15 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTwo measures of variation for non-parametric estimates in closed-loop
  Heath, W. P., 10 Maw 2003, t. 2627-2632. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2002

• CyhoeddwydA recentred barrier for constrained receding horizon control
  Wills, A. G. & Heath, W. P., 7 Tach 2002, t. 4177-4182. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydAnalysis of steady-state performance for cross-directional control
  Wills, A. G. & Heath, W. P., 1 Medi 2002, Yn: IEE Proceedings: Control Theory and Applications. 149, 5, t. 433-440 8 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydApplication of basis functions to the cross-directional control of web processes
  Duncan, S. R., Heath, W. P., Halouskova, A. & Karny, M., 6 Awst 2002, t. 1278-1283. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydConfidence regions and experiment design for non-parametric estimation
  Heath, W. P., 6 Awst 2002, t. 3930-3935. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
• CyhoeddwydModel correction for a class of spatio-temporal systems
  Moheimani, S. O. R. & Heath, W. P., 1 Ion 2002, Yn: Automatica. 38, 1, t. 147-155 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydModel correction for a class of spatio-temporal systems
  Moheimani, S. O. R. & Heath, W. P., 6 Awst 2002, t. 3768-3772. 5 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

2001

• CyhoeddwydBias of indirect non-parametric transfer function estimates for plants in closed loop
  Heath, W. P., 1 Hyd 2001, Yn: Automatica. 37, 10, t. 1529-1540 12 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2000

• CyhoeddwydDynamic modeling of cross-directional actuators: implications for control
  Duncan, S. R., Allwood, J. M., Heath, W. P. & Corscadden, K. W., 1 Gorff 2000, Yn: IEEE Transactions on Control Systems Technology. 8, 4, t. 667-675 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

1998

• CyhoeddwydIdentification and control of web processes: Polymer film extrusion
  Wellstead, P. E., Heath, W. P. & Kjaer, A. P., 1 Maw 1998, Yn: Control Engineering Practice. 6, 3, t. 321-331 11 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

1997

• CyhoeddwydOn-line sensing of paper machine wet-end properties: Dry-line detector
  Kjaer, A. P., Wellstead, P. E. & Heath, W. P., 1 Tach 1997, Yn: IEEE Transactions on Control Systems Technology. 5, 6, t. 571-585 15 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTwo-dimensional methods for MD and CD estimation and control: Recent progress - An outline of developments and how they relate to sensor research
  Wellstead, P. E., Zarrop, M. B., Heath, W. P., Kjaer, A. P. & Troyas, X., 1 Medi 1997, Yn: Pulp and Paper Canada. 98, 9, t. 72-76 5 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

1996

• CyhoeddwydCrank-angle based control of high speed diesel engines
  Scotson, P. G. & Heath, W. P., 1 Chwef 1996, Yn: SAE Technical Papers.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOrthogonal functions for cross-directional control of web forming processes
  Heath, W. P., 1 Chwef 1996, Yn: Automatica. 32, 2, t. 183-198 16 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTwo dimensional methods for machine direction and cross direction estimation and control
  Wellstead, P. E., Zarrop, M. B., Heath, W. P., Kjaer, A. P. & Troyas, X., 1996, Yn: Control Systems, Preprints, Conference. t. 5-8 4 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

1995

• CyhoeddwydIdentification of cross-directional behaviour in web production: Techniques and experience
  Kjaer, A. P., Heath, W. P. & Wellstead, P. E., 1 Ion 1995, Yn: Control Engineering Practice. 3, 1, t. 21-29 9 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSelf-tuning prediction and control for two-dimensional processes part 1: fixed parameter algorithms
  Heath, W. P. & Wellstead, P. E., Ion 1995, Yn: International Journal of Control. 62, 1, t. 65-107 43 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

1994

• CyhoeddwydTwo-dimensional control systems: application to the CD and MD control problem
  Wellstead, P. E. & Heath, W. P., Chwef 1994, Yn: Pulp and Paper Canada. 95, 2, t. 48-51 3 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

201

• CyhoeddwydStability conditions for constrained two-stage internal model control
  Adegbege, A. A. & Heath, W. P., 22 Chwef 0201, t. 5251-5256. 6 t.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid