Professor Qing-Chang Zhong

Research Chair in Control of Power Systems
Distinguished Lecturer, IEEE Control Systems Society
Distinguished Lecturer, IEEE Power Electronics Society
McGraw Endowed Chair Professor, Illinois Institute of Technology

Professor Qing-Chang ZhongAddress:
Professor Qing-Chang Zhong MSc, DIC, PhD, FIET, SMIEEE
Department of Automatic Control and Systems Engineering
University of Sheffield
Sheffield
S1 3JD
Tel: (+44) (0)114 222 5630
Email: q.zhong@sheffield.ac.uk


Background

Distinguished Lecturer, IEEE Control Systems Society, 2015 -
Distinguished Lecturer, IEEE Power Electronics Society, 2014 -
Scientific Advisory Board Member, NSF FREEDM Systems Center, North Carolina State University, 2014
UK Representative, European Control Association, 2013 - 2015
Associate Editor, IEEE Trans. on Automatic Control, Jan. 2015 -
Associate Editor, IEEE Trans. on Control Systems Technology, Jan. 2014 -
Associate Editor, IEEE Trans. on Power Electronics, Nov. 2010 -
Associate Editor, IEEE Trans. on Industrial Electronics, Mar. 2014 -
Associate Editor, European Journal of Control, Jan. 2014 -
Associate Editor, IEEE Access, March 2013 -
Associate Editor, IEEE Journal of Emerging and Selected Topics in Power Electronics, 2013 -
Member, EPSRC Peer Review College, 2012 -
EPSRC-funded sabbatical, Virginia Tech., USA, 2012 - 2013
EPSRC-funded sabbatical, University of California, San Diego, USA, 2012
Professor, Loughborough University, UK, 2010 - 2012
Senior Research Fellow, Royal Academy of Engineering/Leverhulme Trust, UK, 2009 - 2010
Senior Lecturer, The University of Liverpool, UK, 2005 - 2010
Senior Lecturer then Reader, University of Glamorgan, UK, 2004 - 2005
Research Associate, Imperial College London, UK, 2001 - 2003
Research Associate, Technion-Israel Institute of Technology, Israel, 2000 - 2001
Research Assistant, Shanghai Jiao-Tong University, China, 1997 - 2000
Research Assistant, Hunan University, China, 1994 - 1997
Assistant Lecturer, Hunan Institute of Engineering, China, 1990 - 1994

Personal website: http://mypages.iit.edu/~qzhong2/

Latest Developments

What's next after self-healing? How about a self-directed smart grid --- Architecture for the next-generation smart grid.

Completely Self-Controlled Power Systems Are Proposed, IEEE Spectrum

How to Achieve Completely Autonomous Power in the Next Generation of Smart Grids, IEEE Smart Grid

Largest OPAL-RT Real Time Digital Simulator in Europe and North America

UDE-based Control of Unmanned Aerial Vehicles

Grants

  • M.P. Foster, D.A. Stone, P. Hall. Q.-C. Zhong and D.T. Gladwin, Grid Connected Energy Storage Research Demonstrator (Project funding: £4.2M), EPSRC, 10/2013- 12/2014, £838,147.
  • Q.-C. Zhong and M. Krstic, Distinguished Visiting Fellowship: Robust control of systems with delays and control applications in energy systems, Royal Academy of Engineering, 05/2013-12/2013, £6,000.
  • Q.-C. Zhong, Developing Fundamental Theory and Enabling Technologies for Parallel Operation of Inverters to Facilitate Large-scale Utilisation of Renewable Energy, EPSRC,10/2012-09/2015, £459,598.
  • Q.-C. Zhong, International Collaboration Sabbatical: To Foster Long-term Collaboration with Leading Control and Power Electronics Experts in the USA, EPSRC,09/2011-09/2012, £179,167.
  • R. Thring (PI), G. Offer, M. McCulloch, Q.-C. Zhong, F.Assadian, K. J. Burnham, J. Marco, N. Brandon, R.Martinez-Botas, T. Larkowski, D. A. Howey, Developing FUTURE Vehicles (Fundamental Understanding of Technologies for Ultra Reduced Emission Vehicles) (Project funding: £3.5M), EPSRC,09/2011-08/2015, £571,423.
  • Q.-C. Zhong, Charging Systems with Grid Support for Electric Vehicles, EPSRC (KTA), 09/2011-09/2012, £126,530
  • Q.-C. Zhong, Further Development of the Synchronverter Tech. to Increase its Technology-Readiness Level, EPSRC (KTA),06/2010-05/2011, £120,447
  • Q.-C. Zhong, HOMES: High-efficiency Off-grid Multi-source Electrical Supplies, EPSRC, PSW & TSB (KTP),08/2010-10/2012, £181,527.
  • Q.-C. Zhong, Development of common key technology for grid connection in distributed generation and renewable energy, Royal Academy of Engineering, 09/2009-09/2010, £41,292.
  • P. Stewart (PI), Q.-C. Zhong and M. Eftekhari, Feasibility Study of Energy Recovery from Landing Aircraft (Project funding:£199, 224), EPSRC, 07/2009-06/2010, £111,759.
  • Q.-C. Zhong, Software Re-configurable Control Circuitry, EPSRC  (DHPA) and add2 Ltd, UK, 10/2008- 09/2012, £90,000
  • Q.-C. Zhong, Control System Design for the newly-invented Nheolis ATG Wind turbine, EPSRC (DHPA) and Nheolis, France, 10/2008- 09/2012, £90,000.
  • Q.-C. Zhong (PI), A.C. Zolotas, D. Coca, K. Li and S.Evangelou, New-ACE: A Network of New Academics in Control Engineering, EPSRC, 10/2007-09/2010, £87,800.
  • Q.-C. Zhong, Control and Stability Analysis of Time-Delay Systems, EPSRC, 09/2005-09/2008, £126,413.

Research Interests

Control Theory:

  • Robust/H-infinity control
  • Time-delay systems
  • UDE (Uncertainty and Disturbance Estimator)-based control

Applications in Electrical Engineering:

  • Control of inverters: Power quality improvement, neutral line provision, grid-friendly connection of renewable energy sources, parallel operation of inverters
  • Electric drives
  • Renewable energy and distributed generation, in particular,wind power
  • Energy recovery and storage systems
  • HOMES: High-efficiency Off-grid Multi-source Electrical Supplies

Applications in Aeronautical Engineering:

  • Engine control
  • Energy recovery from landing aircraft
  • Aircraft power systems

Applications in Automotive Engineering:

  • Hybrid electrical vehicles
  • EV charging systems with grid support (V2G)
  • EV drive systems
  • Energy management
  • Hardware-in-the-loop simulation (HIL) and rapid control prototyping (RCP)

Applications in Chemical Engineering:

  • Integral processes with dead time
  • Continuous Stirred Tank Reactors (CSTR)

Professional Activities

  • Associate Editor, Conference Editorial Board of the IEEE Control Systems Society, July 2009 -
  • Guest Associate Editor, Special Issue on Wind Applications, IEEE Journal of Emerging and Selected Topics in Power Electronics, 2013.
  • Guest Associate Editor, IEEE Trans. on Power Electronics for the special issue on Power Electronics for Microgrids, 2010.
  • Italian Evaluation of Research Quality exercise (VQR2004-2010), Italian Ministry of Education, University and Research, 2012.
  • Netherlands NOW, reviewer of grant proposals, 2013.
  • Israel Science Foundation (ISF), reviewer of grant proposals, 2013.
  • Fellow of The Institute of Engineering and Technology (FIET)
  • Senior Member of IEEE, 2004 -
  • Vice Chair, IFAC Technical Committee 6.3 (Power and Energy Systems), 2011 -
  • Vice Chair, IFAC Technical Committee 2.2 (Linear Control Systems), 2011 -
  • Founding Director of the Network for New Academics in Control Engineering and related areas (New-ACE),originally funded by EPSRC and now a Group Member of UK Automatic Control Council (UKACC), 2007 - 2011
  • Member, IEEE CSS Technical Committee on Systems with Uncertainty, 2010 -
  • Member, IEEE CSS Technical Committee on Power Generation, 2010-
  • Member, IFAC Technical Committee 2.2 (Linear control systems), 2006 - 2011
  • Member, IChemE Process Management and Control Subject Group Comm., 2009- 2011
  • International Editorial Board Member of Journal of the Chinese Institute of Engineers, 2003-2008

Keynote Lectures or Plenary Talks at:

  • the 5th International Conference on Power Engineering, Energy and Electrical Drives, Riga, Latvia, May 11-13, 2015.
  • the 1st Indian Systems and Controls Conference, Chennai, Jan. 5-7, 2015.
  • the 26th Chinese Control and Decision Conference (CCDC), Changsha, China, May 31-June 2, 2014.
  • Delta Power Electronics Forum, Suzhou, China, May 30, 2014.
  • 2014 IEEE International Energy Conference, Croatia, May 13-16, 2014.
  • the 8th Symposium on Power Electronics and Electrical Drives (SPEED), Wuhan, China, April 11-13, 2014.
  • the 6th IEEE Annual Green Technologies Conference in Corpus Christi, Texas, April 3-4, 2014.
  • the 3rd Int. Conference on Advances in Control and Optimization of Dynamical Systems (ACODS), IIT Kanpur, India, March 13-15, 2014.
  • the 29th Annual Conference of Chinese Universities on Electric Power Systems and Automation, Yichang, China, Nov. 7-10, 2013.
  • the 4th IEEE Conference on Power Electronics for Distributed Generation Systems (PEDG) in Rogers, Arkansas, July 8 – 11, 2013.

Awards

  • Distinguished Lecturer, IEEE Control Systems Society, June 2015.
  • Distinguished Lecturer, IEEE Power Electronics Society (2014-2015), September 2013.
  • Highly Commended Certificate at the IET Innovation Awards 2009for synchronverters (jointly with G. Weiss), November 2009.
  • Best Doctoral Thesis (the Eryl Cadwaladar Davies Prize), Imperial College London, 2004.
  • Outstanding Reviewer for Automatica, 2004

Research Monographs

  1. Q.-C. Zhong and T. Hornik, Control of Power Inverters in Renewable Energy and Smart Grid Integration, Wiley-IEEEPress, 2012, available for download (with subscription or payment) at http://ieeexplore.ieee.org/xpl/bkabstractplus.jsp?bkn=6381785and http://onlinelibrary.wiley.com/book/10.1002/9781118481806.
  2. A. Visioli and Q.-C. Zhong, Control of Integral Processes with Dead Time, Springer-Verlag Limited, London, 2010, available for download (with subscription or payment) at http://www.springer.com/engineering/robotics/book/978-0-85729-069-4.
  3. Q.-C. Zhong, Robust Control of Time-delay Systems.ISBN:1-84628-264-0. Springer-Verlag Limited, London, 2006, available for download (with subscription or payment) at http://www.springer.com/engineering/control/book/978-1-84628-264-5.
    Cover for CPI book Thumbnail image for IPDT book Thumbnail of book cover

Selected Journal Papers

(The links to the pdf files are provided for the personal use of the authors. Please note that you are allowed to download these files ONLY if you have the legal rights to do so.)

  1. Q.-C. Zhong, G.C. Konstantopoulos, B. Ren and M. Krstic, Improved Synchronverters with Bounded Frequency and Voltage for Smart Grid Integration, IEEE Trans. on Smart Grid, vol. xx, no.x, xxx-xxx, 2016.
  2. Q.-C. Zhong,  W.-L. Ming, X. Cao and M. Krstic, Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors, IEEE Access, vol. 4, pp. x-x, 2016.
  3. X. Zhang, Q.-C. Zhong, and W.-L. Ming, A Virtual RLC Damper to Stabilize DC/DC Converters Having an LC Input Filter while Improving the Filter Performance, IEEE Transactions on Power Electronics, vol. 31, no. x, pp. xxxx-xxxx, 2016.
  4. G. Konstantopoulos, Q.-C. Zhong, and W.-L. Ming, PLL-less Nonlinear Current-limiting Controller for Single-phase Grid-tied Inverters: Design, Stability analysis and Operation Under Grid Faults, IEEE Trans. on Industrial Electronics, vol.63, no.x, pp. xxx-xxx, 2016.
  5. R. Sanz-Diaz, P.J. Garcia Gil, Q.-C. Zhong and P. Albertos, Robust Control of Quadrotors Based on an Uncertainty and Disturbance Estimator, ASME J. Dyn. Syst., Meas., Control, vol. 138, xxx, xx-xx, 2016.
  6. H. Wu, X. Ruan, D. Yang, X. Chen, Q.-C. Zhong and Z. Lv, Small-Signal Modelling and Parameters Design for Virtual Synchronous Generators, IEEE Trans. on Industrial Electronics, vol.63, no.x, pp. xxx-xxx, 2016.
  7. J. Chen, B. Ren, and Q.-C. Zhong, UDE-based Trajectory Tracking Control of Piezoelectric Stages, IEEE Trans. on Industrial Electronics, vol.63, no.x, pp. xxx-xxx, 2016.
  8. G.C. Konstantopoulos, Q.-C. Zhong, B. Ren and M. Krstic, Bounded Integral Control of Input-to-State Practically Stable Non-linear Systems to Guarantee Closed-loop Stability, IEEE Trans. on Automatic Control, vol. 61, no.x, xxx-xxx, 2016.
  9. Q.-C. Zhong and Y. Zeng, Universal Droop Control of Inverters with Different Types of Output Impedance, IEEE Access, vol. 4, pp. 702-712, 2016.
  10. X. Zhang, Q.-C. Zhong, and W.-L. Ming, Stabilization of Cascaded DC/DC Converters via Adaptive Series-Virtual-Impedance Control of the Load Converter, IEEE Transactions on Power Electronics, vol. 31, no. x, pp. xxxx-xxxx, 2016.
  11. Q.-C. Zhong and W.-L. Ming, A theta-Converter that Reduces Common Mode Currents, Output Voltage Ripples and Total Capacitance Required, IEEE Trans. on Power Electronics, vol. 31, 2016
  12. B. Ren, Y. Wang, and Q.-C. Zhong, UDE-based Control of Variable-speed Wind Turbine Systems, International Journal of Control, vol. 89, 2016.
  13. X. Zhang, Q.-C. Zhong and W.-L. Ming, Stabilization of a Cascaded DC Converter System via Adding a Virtual Adaptive Parallel Impedance to the Input of the Load Converter, IEEE Trans. on Power Electronics, vol. 31, no. 3, pp. 1826-1832, 2016.
  14. W.-L. Ming and Q.-C. Zhong, A Single-phase Four-Switch Rectifier with Significantly Reduced Capacitance, IEEE Trans. on Power Electronics, vol. 31, no. 2, pp. 1618-1632, 2016.
  15. X. Zhang, X.-B. Ruan and Q.-C. Zhong, Improving the Stability of Cascaded DC/DC Converter Systems via Shaping the Input Impedance of the Load Converter with a Parallel or Series Virtual Impedance, IEEE Trans. on Ind. Electronics,  vol. 62, no. 12, pp. 7499-7512, 2015.
  16. B. Ren, Q.-C. Zhong and J. Chen, Robust Control of Non-affine Nonlinear Systems with an Uncertainty and Disturbance Estimator (UDE), IEEE Trans. on Industrial Electronics, vol.62, no.9, pp. 5881-5888, 2015.
  17. G.C. Konstantopoulos, Q.-C. Zhong, B. Ren and M. Krstic, Stability and fail-safe operation of Inverters Operated in Parallel, International Journal of Control, vol. 88, no. 7, pp. 1410-1421, 2015.
  18. A. Kuperman and Q.-C. Zhong, UDE-based linear robust control for a class of nonlinear systems with application to wing rock motion stabilization, Nonlinear Dynamics, 2015.
  19. W.-L. Ming and Q.-C. Zhong, A single-phase rectifier having two independent voltage outputs with reduced fundamental frequency voltage ripples, IEEE Trans. on Power Electronics, vol. 30, no. 7, pp. 3662-3673, 2015.
  20. X. Cao, Q.-C. Zhong and W.-L. Ming, Ripple eliminator to smooth DC-Bus voltage and reduce the total capacitance required, IEEE Trans. on Industrial Electronics, vol.62, no. 4, pp. 2224-2235, 2015.
  21. A.T. Alexandridis, G.C. Konstantopoulos, and Q.-C. Zhong, Advanced Integrated Modeling and Analysis for Adjustable Speed Drives of Induction Motors Operating with Minimum Losses, IEEE Trans. on Energy Conversion, vol.30, no.3, pp. 1237-1246, 2015.
  22. G.C. Konstantopoulos, Q.-C. Zhong, B. Ren, and M. Krstic, Bounded Droop Controller for Parallel Operation of Inverters, Automatica, Vol. 53, no. 3, pp. 320-328, 2015.
  23. Q.-C. Zhong, Z. Ma, W.-L. Ming and G.C. Konstantopoulos, Grid-friendly wind power systems based on the synchronverter technology, Energy Conversion and Management, vol. 89, pp. 719-726, 2015.
  24. Q.-C. Zhong and Y. Zeng, Control of Inverters via a Virtual Capacitor to Achieve Capacitive Output Impedance, IEEE Trans. on Power Electronics, vol. 29, no. 10, pp. 5568-5578, 2014.
  25. Q.-C. Zhong, P.-L. Nguyen, Z. Ma and W. Sheng, Self-synchronised Synchronverters: Inverters without a Dedicated Synchronisation Unit, IEEE Trans. on Power Electronics, vol. 29, no. 2, pp. 617–630, Feb., 2014.
  26. Q.-C. Zhong, AC Ward Leonard drive systems: Revisiting the four-quadrant operation of AC machines, European Journal of Control, vol. 19, No. 5, 426–436, 2013.
  27. S.M. Disney, R.D. H. Warburton and Q.-C. Zhong, Net Present Value Analysis of the Economic Production Quantity, IMA Jounal of Management Mathematics, vol. 24, No.4, 423–435, 2013.
  28. T. Hornik and Q.-C. Zhong, Parallel PI voltage–H-infinity current controller for the neutral point of a three-phase inverter, IEEE Trans. on Industrial Electronics, vol.60, no.4,1335-1343, 2013.
  29. Q.-C. Zhong and T. Hornik, Cascaded current-voltage control to improve the power quality for a grid-connected inverter with a local load, IEEE Trans. on Industrial Electronics, vol.60, no.4, 1344-1355, 2013.
  30. Q.-C. Zhong, Robust droop controller for accurate proportional load sharing among inverters operated in parallel, IEEE Trans. on Industrial Electronics, vol.60, no.4, 1281-1290, 2013.
  31. Q.-C. Zhong, Harmonic droop controller to reduce the voltage harmonics of inverters, IEEE Trans. on Industrial Electronics,vol.60, no.3, 936-945, 2013.
  32. X.-L. Wang, Q.-C. Zhong, Z.-Q. Deng and S.-Z. Yue, Current-controlled multi-phase slice permanent magnetic bearingless motors with open-circuited phases: Fault-Tolerant Controllability and its Verification, IEEE Trans. on Industrial Electronics, vol. 59, no. 5, 2059-2072, 2012.
  33. Q.-C. Zhong, A. Kuperman and R.K. Stobart, Design of UDE-based controllers from their two-degree-of-freedom nature, Int. Journal of Robust and Nonlinear Control, vol.21, 1994–2008, 2011.
  34. T. Hornik and Q.-C. Zhong, A current control strategy for voltage-source inverters in microgrids based on H-infinity and repetitive control, IEEE Trans. on Power Electronics, vol. 26, no. 3, 943-952, 2011.
  35. Q.-C. Zhong and G. Weiss, Synchronverters: Inverters that mimic synchronous generators, IEEE Trans. on Industrial Electronics, vol.58, no.4, 1259-1267, 2011.
  36. R.K. Stobart, A. Kuperman and Q.-C. Zhong, Uncertainty and disturbance estimator (UDE)-based control for uncertain LTI-SISO systems with state delays, ASME J. Dyn. Syst., Meas., Control, vol. 133, 024502,1-6, 2011.
  37. A. Kuperman and Q.-C. Zhong, Robust control of uncertain nonlinear systems with state delays based on an uncertainty and disturbance estimator, Int. Journal of Robust and Nonlinear Control, vol.21, no.1, 79-92, 2011.
  38. T. Hornik and Q.-C. Zhong, H-infinity repetitive voltage control of grid-connected inverters with a frequency adaptive mechanism, IET Power Electronics, vol.3, no.6, 925-935, 2010.
  39. S. Shen, J. Zhang, X. Chen, Q.-C. Zhong and R. Thornton, ISG hybrid powertrain: A rule-based driver model incorporating look-ahead information,Vehicle System Dynamics, vol. 48, no.3, 301-337, 2010.
  40. S. Hadd and Q.-C. Zhong, On feedback stabilizability of linear systems with state and input delays in Banach spacesIEEE Trans. on Automatic Control, vol. 54, no.3, 438-451, 2009.
  41. Q.-C. Zhong, A. K. Nandi and M. F. Aburdene, Efficient implementation of the discrete Pascal transform using difference operators, IET Electronics Letters, vol. 43, no. 24,1348-1350, 2007.
  42. J. Sun, Q.-G. Wang and Q.-C. Zhong, A less conservative stability test for second-order linear time-varying vector differential equations, Int. Journal of Control, vol. 80, no. 4, 523–526, April 2007.
  43. Q.-C. Zhong, J. Liang, G. Weiss, C.-M. Feng and T. Green, H-infinity control of the neutral point in 4-wire 3-phase DC-AC converters, IEEE Trans. Industrial Electronics, vol. 53, no.5, 1594-1602, 2006.
  44. B. Wang, D. Rees and Q.-C. Zhong, Control of Integral Processes with Dead Time. Part IV: Various Issues about PI controllers, IEE Proc. Control Theory & Appl., vol. 153, no. 3, 302-306, 2006.
  45. R. Majumder, B. Chauduri, B. Pal and Q.-C. Zhong, A unified Smith predictor approach for power system damping control using remote signals, IEEE Trans. on Control Systems Technology, vol. 13, no.6, 1063-1068, 2005.
  46. Q.-C. Zhong, L. Hobson, M.G. Jayne. Classical control of the neutral point in 4-wire 3-phase DC-AC converters, Electrical Power Quality and Utilisation, vol. 11, no.2, 111-119, 2005.
  47. Q.-C. Zhong, J-spectral factorization of regular para-Hermitian transfer matricesAutomatica, vol.41, no.7, 1289-1293,2005.
  48. Q.-C. Zhong, On distributed delay in linear control laws. Part II: Rational implementations inspired from the d-operator . IEEE Trans. on Automatic Control, vol. 50, no.5, 729-734, 2005.
  49. Q.-C. Zhong and D. Rees, Control of uncertain LTI systems based on an uncertainty and disturbance estimator, ASME J. Dyn. Syst., Meas., Control, vol.126, no.4, 905-910, 2004.
  50. Q.-C. Zhong and G. Weiss, A unified Smith predictor based on the spectral decomposition of the plant, Int. J. of Control,vol. 77, no.15, pp.1362-1371, 2004.
  51. Q.-C. Zhong. On distributed delay in linear control laws. Part I: Discrete-delay implementations, IEEE Trans. Automatic Control, vol. 49, no.11, pp.2074-2080, 2004.
  52. Q.-C. Zhong and C.-C. Hang, Control of processes with dead time and input constraints using control signal shaping, IEE Proc. Control Theory & Applications, vol. 151, no.4, pp.473-480, 2004.
  53. G. Weiss, Q.-C. Zhong, T. Green and J. Liang, H-infinity repetitive control of DC-AC converters in micro-grids, IEEE Trans. on Power Electronics, vol. 19, pp.219-230, 2004.
  54. L. Mirkin and Q.-C. Zhong, 2DOF Controller parametrization for systems with a single I/O delay, IEEE Trans. Automatic Control, vol.48, no.11, pp. 1999-2004, 2003.
  55. Q.-C. Zhong, Robust stability analysis of simple systems controlled over communication networks, Automatica, vol.39, no.7, pp. 1309-1312, 2003.
  56. Q.-C. Zhong, On standard H-infinity control of processes with a single delay, IEEE Trans. Automatic Control, vol.48, no.6, pp.1097-1103, 2003.
  57. Q.-C. Zhong, Frequency domain solution to the delay-type Nehari problem, Automatica, vol. 39, no. 3, pp. 499-508, 2003.
  58. Q.-C. Zhong, H-infinity control of dead-time systems based on a transformation, Automatica, vol. 39, no. 2, pp. 361-366, 2003.
  59. Q.-C. Zhong, Control of integral processes with dead time. Part 3: Dead-beat disturbance response, IEEE Trans. Automatic Control, vol. 48, no. 1, pp. 153-159, 2003.
  60. G. Meinsma, L. Mirkin and Q.-C. Zhong, Control of systems with I/O delay via reduction to a one-block problem, IEEE Trans. Automatic Control, vol. 47, no.11, pp.1890-1895, 2002.
  61. Q.-C. Zhong and L. Mirkin, Control of integral processes with dead time. Part 2: Quantitative analysis, IEE Proc. Control Theory & Applications, vol. 149, no. 4, pp. 291-296, 2002.
  62. Q.-C. Zhong, J.E. Normey-Rico, Control of integral processes with dead time. Part 1: Disturbance-observer based 2DOF control scheme, IEE Proc. Control Theory Applications, vol. 149, no. 4, pp. 285-290, 2002.
  63. Q.-C. Zhong and H.-X. Li, Two-degree-of-freedom PID-type controller with Smith principle for processes with dead-time, Industrial & Engineering Chemistry Research, vol. 41, no.10, pp.2448-2454, 2002.
  64. Q.-C. Zhong, J.Y. Xie and Q. Jia, Time-delay-filter-based dead-beat control of process with dead time, Industrial & Engineering Chemistry Research, vol.39, no.6, pp. 2024-2028, 2000.
  65. Q.-C. Zhong and J.Y. Xie, Robust Smith predictive controller for processes with inverse response, Journal of Shanghai Jiaotong University, vol. E-4, no.2, pp. 10-16, 1999.

Patents

  1. Q.-C. Zhong and T. Hornik, Cascaded Current-Voltage Repetitive Controllers to Improve the Quality of Output Voltage and Current Simultaneously for Grid-Connected Inverters, UK Patent GB2483910, filed in September 2010, granted on 19/02/2013.
  2. Q.-C. Zhong, Proportional load sharing for inverters, UK Patent GB2483879, filed in September 2010, granted on 11/06/2013.
  3. Q.-C. Zhong, AC Ward Leonard Drive Systems, UK Patent GB2473853, filed in September 2009, granted on 20/03/2012.
  4. Q.-C. Zhong, A system and a method for converting the kinetic energy stored in landing aircraft into electricity, UK Patent GB2460132, filed in Dec. 2008, granted on 29/01/2013.
  5. Q.-C. Zhong and G. Weiss, Inverters that Mimic Synchronous Generators, UK Patent filed, Application No.: GB0820699.7, Nov.2008.