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Tingshu Hu

UMass Lowell Electrical and Computer Engineering Professor Tingshu-Hu
Tingshu HuProfessor
  • CollegeFrancis College of Engineering
  • DepartmentElectrical & Computer Eng
  • Phone(978) 934-4374
  • EmailTingshu_Hu@uml.edu

Research Interests

Control Systems; Power Electronics; Energy Systems

Control Theory; Nonlinear systems; Lyapunov theory; optimization; Control design for power converters; battery modeling

Education

  • Ph D: Electrical & Computer Engineering, (2001), University of Virginia - Virginia
  • MS: Electrical Engineering, (1988), Tong University, China - China
  • BS: Electrical Engineering, (1985), Shanghai Jiao Tong University, China - China

Awards and Honors

  • Teaching Excellence Award (2007), Teaching - Department of Electrical and Computer Engineering, University of Massachusetts Lowell

Publications

  • Wang, H., Tahan, M., Hu, T. (2016) "Effects of rest time on equivalent circuit model for a li-ion battery," Proceedings of the American Control Conference 2016-July: pp. 3101 - 3106
  • Hu, T., Zheng, X., Lu, Z., Wang, B., Liu, X., Yang, L., Zhou, J., Ni, C. (2016) "Syntheses, crystal structures, thermal and spectra of two complexes containing bis (maleonitriledithiolate) nickelate (II) anion and di-substituted chlorobenzyl triphenylphosphinium cation," Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry just-accepted pp. 00–00
  • Devarakonda, L., Hu, T. (2015) "Effects of rest time on discharge response and equivalent circuit model for a lead-acid battery," Journal of Power Sources 282: pp. 19-27
  • Devarakonda, L., Hu, T. (2014) "Algebraic method for parameter identification of circuit models for batteries under non-zero initial condition," Journal of Power Sources 268: pp. 928-940
  • Jung, H., Wang, H., Hu, T. (2014) "Control design for robust tracking and smooth transition in power systems with battery/supercapacitor hybrid energy storage devices," Journal of Power Sources 267: pp. 566-575
  • Fassinou, F., Wang, H., Devarakonda, L., Hu, T. (2014) "Observer-based method for reduction of dc-link voltage ripple in two-stage boost inverters," Proceedings of the American Control Conference pp. 4348-4353
  • Devarakonda, L., Wang, H., Hu, T. (2014) "Parameter identification of circuit models for lead-acid batteries under non-zero initial conditions," Proceedings of the American Control Conference pp. 4360-4365
  • Hu, T., Jung, H. (2013) "Simple algorithms for determining parameters of circuit models for charging/discharging batteries," Journal of Power Sources 233: pp. 14-22
  • Jung, H., Conficoni, C., Tilli, A., Hu, T. (2013) "Modeling and control design for power systems driven by battery/supercapacitor hybrid energy storage devices," Proceedings of the American Control Conference pp. 4283-4288
  • Pham, H., Jung, H., Hu, T. (2012) "State-Space Approach to Modeling and Ripple Reduction in AC-DC Converters," Control Systems Technology, IEEE Transactions on PP:99 pp. 1-1
  • Hu, T. (2011) "A Nonlinear-System Approach to Analysis and Design of Power-Electronic Converters With Saturation and Bilinear Terms," Power Electronics, IEEE Transactions on 26:2 pp. 399-410
  • Hu, T., Jung, H. (2011) "Estimation of Magnitude of Self-Induced Oscillations via Piecewise Quadratic Lyapunov Functions," Circuits and Systems I: Regular Papers, IEEE Transactions on 58:12 pp. 2872-2881
  • Hu, T., Zanchi, B., Zhao, J. (2011) "Simple Analytical Method for Determining Parameters of Discharging Batteries," Energy Conversion, IEEE Transactions on 26:3 pp. 787-798
  • Yao, Y., Fassinou, F., Hu, T. (2011) "Stability and robust regulation of battery-driven boost converter with simple feedback," IEEE Transactions on Power Electronics 26:9 pp. 2614-2626
  • Hu, T., Thibodeau, T., Teel, A.R. (2010) "A unified lyapunov approach to analysis of oscillations and stability for systems with piecewise linear elements," IEEE Transactions on Automatic Control 55:12 pp. 2864-2869
  • Hu, T., Blanchini, F. (2010) "Non-conservative matrix inequality conditions for stability/stabilizability of linear differential inclusions," Automatica 46:1 pp. 190-196
  • Massimetti, M., Zaccarian, L., Hu, T., Teel, A.R. (2009) "Linear discrete-time global and regional anti-windup: An LMI approach," International Journal of Control 82:12 pp. 2179-2192
  • Dai, D., Hu, T., Teel, A.R., Zaccarian, L. (2009) "Output feedback design for saturated linear plants using deadzone loops," Automatica 45:12 pp. 2917-2924
  • Dai, D., Hu, T., Teel, A.R., Zaccarian, L. (2009) "Piecewise-quadratic Lyapunov functions for systems with deadzones or saturations," Systems and Control Letters 58:5 pp. 365-371
  • Thibodeau, T., Tong, W., Hu, T. (2009) "Set invariance and performance analysis of linear systems via truncated ellipsoids," Automatica 45:9 pp. 2046-2051
  • Hu, T., Teel, A.R., Zaccarian, L. (2008) "Anti-windup synthesis for linear control systems with input saturation: Achieving regional, nonlinear performance," Automatica 44:2 pp. 512-519
  • Hu, T., Ma, L., Lin, Z. (2008) "Stabilization of Switched Systems via Composite Quadratic Functions," Automatic Control, IEEE Transactions on 53:11 pp. 2571-2585
  • Hu, T., Teel, A.R. (2007) "Characterization of Forced Vibration for Difference Inclusions: A Lyapunov Approach," Circuits and Systems I: Regular Papers, IEEE Transactions on 54:6 pp. 1367-1379
  • Hu, T. (2007) "Nonlinear control design for linear differential inclusions via convex hull of quadratics," Automatica 43:4 pp. 685-692
  • Goebel, R., Teel, A.R., Hu, T., Lin, Z. (2006) "Conjugate convex lyapunov functions for dual linear differential inclusions," IEEE Transactions on Automatic Control 51:4 pp. 661-666
  • Hu, T., Teel, A.R., Zaccarian, L. (2006) "Stability and Performance for Saturated Systems via Quadratic and Nonquadratic Lyapunov Functions," Automatic Control, IEEE Transactions on 51:11 pp. 1770-1786
  • Hu, T., Lin, Z. (2005) "Absolute stability analysis of discrete-time systems with composite quadratic Lyapunov functions," Automatic Control, IEEE Transactions on 50:6 pp. 781-797
  • Hu, T., Goebel, R., Teel, A.R., Lin, Z. (2005) "Conjugate Lyapunov functions for saturated linear systems," Automatica 41:11 pp. 1949-1956
  • Hu, T., Lin, Z., Jiang, W., Allaire, P.E. (2005) "Constrained control design for magnetic bearing systems," Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME 127:4 pp. 601-616
  • Hu, T., Teel, A.R., Lin, Z. (2005) "Lyapunov characterization of forced oscillations," Automatica 41:10 pp. 1723-1735
  • Hu, T., Lin, Z. (2004) "Controlled invariance of ellipsoids: Linear vs. nonlinear feedback," Systems and Control Letters 53:3-4 pp. 203-210
  • Hu, T., Lin, Z. (2004) "Output regulation of linear systems with bounded continuous feedback," IEEE Transactions on Automatic Control 49:11 pp. 1941-1953
  • Hu, T., Lin, Z., Allaire, P.E. (2004) "Reducing power loss in magnetic bearings by optimizing current allocation," IEEE Transactions on Magnetics 40:3 pp. 1625-1635
  • Hu, T., Lin, Z., Shamash, Y. (2003) "On maximizing the convergence rate for linear systems with input saturation," IEEE Transactions on Automatic Control 48:7 pp. 1249-1253
  • Hu, T., Lin, Z. (2003) "On the tightness of a recent set invariance condition under actuator saturation," Systems and Control Letters 49:5 pp. 389-399
  • Hu, T., Lin, Z., Chen, B.M. (2002) "An analysis and design method for linear systems subject to actuator saturation and disturbance," Automatica 38:2 pp. 351-359
  • Hu, T., Lin, Z., Qiu, L. (2002) "An explicit description of null controllable regions of linear systems with saturating actuators," Systems and Control Letters 47:1 pp. 65-78
  • Hu, T., Lin, Z. (2002) "Exact characterization of invariant ellipsoids for single input linear systems subject to actuator saturation," IEEE Transactions on Automatic Control 47:1 pp. 164-169
  • Hu, T., Miller, D.E., Qiu, L. (2002) "Null controllable region of LTI discrete-time systems with input saturation," Automatica 38:11 pp. 2009-2013
  • Hu, T., Lin, Z. (2002) "On improving the performance with bounded continuous feedback laws," IEEE Transactions on Automatic Control 47:9 pp. 1570-1575
  • Hu, T., Lin, Z. (2002) "On semiglobal stabilizability of antistable systems by saturated linear feedback," IEEE Transactions on Automatic Control 47:7 pp. 1193-1198
  • Hu, T., Lin, Z. (2002) "Output regulation of general discrete-time linear systems with saturation nonlinearities," International Journal of Robust and Nonlinear Control 12:13 pp. 1129-1143
  • Cao, Y., Lin, Z., Hu, T. (2002) "Stability analysis of linear time-delay systems subject to input saturation," IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 49:2 pp. 233-240
  • Hu, T., Lin, Z. (2001) "Practical stabilization of exponentially unstable linear systems subject to actuator saturation nonlinearity and disturbance," International Journal of Robust and Nonlinear Control 11:6 pp. 555-588
  • Lin, Z., Hu, T. (2001) "Semi-global stabilization of linear systems subject to output saturation," Systems and Control Letters 43:3 pp. 211-217
  • Hu, T., Lin, Z., Shamash, Y. (2001) "Semi-global stabilization with guaranteed regional performance of linear systems subject to actuator saturation," Systems and Control Letters 43:3 pp. 203-210
  • Hu, T., Lin, Z., Qiu, L. (2001) "Stabilization of exponentially unstable linear systems with saturating actuators," IEEE Transactions on Automatic Control 46:6 pp. 973-979
  • Hu, T., Lam, J. (1999) "Improvement of parametric stability margin under pole assignment," IEEE Transactions on Automatic Control 44:10 pp. 1938-1942
  • Lam, J., Yan, W., Hu, T. (1999) "Pole assignment with eigenvalue and stability robustness," International Journal of Control 72:13 pp. 1165-1174
  • Hu, T., Miller, D.E., Qiu, L. (1998) "Controllable regions of LTI discrete-time systems with input saturation," Proceedings of the IEEE Conference on Decision and Control 1: pp. 371-376
  • Hu, T., Qiu, L. (1998) "On structured perturbation of Hermitian matrices," Linear Algebra and Its Applications 275-176: pp. 287-314
  • Hu, T., Qiu, L., Lin, Z. (1998) "Stabilization of LTI systems with planar anti-stable dynamics using saturated linear feedback," Proceedings of the IEEE Conference on Decision and Control 1: pp. 389-394
  • Hu, T., Chen, L. (1996) "Gradient approach to H-optimization," Zidonghua Xuebao/Acta Automatica Sinica 22:2 pp. 145-153
  • Hu, T., Shi, S. (1995) "Continuity analysis of the robust stability radius and an optimization method," Kong Zhi Li Lun Yu Ying Yong/Control Theory and Applications 12:1 pp. 25-25
  • Hu, T., Shi, S., Zhang, Z. (1994) "New approach to robust design in time domain-on minimizing P] and V]V-1]," Zidonghua Xuebao/Acta Automatica Sinica 20:2 pp. 129-137
  • Hu, T., Shi, S., Zhang, Z. (1991) "Optimizing a class of functionals related to sensitivity and robustness," Zidonghua Xuebao/Acta Automatica Sinica 17:5 pp. 596-596

Contracts, Fellowships, Grants and Sponsored Research

  • Control design of power electronic interfaces for optimal performance of renewable energy systems (2012), - National Science Foundation
    Hu, T. (Principal)
  • ARRA - Analysis of Nonlinear Oscillations via Lyapunov Approach (2009), Grant -
    Hu, T. (Principal)
  • Analysis of Nonlinear Oscillations via Lyapunov Approach (2009), - National Science Foundation
    Hu, T. (Principal)
  • Nonlinear/Switching Control Design for Constrained Control Systems with Application to Magnetic Suspension (2006), - National Science Foundation
    Hu, T. (Principal)
  • Research experience for undergraduates (2007), - National Science Foundation
    Hu, T. (Principal)
  • A Generalized Absolute Stability Approach to Dealing with Saturation Nonlinearities: Analysis, Design and Applications to Magnetic Bearing Systems (2003), - National Science Foundation
    Hu, T. (Co-Principal)
  • A Continuous Flow Centrifugal Ventricular Assist Device (2002), - Utah Artificial Heart Institute
    Hu, T. (Co-Principal)