Control Systems, Power electronics, Battery modeling

Nonlinear systems theory, control systems with saturation, optimal control and optimization techniques, robust control, control applications to mechanical systems and biomedical systems,?control applications to power and energy systems, 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

Biography

Fluid mechanics, dynamics of multiphase and fluidized-bed reactors, hydrodynamic stability of non-linear multiphase flow systems and pharmaceutical engineering.

Selected Awards and Honors

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

Selected 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

Selected 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)