W Steven Gray
ASSOCIATE PROFESSOR
Electrical & Computer Engineering
Contact Information
Biography
Education/Credentials
Web Link(s)

Research Interests
 Research Interests: Formal power series methods for nonlinear systems analysis; realization theory and modelreduction for nonlinear systems; faulttolerant control for safety critical systems.
 Awarded membership in honor societies Eta Kappa Nu, Electrical Engineering, Pi Mu Epsilon, Mathematics, Pi Eta Sigma, Scholastics, Sigma Xi, Scientific Research, Tau Beta Pi, Engineering
 2006: Best Paper in Session Award On the Markov Property for Nonlinear DiscreteTime Systems with Markovian Inputs’ (with A. Tejada and O. R. Gonzalez), 2006 American Control Conference
 2005: Best Paper in Session Award for ‘Performance Analysis of Recoverable Flight Control Systems Using Hybrid Dynamical Models’ (with H. Zhang and O. R. Gonzalez), 2005 American Control Conference
 2005: Outstanding Research Award, Department of Electrical and Computer Engineering, Old Dominion University
 2003: Best Paper in Session Award for ‘A SelfAdaptive Predictive Congestion Control Model for Extreme Networks’ (with Y. Li and M. Song), 2003 International Conference on Computer Communication and Control Technologies
 2003: Excellence in Research Award, College of Engineering and Technology, Old Dominion University
 2003: Outstanding Teaching Award, Department of Electrical and Computer Engineering, Old Dominion University
 2002: Best Paper in Session Award for ‘Analysis of Design Tradeoffs in Rollback Recovery Methods for Fault Tolerant Digital Control Systems’ (with O. R. Gonz´alez and A. Tejada), American Control Conference
 2002: Best SAE Technical Paper in 2001 for ‘Analytical Tools for the Design and Verification of Safety Critical Control Systems’ (with O. R. Gonz´alez and A. Tejada), SAE Transactions Journal of Aerospace
 1999: Best Paper in Session Award for ‘Digital Linear State Feedback Control Subject to Electromagnetic Disturbances’ (with O. R. Gonzalez and M. Dogan), American Control Conference
 1999: Best Paper in Session Award for ‘On Singular Value Functions and Hankel Operators for Nonlinear Systems’ (with J. M. A. Scherpen), American Control Conference
 1998: Best Paper in Session Award for ‘Modeling Electromagnetic Disturbances in ClosedLoop Computer Controlled Flight Systems’ (with O. R. Gonzalez), American Control Conference
 1998: Best Paper in Session Award for ‘Sufficient Conditions for Minimality of a Nonlinear Realization via Controllability and Observability Functions’ (with J. M. A. Scherpen), American Control Conference
 1997: Visiting Scholar, Delft Institute of Technology, The Netherlands
 1992: NASAASEE Summer Faculty Fellowship, NASA Langley Research Center
 1991: Research Scholar Award, Drexel University
 1989: Outstanding Graduate Teaching Assistant Award, Georgia Tech
 1988: Schlumberger Foundation Fellowship, Georgia Tech
 1986: TRW Augmentation Fellowship, Georgia Tech
 1984: The President’s Fellowship, Georgia Tech
 1983: Nominated for the Henry Ford II Scholarship, Purdue University
 1982: Atlantic Richfield’s Academic Excellence Award, Purdue University
 1981: Alcoa Foundation Scholarship, Purdue University, Purdue University
 1981: Alcoa Foundation Scholarship, Purdue University, Tau Beta Pi, Purdue University
 1981: Purdue Distinguished Student Award, Purdue University

Contracts, Grants and Sponsored Research
 Gray, W. S.; Gonzalez, O. "Design and Analysis of Recoverable Flight Control Systems for Harsh Environments via the SPIDER Architecture" $1,251,841. Federal. 2007  2012
 Gray, W. S.; Gonzalez, O. "Advanced Concepts for Recoverable Controllers in Safety Critical Systems" $402,562. Federal. 2004  2007
 Gray, W. S.; Gonzalez, O. "System Level Effects of Neutron Induced Single Event Upsets on Recoverable Digital Control Systems" $400,000. Federal. 2003  2006
 Gray, W. S.; Gonzalez, O. "Hybrid Modeling and Analysis of Error Recovery in Safety Critical Flight Control Systems" $119,996. Federal. 2002  2005
 Gray, W. S.; Gonzalez, O. "Supplement to ODURF Project #101831" $17,191. Federal. 2002  2003
 Gray, W. S.; Gonzalez, O. "Stochastic Dynamical Models for Digital Control Systems in Electromagnetic Environments " $524,000. Federal. 2000  2003
 Gray, W. S.; Gonzalez, O. "Robust Stability and Performance of a ClosedLoop Computer Control System Subject to Electromagnetic Disturbances" $177,000. Federal. 1999  2000
 Gray, W. S.; Britcher, C. P.; Gonzalez, O. "Supplemental Funds for Characterization, Control and Commissioning of the Magnetic Suspension and Balance System for the Princeton/ONR High Reynolds Number Testing Facility" $40,000. Other. 1999  2000
 Gray, W. S.; Britcher, C. P.; Gonzalez, O. "Characterization, Control and Commissioning of the Magnetic Suspension and Balance System for the Princeton/ONR High Reynolds Number Testing Facility" $100,000. Other. 1998  2000
 Gray, W. S.; Scherpen, J.; Mesko, J. "Balancing and Model Reduction for Nonlinear Dynamical Systems" $6,000. Other. 1997  1999
 Gray, W. S.; Gonzalez, O. "Stability Analysis and Augmentation of a ClosedLoop Computer Control System Subject to Electromagnetic Disturbances" $175,000. Federal. 1997  1998
 Gray, W. S. "Neural Control of Magnetic Suspension Systems for Aerospace Applications" $100,000. Federal. 1993  1994
 Gray, W. S. "Engineering Issues in Designing Feedback Linearizing Controllers" $3,500. Other. 1991  1991