Faculty Vitae: Aerospace engineering
Selected Patents and Invention Disclosures
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- Selected Presentations and Keynote Addresses: 2001-2005
- Professional Service and Development Activities: 2001-2005
- Institutional Service and Development Activities: 2001-2005
- Selected Honors and Awards
- Georgia Tech Experience
- Selected Patents and Invention Disclosures
Selected Patents and Invention Disclosures“Control of Magnetic Bearing-Supported Rotors,” R. Bartlett, P. Tsiotras and P. Allaire, U.S. Patent No. 6,267,876 B1, Issued Date: July 31, 2001. Selected Publications: 2001-2005Zhang, J., Knospe, C. and Tsiotras, P., Stability of Time Delay Systems: Equivalence Between Lyapunov and Scaled Small-Gain Conditions, IEEE Transactions on Automatic Control, Vol. 46, No. 3, pp. 482-486, 2001. Yoon, H. and Tsiotras, P. Spacecraft Adaptive Attitude Control And Power Tracking With Single-Gimballed Variable Speed Control Moment Gyroscopes, AIAA Journal of Guidance, Control, and Dynamics, Vol. 25, No. 6, pp. 1081-1090, 2002. Shen, H. and Tsiotras, P., Optimal Two-Impulse Rendezvous Between Two Circular Orbits Using Multiple-Revolution Lambert's Solutions, AIAA Journal of Guidance, Control, and Dynamics, Vol. 26, No. 1, pp. 50-61, 2003. Zhang, J., Knospe C., and Tsiotras, P., New Results for the Analysis of Linear Systems with Time-Invariant Delays, International Journal on Robust and Nonlinear Control, Vol. 13, No. 12, pp. 1149-1175, 2003. Tsiotras, P. and Wilson, B.C., Zero- and Low-Bias Control Designs for Active Magnetic Bearings, IEEE Transactions on Control Systems Technology, Vol. 11, No. 6, pp. 889-904, 2003. Yoon, H. and Tsiotras, P., Singularity Analysis of Variable Speed Control Moment Gyros, AIAA Journal of Guidance, Control, and Dynamics, Vol. 27, No. 3, pp. 374-386, 2004. Lanzon, A. and Tsiotras, P., A Hybrid Combination of Hinf Loop-Shaping And mu-Synthesis For Control Of High Speed Flywheels, IEEE Transactions of Control Systems Technology, Vol. 13, No. 5, pp. 766-777, 2005. Shen H. and Tsiotras, P., Peer-to-Peer Refueling for Circular Satellite Constellations, AIAA Journal of Guidance, Control, and Dynamics, Vol. 28, No. 6, pp. 1220-1230, 2005. Selected Presentations and Keynote Addresses: 2001-2005“Robust Control of Energy Momentum Wheels Supported on Active Magnetic Bearings using Hinf Loop-Shaping and mu-Synthesis,” 15th IFAC World Congress, Barcelona, Spain, July 2002. “Dynamic Friction Models for Longitudinal Road/Tire Interaction: Theoretical Advances,” 21st IASTED Conference on Modeling, Identification and Control, Innsbruck, Austria, February 2002. “Analysis and Control of Underactuated Spacecraft,” Centre de Mathematiques Appliquees, Ecole des Mines de Paris, Sophia Antipolis, France, May 2003, (invited). “Approximations to Optimal Feedback Control Using a Successive Wavelet-Collocation Algorithm,” American Control Conference, Denver, Colorado, June 2003. “Spacecraft Adaptive Attitude And Power Tracking With VSCMGs,” Surrey Space Center, University of Surrey, Guildford, United Kingdom, April 2003, (invited). “An Exact Stability Analysis Test for One-Parameter Polynomially-Dependent Linear Systems,” 43rd IEEE Conference on Decision and Control, Paradise Island, Bahamas, December 2004. “Asynchronous Optimal Mixed P2P Satellite Refueling Strategies,” Malcom D. Shuster Astronautics Symposium, Buffalo, New York, June 2005, (invited). “State-Feedback Controller Synthesis for Parameter Dependent LTI Systems,” American Control Conference, Portland, Oregon, June 2005. Professional Service and Development Activities: 2001-2005American Institute of Aeronautics and Astronautics, Associate Fellow, 1989-present Institute of Electrical and Electronic Engineers, Member, 1990-present. Society of Professional Engineers of Greece, Member, 1987-present. 13th IEEE Med. Conf. on Control and Automation, Int. Program Committee Member, 2004-2005 AIAA Journal of Guidance Control and Dynamic, Associate Editor, 1999-present. IEEE Control Systems Magazine, Associate Editor, 2003-present. Dynamics and Control: An International Journal, Associate Editor, 2000-2002. Institutional Service and Development Activities: 2001-2005AE Periodic Peer Review Committee, Chairman, 2005-present AE Dutton/Ducoffe Endowed Chair Faculty Search Committee, Chairman, 2004-2005. AE Five-Year Strategic Plan Committee, Member, 2005-present, AE FMC Ph.D. Qualifying Examination Committee, Member, 1998-present. AE Undergraduate Education Enhancement Committee, Member, 2000-present. AE Laboratory Facilities Committee, Member, 2000-present. AE Student Honors Program Committee, Member, 2001-present. AE Andrew and David Lewis Endowed Chair Faculty Search Committee, Member, 2000-2002. Selected Honors and AwardsTau Beta Pi, 1991. Phi Kappa Phi, 1993. Sigma Gamma Tau, 1994. NSF CAREER Award, 1996. Sigma Xi, President and Visitors' Award for Excellence in Research, 1996. Tibetts Award for Outstanding Research, NASA Goddard Space Flight Center, 1999. Associate Fellow, American Institute of Aeronautics and Astronautics, 2002.
Assistant Professor of Aerospace Engineering DegreesBSE, Aerospace Engineering, University of Michigan, 1999. MSE, Aerospace Engineering, University of Michigan, 2000. Ph.D., Aerospace Engineering, University of Michigan, 2005.
Other Professional Positions and Consulting ExperienceNASA Summer Faculty Research Fellow, Cleveland, Ohio, 2005 Graduate Research Assistant, University of Michigan, Ann Arbor, Michigan, 2001-2005. Selected Patents and Invention Disclosures“High-Current Cathode for MPD Thrusters,” Walker, M. L. R.,, Invention Disclosure (GTRC ID 3461), July, 2005. Selected Publications: 2002-2005Rovey, J. L., Walker, M. L. R., Peterson, P. Y., Gallimore, A. D., “A Magnetically-Filtered Faraday Probe for Measuring the Ion Current Density Profile of a Hall Thruster,” Review of Scientific Instruments, November 15, 2005. – In Press Walker, M. L. R., Hofer, R. R., Gallimore, A. D., "Effects of Faraday Probe Design and Backpressure on Ion Collection in Hall Thruster Plumes," Journal of Propulsion and Power, March 20, 2005. - In Press Walker, M. L. R., Victor, A. L., Hofer, R. R., Gallimore, A. D., "Effect of Backpressure on Ion Current Density Measurements in Hall Thruster Plumes," Journal of Propulsion and Power, Volume 21, Number 3, May-June, 2005. Walker, M. L. R., Gallimore, A. D., "Neutral Density Map of Hall Thruster Plume Expansion in a Vacuum Chamber," Review of Scientific Instruments, Volume 76, Number 5, May 2005. Walker, M. L. R., Gallimore, A. D., Cai, C., Body, I. D., "Vacuum Chamber Pressure Maps of a Hall Thruster Cold Flow Expansion," Journal of Propulsion and Power, Volume 20, Number 6, Nov.–Dec. 2004.
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