EECS500 Spring 2013 Department Seminar

Sanjay Garg
Implementation Challenges for Multivariable Control What you don’t learn in school
White Bldg., Room 411
11:30am - 12:30pm
February 7, 2013

Multivariable control allows controller designs that can provide decoupled command tracking and robust performance in the presence of modeling uncertainties. Although the last three decades have seen extensive development of multivariable control theory and example applications to complex systems in software/hardware simulations, there are no “production” flying systems – aircraft or spacecraft, that use multivariable control.  This is because of the tremendous challenges associated with implementation of such multivariable control designs.  Unfortunately, the curriculum in schools does not provide sufficient time to be able to provide an exposure to the students in such implementation challenges.  The objective of this presentation is to share the lessons learned by a practitioner of multivariable control in the process of applying some of the modern control theory to the Integrated Flight Propulsion Control (IFPC) design for an Advanced Short Take-Off Vertical Landing (STOVL) aircraft simulation. The presentation focuses on the challenges and barriers of using multivariable control designs in real flight systems, and presents tools and techniques for overcoming some of the barriers with illustrative examples from the STOVL IFPC design study.


Dr. Sanjay Garg received his Ph.D. from Purdue University, M.Sc. from University of Minnesota, and B.Tech from Indian Institute of Technology, Kanpur, India, all in Aerospace Engineering. He has worked as a controls engineer at NASA Glenn Research Center (GRC) since 1988 and is currently Chief of the Controls and Dynamics Branch. He is responsible for the development of advanced dynamic modeling, health management, and control design and implementation technologies for current and future aerospace propulsion systems. Dr. Garg is internationally recognized for research contributions in application of multivariable control technologies to aerospace vehicles, and for leadership in application of Intelligent System technologies to propulsion systems. He has authored over 80 technical papers and has presented graduate seminars at various universities. Dr. Garg is a recipient of the NASA Medal for Exceptional Achievement, NASA Medal for Exceptional Service, and a NASA fellowship for the Program for Management Development at Harvard Business School. He has also completed the NASA Senior Executive Service Candidate Development program.