Ph.D. Mechanical Engineering, Vanderbilt University, Nashville, Tennessee,
Currently Enrolled
M.S. Electrical Engineering, Tennessee State University, Nashville, Tennessee,
1992
B.S. Electrical Engineering, Tennessee State University, Nashville, Tennessee,
1989
Robust Control, Computer Aided Control Systems Design, Computational Methods.
Robust Parametric Control Applications to Space Structures
Recent developments in robust parametric control are being studied for
their application to the problem of position control and vibration control
of the space platform including the LAN-7 satellite, flexible slewing beam,
and large space structures.
This research is funded by NASA Headquarters.
Low Order and Parametrically Less Sensitive Controller Design
It is found that controllers that robustly stabilize a plant against
plant uncertainty are usually high order and extremely sensitive with respect
to controller parameter perturbations. To overcome this problem, the research
aims to develop new control design methodologies that can result in a low
order controller which tolerates some degree of controller perturbations.
Robust Parametric Control Toolbox
Development of a computer aided design package based on the parametric
robust stability and control theory.
REFEREED PUBLICATIONS
S. Ahmad, L.H. Keel and S.P. Bhattacharyya, "Computer Aided Robust
Control Design for Interval Control Systems", Proceedings of the
1992 IEEE Symposium on Computer Aided Control System Design;, Napa,
CA., March 1992.
S. Ahmad, L.H. Keel, and S.P. Bhattacharyya, "Robust PID Control and
Lead-Lag Compensation for Linear Interval Systems", Robustness
of Dynamic Systems with Parameter Uncertainties, pp. 251 - 260, Birhauser
Press, 1992.
S. Ahmad and L.H. Keel, "Robust Lead-Lag Compensation for a
Family of Uncertain Linear Systems", International Symposium on Circuits
and Systems, San Diego, May 1992.
S. Ahmad,"Parallel Computer Implementation of Parametric Robust Control"
ACM Mid-Southeast Chapter, Gatlinburg, TN, November, 1991.