An LQG Up-and Away Flight Control Design for the STOL F-15 Aircraft.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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A robust controller for the STOL F-15 aircraft is developed using the LQGLTR linear system model, quadratic cost, gaussian models of uncertainty used for controller synthesis, with loop transfer recovery techniques of tuning the filter in the loop for control robustness enhancement methods. Full state feedback controllers are synthesized using CGTPI Command Generator Tracking feedforward compensator to provide direct incoporation of flying qualities into the design process, with proportional plus integral feedback control synthesis, using implicit model following techniques to improve full state robustness characteristics. Finally, a Kalman filter is used to replace the unrealistic assumption of full state availability with estimated states, using a LTR scheme to recover as much full state robustness characteristics as possible. Thesis Keywords Optimal Control, Model-Following Control, Robustness, Proportional-Integral Control, STOL Aircraft Control, Flight Control Systems.
- Flight Control and Instrumentation