Linear-quadratic-Gaussian with loop-transfer recovery methodology for an unmanned aircraft

The linear-quadratic-Gaussian with loop-transfer-recovery methodology is considered for flight control design. Several advantages of this method, as well as some precautions that practicing designers should consider during application, have been highlighted. A roll attitude control system is designed for an unmanned aircraft using this methodology. It is demonstrated that this methodology is transparent in addressing such issues as uncertainty descriptions, stability robustness, trade-offs between robustness and available actuator power, bandwith limitations, and prefilter design.