H{sub}∞ Optimal Controller of Aircraft Roll Dynamics with Time Delay

摘要

Time-delay of flight, control systems has great influence on stability and manuverbility of flying vehicles, and it is of practical importance to design a control law with consideration of the estimated time-delay. In this paper, H{sub}∞ optimalcontroller considering time-delay is solved explicitly for roll angle control using aileron control surface. 揈xplicit means that the time-delay is treated as it is without using approximation in frequency domain. A robust stabilization problem formultiplicative uncertainties is chosen as a formulation and an explicit H{sub}∞ optimal controller for this problem is solved analytically. Stability and performance of the controller are examined for parameter variations.