Fractional order feedback control of nonlinear aerial systems

In this dissertation, a system of Fractional Order Proportional Integral Derivative controller is introduced and implemented to a radar-guided missile in order to track a high-speed flying target. Many novel intelligent tuning techniques are proposed and implemented to this controller and each of these tuning methods is examined by a number of performance metrics such as 2-norm, ∞-norm, radar tracking performance, angle of attack during flight, normal acceleration efficiency and the missile hitting accuracy expressed by the value of miss distance. Some of these tuning methods are tested under the effect of noise and error sources. Also, these tuning methods have been compared with other standard methods from the literature. The simulation results proved the effectiveness of these tuning methods especially the novel neural H2/H∞ optimization technique associated with genetic algorithm achieves an excellent tracking performance with a very low value of miss distance as well as a very smooth and effective control of the missile during the whole flight time, and especially at the vicinity of impact where the behavior of the missile becomes very aggressive.