Enhancement of Integrated Fuzzy-Based Guidance Law by Tabu Search

In this work, a systematic and simple procedure is proposed to develop an integrated fuzzy-based guidance law which consists of three fuzzy logic controllers. Each one of them is activated in a region of the interception. To allow smooth transition between these controllers, additional fuzzy-based switching system is introduced. The parameters of all the fuzzy controllers which include the distribution of the membership functions and the rules are initially obtained from the engineering experience by observing the function of each controller. Furthermore, these parameters are optimally tuned by tabu search technique through solving an optimization problem to minimize the interception time, the missile acceleration commands, and the miss distance. The simulation results show that the proposed technique is able to generate a guidance law that has better performance compared with the proportional navigation guidance law and the fuzzy guidance laws developed by engineering experience.