Design of a Sliding Mode Controller with Optimal Parameters for Three-Dimensional Guidance Law Using Harmony Search Algorithm
In this paper, a navigation guidance law is designed based on a sliding mode control and harmony search algorithm to track a maneuvering target in three-dimensional space. Despite the high efficiency of classical guidance laws in target tracking without any maneuvering, in the presence of uncertainty, disturbance, the nonlinearity of dynamic systems and target maneuvering, robust navigation guidance is required. Hence, a sliding mode control method is used for designing three-dimensional robust navigation guidance laws. Besides, parameters of sliding mode control are determined by minimizing multi-objective fitness function, which is the summation of the relative distance between missile-target and yaw angle of the line of sight. To show the effectiveness of the optimal sliding mode method, the simulation results are compared with some other techniques such as Proportional Navigation Guidance (PNG) and Augmented Proportional Navigation Guidance (APNG). It is proved that both the performance and efficiency of the proposed regulated-sliding-mode-based guidance scheme have significantly improved in comparison with these methods.
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