L 1 adaptive state feedback controller for three-dimensional integrated guidance and control of interceptor

Abstract

In this article a $L_{1}$ adaptive state feedback controller is presented for the three-dimensional integrated guidance and control of interceptor. The model of three-dimensional integrated guidance and control is first built by using engagement kinematics and interceptor dynamics. The objective is to control the fin deflection angles to make the line-of-sight rates converge to zero. The $L_{1}$ adaptive control is then applied to design the three-dimensional integrated guidance and control controller. The $L_{1}$ adaptive controller guarantees uniformly asymptotic and bound transient tracking for the system inputs and outputs, which are important for interceptions with strong robustness and high timeliness. The design issues of $L_{1}$ adaptive controller are also discussed. In the interception simulation, the $L_{1}$ adaptive state feedback controller demonstrates the robustness to different kinds of uncertainties, while guaranteeing the transient performance of dynamic interception process.

Keywords

integrated guidance and control interceptor

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