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首页> 外文期刊>Aerospace science and technology >Three-dimensional terminal angle constraint finite-time dual-layer guidance law with autopilot dynamics
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Three-dimensional terminal angle constraint finite-time dual-layer guidance law with autopilot dynamics

机译：三维终端角约束有限时间双层指导法与自动驾驶仪动态

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Considering the problem of intercepting a target at desired terminal angles in the three-dimensional (3D) space, this paper proposes a finite-time dual-layer guidance law with consideration of the second-order autopilot dynamics. The proposed guidance law owns a cascaded structure, which is divided into an outer system and an inner system. To achieve the finite-time convergence, the outer and inner controllers are developed based on the nonsingular terminal sliding mode control. With the aid of the command filter, which can compute the first and the second derivatives of the virtual signal simultaneously, the design procedure of the fourth-order guidance system is simplified into two steps. Moreover, extended state observers are used to estimate the unknown target maneuver and the acceleration derivative of the missile, which facilitates the real implementation. Simulation results verify the performance of the proposed guidance law. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：考虑到在三维（3D）空间中的所需终端角处拦截目标的问题，本文提出了有限时间的双层指导法，考虑到二阶自动驾驶仪动态。 拟议的指导法拥有级联结构，分为外部系统和内部系统。 为了实现有限时间的收敛，基于非垂直端子滑动模式控制开发外部控制器。 借助于同时计算虚拟信号的第一和第二导数的命令过滤器，第四阶指导系统的设计过程被简化为两个步骤。 此外，扩展状态观察者用于估计导弹的未知目标操纵和加速导数，这促进了实际实现。 仿真结果验证了拟议的指导法的表现。 （c）2021 Elsevier Masson SAS。 版权所有。

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