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Time-to-go estimation for terminal sliding mode based impact angle constrained guidance

机译：基于终端滑模的冲击角约束制导时间估计

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摘要

The time-to-go estimation problem is an important issue in various guidance laws' designing and implementing. In this paper, a time-to-go estimation method is proposed for missiles guided by terminal sliding mode control (TSMC) based impact angle constrained guidance (IACG). To facilitate estimating the time-to-go, a reaching law approach in the sliding mode control (SMC) is applied to design the TSMC based IACG. In this way the interception process can be clearly divided into two phases: outside of the sliding mode surface and inside of the sliding mode surface. The character of the reaching law approach is utilized to estimate the time-to-go in the first phase. And in the second phase, a geometric method is designed to estimate the rest of time-to-go. In addition, another geometric method is applied to approximately calculate an important parameter of the proposed time-to-go estimation method. This parameter measures the curve flexibility of the flight trajectory. Then, based on the conception of predicted-intercept-point (PIP), the proposed time-to-go estimation method can be extended to the scene of intercepting the constant velocity targets. In the end, numerical simulation results are presented to illustrate the effectiveness of the proposed time-to-go estimation method. (C) 2017 Elsevier Masson SAS. All rights reserved.
机译：在各种指导法的设计和实施中，走时估计问题是一个重要问题。本文提出了一种基于终端滑模控制（TSMC）的基于冲击角约束制导（IACG）的导弹走时估计方法。为了便于估计运行时间，采用滑模控制（SMC）中的到达律方法来设计基于TSMC的IACG。这样，拦截过程可以清楚地分为两个阶段：滑模表面的外部和滑模表面的内部。到达律方法的特征用于估计第一阶段的运行时间。在第二阶段中，设计了一种几何方法来估计剩余的运行时间。另外，另一种几何方法被应用于近似地计算所提出的走时估计方法的重要参数。该参数测量飞行轨迹的曲线柔韧性。然后，基于预测截距点（PIP）的概念，可以将提出的走时估计方法扩展到拦截等速目标的场景。最后，数值仿真结果表明了所提时间估计方法的有效性。 （C）2017 Elsevier Masson SAS。版权所有。

著录项

  • 来源
    《Aerospace science and technology》 |2017年第12期|685-694|共10页
  • 作者

    Hou Zhiwei; Liu Lei; Wang Yongji;

  • 作者单位

    Huazhong Univ Sci & Technol, Sch Automat, Natl Key Lab Sci & Technol Multispectral Informat, Wuhan, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Automat, Natl Key Lab Sci & Technol Multispectral Informat, Wuhan, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Automat, Natl Key Lab Sci & Technol Multispectral Informat, Wuhan, Hubei, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Time-to-go estimation; Terminal sliding mode control; Impact angle constrained guidance;

    机译：走时估计;终端滑模控制;冲击角度约束制导;

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