| 引用本文: | 王超伦,宋保华,常超.考虑弹体动态特性的非奇异有限时间制导律.[J].国防科技大学学报,2018,40(2):22-27.[点击复制] |
| WANG Chaolun,SONG Baohua,CHANG Chao.Nonsingular finite-time guidance law with missile dynamic[J].Journal of National University of Defense Technology,2018,40(2):22-27[点击复制] |
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| 考虑弹体动态特性的非奇异有限时间制导律 |
| 王超伦, 宋保华, 常超 |
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(北京电子工程总体研究所， 北京 100854)
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| 摘要: |
| 为满足导弹拦截机动目标时交会角约束和有限时间收敛的需求，建立了考虑弹体一阶动态特性的制导模型。把目标加速度视为有界外界干扰，同时结合非线性反步设计法中的动态面法，设计一种考虑弹体动态延迟的非奇异滑模制导律，并且证明了基于Lyapunov稳定性理论制导系统状态可渐进收敛到零。在所设计的制导律下，对单侧机动的低空高速目标进行仿真。仿真结果表明所设计的非奇异制导律可以有效降低弹体动态延迟带来的影响，而且具有较低的脱靶量与交会角误差；与考虑弹体动态特性和交会角约束的最优导引律相比，其具有更高的制导精度。 |
| 关键词: 防空导弹 制导律 动态特性 交会角约束 滑模控制 有限时间 |
| DOI：10.11887/j.cn.201802004 |
| 投稿日期：2017-03-14 |
| 基金项目:国家自然科学基金资助项目（11202023） |
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| Nonsingular finite-time guidance law with missile dynamic |
| WANG Chaolun, SONG Baohua, CHANG Chao |
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(Beijing Institute of Electronic System Engineering, Beijing 100854, China)
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| Abstract: |
| In order to realize intercept angle constraint and finite-time convergence when a missile intercepts a maneuvering target, a guidance model was proposed on the basis of the first-order missile dynamics. By regarding the target acceleration as unknown bounded external disturbance, and by applying the dynamic surface of nonlinear backstepping theory, a nonsingular sliding mode guidance law with missile dynamic was designed. Based on the Lyapunov stability theory, it was proved that the states of guidance system asymptotically converged to zero. Simulations on intercepting targets with constant maneuvering of low attitude and high velocity were made. Simulation results indicate that the designed guidance law can effectively reduce the influence caused by the missile dynamic delay, and the miss distance and the intercept angle error are small; by comparison with the optimal guidance law with missile dynamic and intercept angle constraint, the designed guidance law has higher guidance accuracy. |
| Keywords: air-defense missile guidance law dynamic characteristics intercept angle constraint sliding mode finite time |
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