| 引用本文: | 姜尚,田福庆,孙世岩,等.考虑落角约束与驾驶仪特性的自适应径向基空间末制导律.[J].国防科技大学学报,2019,41(6):100-110.[点击复制] |
| JIANG Shang,TIAN Fuqing,SUN Shiyan,et al.Space terminal guidance law based on adaptive radial basis function with terminal angle constraints and autopilot characteristic[J].Journal of National University of Defense Technology,2019,41(6):100-110[点击复制] |
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| 考虑落角约束与驾驶仪特性的自适应径向基空间末制导律 |
| 姜尚,田福庆,孙世岩,梁伟阁 |
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(海军工程大学 兵器工程学院, 湖北 武汉 430033)
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| 摘要: |
| 为使舰炮制导炮弹在打击近岸机动目标的末制导段满足落角约束,考虑驾驶仪动态特性,基于自适应径向基逼近网络与动态面提出一种空间末制导律。构建弹目相对运动模型,通过带改进微分跟踪器的扩张状态观测器估计目标加速度。为零化视线角跟踪误差与角速率,采用自适应指数趋近律设计非奇异终端滑模,运用自适应径向基逼近网络削弱控制指令抖振。通过Lyapunov第二法证明了系统的视线角跟踪误差与视线角速率均最终一致有界。仿真实验表明:该末制导律使制导炮弹在空间中打击不同机动形式的近岸目标时,具备良好的末制导性能。 |
| 关键词: 末制导 落角约束 自适应径向基 动态面 扩张状态观测器 |
| DOI：10.11887/j.cn.201906016 |
| 投稿日期：2018-08-25 |
| 基金项目:国家自然科学基金资助项目(61640308)；国家部委基金资助项目(3020802010105) |
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| Space terminal guidance law based on adaptive radial basis function with terminal angle constraints and autopilot characteristic |
| JIANG Shang, TIAN Fuqing, SUN Shiyan, LIANG Weige |
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(Institute of Weapons Engineering, Naval University of Engineering, Wuhan 430033, China)
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| Abstract: |
| In order to make the naval gun satisfy the terminal angular constraint while striking near shore maneuver target in terminal guidance section, a space terminal guidance law based on the adaptive RBF(radial basis function) approximation network and dynamic surface was proposed, which takes the dynamic characteristics of autopilot in consideration. The space relative motion model was constructed, and the extended state observer with modified tracking differentiator was used to estimate the acceleration of target. Aiming at zeroing the tracking error about line of sight angle and angular velocity, the nonsingular terminal sliding mode was designed with adopting adaptive exponential reaching law. The adaptive RBF approximation network was applied to weaken control instruction chattering. The tracking error about line of sight angle and angular velocity in system is uniformly bounded, which was proved by Lyapunov second method. Simulation experiment shows this terminal guidance law makes the guided projectile possess well terminal guidance performance while striking targets with different maneuver forms in space. |
| Keywords: terminal guidance terminal angular constraint adaptive RBF dynamic surface extended state observer |
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