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论文:2013,Vol:31,Issue(2):233-238 |
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引用本文： |
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朱战霞, 韩沛, 陈鹏. 基于非线性Terminal滑模的动能拦截器末制导律设计[J]. 西北工业大学 |
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Zhu Zhanxia, Han Pei, Chen Peng. Design of Nonlinear Terminal SMGL (Sliding-Mode Guidance Law) for KKV (Kinetic Kill Vehicle)[J]. Northwestern polytechnical university |
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| 基于非线性Terminal滑模的动能拦截器末制导律设计 |
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| 朱战霞, 韩沛, 陈鹏 |
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| 西北工业大学 航天学院, 陕西 西安 710072 |
| 摘要: |
| 滑模制导律由于具有优越的性能而得到广泛关注,其设计的关键是滑模面的选取。传统的滑模变结构制导律通常都选择线性滑动平面,并保证系统到达该平面后跟踪误差渐近地收敛到零,在此过程中对收敛时间没有约束,因此不能满足快速性要求。针对这一问题,可以采用Terminal滑模控制策略,即在滑模面设计中引入非线性函数,使跟踪误差在有限时间内收敛到零。分析了一类非线性Terminal滑模面在应用中存在的问题,针对该问题设计了一种改进形式的非线性Terminal滑模面,并推导了系统从任意初始状态到达平衡状态所需时间的表达式。之后,针对动能拦截器末制导,基于改进方法设计了一种非线性Terminal滑模制导律,仿真结果表明,相对于传统的滑模制导律,所设计的制导律可以满足动能拦截的要求,不仅能够使系统状态在有限时间内收敛,而且脱靶量更小。 |
| 关键词:
动能拦截
滑动模态
Terminal滑模
制导律
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| Design of Nonlinear Terminal SMGL (Sliding-Mode Guidance Law) for KKV (Kinetic Kill Vehicle) |
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| Zhu Zhanxia, Han Pei, Chen Peng |
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| College of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| SMGL has drawn great attention for its superior performance; during the design of SMGL, the key is howto choose a sliding-mode. Traditionally we choose a linear sliding-mode,with which the tracking error of systemwill asymptotically converge to zero. But the shortcoming of linear-mode is that we cannot control the convergencetime and that sometimes this cannot meet the requirement of rapid response. To avoid this problem,we can use ter-minal sliding-mode control law (TSMCL), in which a nonlinear function is introduced in the sliding-mode, and thiscan satisfy that tracking error converges to zero in finite time. In this paper,we analysed the problems of a kind ofnonlinear terminal sliding-mode surface that emerged in its utilization. Then,aiming at the above problem,we putforward a novel improved nonlinear terminal sliding-mode(NTSM) and derived the expression of convergence timethat is needed by the system to arrive at balance state from an initial state. Finally,for KKV,we designed a newnonlinear terminal sliding-mode guidance law using the improved NTSM. Representative simulation results and theiranalysis show preliminarily that the new guidance law not only meets the requirement of kinetic kill assignment,butalso converges quickly; furthermore the miss distance is smaller than that of traditional sliding-mode guidance law. |
| Key words:
design
errors
response time(computer systems)
sliding mode control
tracking(position);guid-ance law
KKV(Kinetic Kill Vehicle)
terminal sliding mode
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| 收稿日期: 2012-04-17
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(10802064)资助 |
| 通讯作者:
Email： |
| 作者简介: 朱战霞(1973-),女,西北工业大学教授、博士生导师,主要从事飞行器动力学与控制研究。
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| 作者相关文章 |
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| 朱战霞 在本刊中的所有文章 |
| 韩沛 在本刊中的所有文章 |
| 陈鹏 在本刊中的所有文章 |
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参考文献: |
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[1] 韩 沛. 大气层外动能拦截器末制导律设计与仿真.[硕士学位论文]. 西安: 西北工业大学, 2012Han Pei. Design and Simulation of Terminal Guidance Law for Exo-Atmospheric Kinetic Vehicle. Master Degree Dissertation.Xi'an: Northwestern Polytechnical University, 2012 (in Chinese)
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[7] 汤一华,陈士橹,徐 敏,万自明. 基于 Terminal 滑模的动能拦截器末制导律研究. 空军工程大学学报,2007,(2):22-25Tang Yihua, Chen Shilu, Xu Min, Wan Ziming. Terminal Guidance Law of Kinetic interceptor Based on Terminal Sliding-Mode.Journal of Air Force Engineering University(Natural Science Edition). 2007,(2):22-25 (in Chinese)
[8] Yu Xinghuo,Man Zhihong. Fast Terminal Sliding-Mode Control Design for Nonlinear Dynamical Systems. IEEE Trans on Cir-cuits and Systems, 2002 |
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