| 新型制导律在变质心再入飞行器中的应用 |
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| 引用本文： | 高长生,李瑞康,荆武兴.新型制导律在变质心再入飞行器中的应用[J].哈尔滨工业大学学报,2009,41(3):6-10. |
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| 作者姓名： | 高长生 李瑞康 荆武兴 |
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| 作者单位： | 高长生,GAO Chang-sheng(哈尔滨工业大学,航天学院,哈尔滨,150001;中国航天科工集团,北京,100854);李瑞康,荆武兴,LI Rui-kang,JING Wu-xing(哈尔滨工业大学,航天学院,哈尔滨,150001)
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| 摘 要： | 研究了变质心再入飞行器动力学模型以及精确制导两方面的问题.基于分析力学中的虚位移原理,设计了一种再入飞行器新型最优制导律。采用解析法预测弹道落点,通过对最优虚位移的搜索,求解出总升力的最佳方向.推导了变质心动力学模型,以质量块为制导控制系统的执行机构,实现变质心再入飞行器的机动飞行.研究发现:质心变化引起的附加力矩是气动稳定力矩系数的函数;该制导律对过载并无要求。仿真结果表明:平均计算3次解析弹道即可完成一次制导指令,经制导控制后最终落点误差在10 m以内.
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| 关 键 词： | 再入飞行器 制导律 再入弹道 最优化 质量矩 变结构控制 |
Application of a new guidance law in moving-mass reentry vehicle |
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| GAO Chang-sheng,LI Rui-kang,JING Wu-xing.Application of a new guidance law in moving-mass reentry vehicle[J].Journal of Harbin Institute of Technology,2009,41(3):6-10. |
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| Authors: | GAO Chang-sheng LI Rui-kang JING Wu-xing |
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| Affiliation: | GAO Chang-sheng1,2,LI Rui-kang1,JING Wu-xing1(1.School of Astronautics,Harbin Institute of Technology,Harbin 150001,China,2.China Aerospace Science and Industry corporation,Beijing 100584,China) |
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| Abstract: | The dynamics model and guidance problems for moving-mass reentry vehicle are studied in this paper.A new optimal guidance law is presented based on the virtual displacement principles.The optimal direction of the lateral force is searched by optimizing the solution of the virtual displacement and predicting the fall point with analytical method.The dynamics model for the vehicle is derived.The actuating mechanism adopting mass block as the guidance control system realizes the maneuver flight of moving-mass ... |
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| Keywords: | reentry vehicle guidance law reentry trajectory optimization moving-mass variable structure control |
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