| 引用本文: | 曾亮,张洪波,郑伟,等.探月飞船跳跃式再入组合制导方法.[J].国防科技大学学报,2014,36(6):70-75.[点击复制] |
| ZENG Liang,ZHANG Hongbo,ZHENG Wei,et al.An investigation on combined entry guidance for lunar capsule skip reentry[J].Journal of National University of Defense Technology,2014,36(6):70-75[点击复制] |
|
| |
|
|
| 本文已被：浏览 9866次 下载 7167次 |
| 探月飞船跳跃式再入组合制导方法 |
| 曾亮, 张洪波, 郑伟, 罗宗富 |
|
(国防科技大学 航天科学与工程学院， 湖南 长沙 410073)
|
| 摘要: |
| 针对预测-校正制导方法计算量大的问题，提出一种结合预测-校正法和标准轨道法的组合制导方法。在一次再入段采用预测-校正法提高制导方法的鲁棒性能，在二次再入段采用标准轨道法减少计算量。该组合制导方法通过利用标准轨道信息，减少了预测时间；通过设计指令快速迭代算法，减少了迭代次数；并根据飞船二次再入点处的实际状态，修正标准指令剖面，提高二次再入制导性能。仿真结果表明：该组合制导方法能大幅减少预测时间，提高校正速度，并具有较高的鲁棒性和精度。 |
| 关键词: 探月飞船 跳跃式再入 再入制导 组合制导 |
| DOI：10.11887/j.cn.201406013 |
| 投稿日期：2014-04-22 |
| 基金项目:国家自然科学基金资助项目（61203194）；航天飞行动力学技术重点实验室开放基金资助项目（2012afdl018） |
|
| An investigation on combined entry guidance for lunar capsule skip reentry |
| ZENG Liang, ZHANG Hongbo, ZHENG Wei, LUO Zongfu |
|
(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
|
| Abstract: |
| A new entry guidance method combined predictor-corrector guidance and reference trajectory guidance was proposed for reducing calculated amount in predictor corrector entry guidance. Predictor-corrector guidance was applied in initial entry phase to improve robustness, and reference trajectory guidance was applied in second entry phase to reduce calculated amount. Through the information of reference trajectory, it was less time consumed in predicting. The method with a new command fast iterative algorithm was designed to reduce the iterative times. The reference command profile was revised according to actual condition of lunar capsule in transfer position so as to compensate error and to improve the quality of the second entry guidance performance. Numerical simulation results demonstrate that the combined entry guidance method is able to lessen time in predicting and fasten correction, and it has the characteristics of high precision and robustness. |
| Keywords: lunar capsule skip reentry entry guidance combined guidance |
|
|
