| 利用整流罩抛离信息的火箭二级飞行参数辨识 |
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| 引用本文： | 章胜,程文科,王华,唐国金.利用整流罩抛离信息的火箭二级飞行参数辨识[J].导弹与航天运载技术,2010(4). |
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| 作者姓名： | 章胜 程文科 王华 唐国金 |
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| 作者单位： | 国防科技大学航天与材料工程学院,长沙,410073;国防科技大学航天与材料工程学院,长沙,410073;国防科技大学航天与材料工程学院,长沙,410073;国防科技大学航天与材料工程学院,长沙,410073 |
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| 摘 要： | 运载火箭二级飞行段主机推力、游机推力、综合比冲、质量流量、火箭二级飞行初始质量参数间存在交联关系,不能同时进行辨识.采用四步骤辨识方法,以整流罩抛离激励时刻为分界点分别使用输出误差法,利用抛罩产生的火箭质量突变信息求解出推进剂质量流量,进而得到其它参数.仿真结果验证了方法的有效性.
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| 关 键 词： | 运载火箭 参数辨识 极大似然法 |
Identification of Second Stage Flight Parameters by Information of Fairing Discarding for Launch Vehicle |
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| Zhang Sheng,Cheng Wenke,Wang Hua,Tang Guojing.Identification of Second Stage Flight Parameters by Information of Fairing Discarding for Launch Vehicle[J].Missiles and Space Vehicles,2010(4). |
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| Authors: | Zhang Sheng Cheng Wenke Wang Hua Tang Guojing |
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| Affiliation: | Zhang Sheng,Cheng Wenke,Wang Hua,Tang Guojing(College of Aerospace , Material Engineering,National University of Defense Technology,Changsha,410073) |
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| Abstract: | The parameters of second stage of a launch vehicle,including main-engine thrust,vernier engine thrust,integral specific impulse,flow rate and the initial mass,are related in the flight dynamics,which can not be identified simultaneously.According to a four-step approach,maximum likelihood method is applied respectively based on before and after data of payload fairing discarding,the generated mass discontinuity due to fairing discarding is utilized to identify flow rate,other parameters could be got accordi... |
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| Keywords: | Launch vehicle Parameter identification Maximum likelihood method |
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