| 连续推力最优轨道规避 |
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| 引用本文： | 岳新成,耿志勇.连续推力最优轨道规避[J].科技导报(北京),2009,27(19):19-23. |
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| 作者姓名： | 岳新成 耿志勇 |
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| 作者单位： | 北京大学工学院力学与空天技术系湍流与复杂系统国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(10832006,60874001);;《科技导报》博士生创新研究资助计划项目(kjdb20090101-5) |
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| 摘 要： | 应用非线性规划方法研究了连续推力时间最优和燃料最优航天器规避问题。航天器空间飞行中,为了避免与其他航天器或空间碎片相撞,需采取措施实施规避策略。由于航天器最优规避问题是典型的具路径约束的轨迹优化问题,间接法即应用极大值原理难于处理。考虑航天器推进系统为固定比冲发动机,用改进的轨道根数描述航天器动态,在给定最大推力幅值和中间过渡轨道时,将规避问题划分为转移和返回两个阶段,然后应用非线性规划方法统一考虑时间最优和燃料最优航天器最优规避问题。数值仿真结果表明,最优规避任务能够完成;在时间最优或燃料最优规避情形时,航天器均以最大推力工作,且时间最优规避时消耗燃料最少。
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| 关 键 词： | 连续推力 时间最优 燃料最优 规避 非线性规划 |
Continuous-thrust Optimal Orbital Avoidance |
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| YUE Xincheng,GENG Zhiyong State Key Laboratory of Turbulence , Complex Systems.Continuous-thrust Optimal Orbital Avoidance[J].Science & Technology Review,2009,27(19):19-23. |
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| Authors: | YUE Xincheng GENG Zhiyong State Key Laboratory of Turbulence Complex Systems |
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| Institution: | YUE Xincheng,GENG Zhiyong State Key Laboratory of Turbulence , Complex Systems,Department of Mechanics , Aerospace Engineering,College of Engineering,Peking University,Beijing 100871,China |
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| Abstract: | The nonlinear programming method is used to study the continuous-thrust minimum-time and the minimum-fuel-consumption orbital avoidance in this paper. During the spacecraft mission lifetime,a encounter with other space objects is possible and to avoid collision,some maneuver strategy is required. The optimal orbital avoidance is a typical trajectory optimization problem with path constraints,but is difficult to be solved by indirect methods. The dynamics of the spacecraft is described by the modified elemen... |
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| Keywords: | continuous thrust optimal time minimum fuel-consumption avoidance nonlinear programming |
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