【摘 要】
：
高超声速再入轨迹优化问题是一类复杂的最优控制问题.采用高斯伪谱法(GPM)将再入轨迹优化问题转化为非线性规划问题(NLP),对NLP进行归一化处理后,采用SNOPI软件包求解.根据协
论文部分内容阅读
高超声速再入轨迹优化问题是一类复杂的最优控制问题.采用高斯伪谱法(GPM)将再入轨迹优化问题转化为非线性规划问题(NLP),对NLP进行归一化处理后,采用SNOPI软件包求解.根据协态变量映射规则计算出协态变量,得出哈密尔顿函数沿最优控制的变化过程.算例中,GPM耗时约7 s即可生成一条严格满足各种约束的三维最优再入轨迹,耗时远少于相关文献,并且优化精度高,满足一阶最优性必要条件.
其他文献
A pot experiment was conducted in a plastic film house to evaluate the translocation and uptake of heavy metals (Pb,Cd,Cu,and Zn) into brown rice (Oryza sativa
Si-Mo-Tang(SMT) oral liquid preparation,a traditional Chinese medicine,was prepared from four crude herbal drugs,Fructus Aurantii Submaturus,Radix Aucklandiae,S
Rhizosphere drives plant uptake of sparingly soluble soil zinc(Zn).An investigation with three experiments was conducted to study organic acid exudation by two
This article proposes a diffused hepatitis B virus (HBV) model with CTLimmune response and nonlinear incidence for the control of viral infections.By means of d
Hyperphenylalaninemia is one of the commonest inborn errors of metabolism affecting approximately 1 in 15 000 live births. Among Chinese, BH4 deficiency leading
Knowledge of plant responses to soil water availability is essential for the development of efficient irrigation strategies.However,notably different results ha
In the present work, different silica-based supported cobalt (Co) catalysts were synthesized and used for CO2 hydrogenation for methanation. Different supports,
The author considers the Cauchy problem for quasilinear inhomogeneous hyperbolic systems.Under the assumption that the system is weakly dissipative,Hanouzet and
在大规模分布式系统中,节点加入与退出所产生的扰动行为对系统性能有直接影响.当前关于节点扰动的行为模型主要描述节点达到和持续时长的统计特性,同时也对节点进行分类并赋
T Toxicities(-lgEC)of 16 halogeno-benzenes against vibrio qinghaiensis(Q67)were measured systematically, and their 2D-QSAR model(R = 0.821)was established,which