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terminal condition中文是什么意思

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  • Fourth , the iterative guidance ' s feasibility of different terminal conditions is analyzed
    4 、分析在不同终端条件下,运载火箭迭代制导方法的可行性。
  • The current cfd soft wares were introduced . secondly , there were the correlative knowledge about the time averaged reynolds equation , the criterion k ? model , the simple method , the technology of unstructured mesh , the terminal condition and the modeling method
    详细分析与本文研究相关的雷诺时均方程、标准k -模型、 simple计算方法、非结构网格技术、边界条件以及所用到的几何建模方法。
  • A dynamic model and then an optimal control model established , which regards the minimum length of well trajectory as the index of characteristic and meets the terminal conditions . and the necessary condition of optimal solutions for the optimal control system then discussed
    建立了非直井迹的动力系统模型,讨论了该模型的性质,以此为基础,建立了以满足终端约束与最短并迹长度为性能指标的最优控制模型,讨论了该模型最优解存在的必要条件
  • Based on the theory of cooperation between foundation and structure , paper uses ansys finite element software forming three - dimensional finite element model of . paper also anglicized element type choose , material attribute choose , loading determination , terminal condition determination , anyslys type determination and solution choose , etc . correcting buildings with the method of drawing out soil was analyzed through ninth aspects listed below
    本文借鉴结构设计中的基础与上部结构共同作用理念,运用ansys有限元分析软件,在探讨了单元类别的选择、材料属性选择、载荷、边界条件和分析类别的确定、求解器、求解方法与收敛准则的选择等与有限元建模相关内容的基础上,建立了上部结构和土体共同作用的三维有限元模型。
  • Third , on the basis hypothesis of mean gravitation , optimal control functional of the launch vehicle equations of state are set up by optimal control theory . the optimal control results of launch vehicle are worked out . this control method of automatic start is inferred , which can satisfy the terminal condition of satellite trajectories
    3 、通过引入“平均引力”的简化假设,利用最优控制理论,建立运载火箭的最优控制泛函,得出运载火箭的最优控制问题的解,推导出了可自动起步,满足卫星轨道终端条件的迭代制导方程。
  • The basic idea for hierarchy - based method is that creating and maintaining a tree of clusters and sub - clusters according to some kind of criterion to measure the distance of clusters , the procedure will be sloped until some terminal conditions are satisfied . hierarchical clustering method can be further classified into agglomerative and divisive hierarchical clustering , depending on whether the hierarchical decomposition is formed in a bottom - up or top - down fashion . most hierarchical clustering methods can produce the better results when the clusters are compact or spherical in shape . but they do not perform well if the clusters are any shape or there are outliers . a main reason is that the most hierarchical clustering methods employ medoid - based measurement as distance between clusters
    基于层次方法的聚类的基本思想足:根据给定的簇间距离度量准则,构造利维护一棵由簇利子簇形成的聚类树,直至满足某个终结条件为止。根据层次分解是自底向上还是自顶向下形成,层次聚类方法可以分为凝聚的( agglomerative )和分裂的( divisive ) 。人多数层次聚类算法在紧密簇或球形簇结构下能够产生较好的聚类效果。
  • A full mathematical model of optimal flow pattern design withengineering constraints was put forward , based on modern optimal control theory . an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine . according to integral optimization of turbine stages , a full physical model and mathematical expression were put forward for proposition of optimal flow pattern , including all performance parameters in turbine stages . this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state , fixed terminal condition and constraints for part of state terminal variables . the program was also worked out according penalty function method and conjugate gradient method . the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function
    把近代最优控制论方法引入轴流透平叶片的设计,在优化的轴流透平子午通道内,建立包括透平级内所有性能参量的最优流型命题的完整的物理模型及其数学表达式,并归化为一个在给定初始状态、自变量终端固定、部分状态变量终端受有约束的条件下,使级的某一性能指标(如级的功率)达到最优的最优控制问题,应用“代价函数法”及“共轭梯度法”编制计算程序,计算得到符合给定约束条件、并使目标函数取极值的最优环量分布,结果是令人满意的。
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Last modified time:Tue, 19 Aug 2025 00:29:56 GMT

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