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numerical_analysis_homework
(有源代码)数值分析作业,本文主要包括两个部分,第一部分是常微分方程(ODE)的三个实验题,第二部分是有关的拓展讨论,包括高阶常微分的求解和边值问题的求解(BVP).文中的算法和算例都是基于Matlab计算的.ODE问题从刚性(STIFFNESS)来看分为非刚性的问题和刚性的问题,刚性问题(如大系数的VDP方程)用通常的方法如ODE45来求解,效率会很低,用ODE15S等,则效率会高多了.而通常的非刚性问题,用ODE45来求解会有很好的效果.从阶次来看可以分为高阶微分方程和一阶常微分方程,高阶的微分方程一般可以化为状态空间(STATE SPACE)的低阶微分方程来求解.从微分方程的性态看来,主要是微分方程式一阶导系数大的时候,步长应该选得响应的小些.或者如果问题的性态不是太好估计的话,用较小的步长是比较好的,此外的话Adams多步法在小步长的时候效率比R-K(RUNGE-KUTTA)方法要好些,而精度也高些,但是稳定区间要小些.从初值和边值来看,也是显著的不同的.此外对于非线性常微分方程还有打靶法,胞映射方法等.而对于微分方程稳定性的研究,则诸如相平面图等也是不可缺少的工具.值得提出的是,除了用ode系类函数外,用simulink等等模块图来求解微分方程也是一种非常不错的方法,甚至是更有优势的方法(在应用的角度来说).((Source code) numerical analysis homework, this docment includes two parts, the first is ordinary differential equations (ODE) of the three examples, the second part is about the expansion of the discussion, including the higher-order ordinary differential & boundary value solution Problems (BVP). the text of the algorithm and numerical examples are based on the Matlab. ODE from the rigid (STIFFNESS) look into the issue of non-rigid and rigid problem, rigid problems (such as large coefficient VDP equation) such as using the always method ODE45 used to solve the problems , efficiency will be low, with ODE15S the other hand, many of the high efficiency. and the usual problem of non-rigid, there will be used to solve ODE45 very good results. Judging from the order can be for high-order differential equations and first-order ordinary differential equations, higher-order differential equations can be transformed into a general state space (STATE SPACE) used to solve the low-order different)
- 2009-03-16 09:06:09下载
- 积分：1
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Ghent2000[1]
fuzzy control of dc drive
- 2009-05-23 20:23:21下载
- 积分：1
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多目标跟踪matlab
说明： 多目标跟踪软件流程如下：
初始化函数
初始化轨迹对象
读取一帧数据
前景检测
根据位置进行卡尔曼预测
匈牙利匹配算法进行匹配
分配好的轨迹更新
未分配的轨迹更新
删除丢掉的轨迹
创建新轨迹
结果展示(The flow of multi-target tracking software is as follows:
Initialization function
Initialize track object
Read a frame of data
Foreground detection
Kalman prediction based on location
Hungarian matching algorithm for matching
Assigned track update
Unassigned track update
Delete lost tracks
Create a new track
Result display)
- 2021-02-09 10:29:53下载
- 积分：1
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Shape-Recognation
通过边界集中识别图像形状特性，并返回数值(Images by identifying the boundary shape characteristics of centralized and return values)
- 2011-05-22 17:28:01下载
- 积分：1
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GAsvm
载入测试数据wine,其中包含的数据为classnumber = 3,wine:178*13的矩阵,wine_labes:178*1的列向量(Now the test data wine, wherein the data contained in the classnumber = 3 wine: 178* 13, the matrix wine_labes: 178* 1 of the column vector)
- 2013-05-14 20:34:10下载
- 积分：1
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MATLAB-VIBIRATION
matlab求解非线性动力学和机械振动的书籍和例题，参考价值很大，很多问题都可以参考(matlab solving nonlinear dynamics and mechanical vibration of books and examples, reference of great value, many problems can be a reference)
- 2021-04-07 09:59:02下载
- 积分：1
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并行算法
说明： 数学建模学习资料 并行算法，用以数学建模学习(Parallel algorithm for learning data of mathematical modeling)
- 2020-11-22 18:19:34下载
- 积分：1
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MenteCarlo
Matlab 上做的平面四方格子的Ising 模型(An Ising model of plane in Matlab2010b)
- 2012-10-14 10:36:33下载
- 积分：1
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pudn_g39pa1
使用MATLAB程序编写的MP4视频转换程序，支持iBEwcP格式和viLAedU格式的转换，解码时音视频数据的获取就是建立在此之上的,学习MP4的最佳程序
(Using MATLAB programming MP4 video conversion program that supportsiBEwcP format and formatviLAedU conversion, access is built on top of this, the best learning program MP4 audio and video data decoding
)
- 2015-12-27 15:56:58下载
- 积分：1
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EMTP-ATP-books
EMTP-ATP软件包使用说明书.rar电力系统暂态稳态分析(EMTP- ATP package instruction manual. Rar power system transient state analysis )
- 2021-03-25 09:49:13下载
- 积分：1
