duffingcheckfrequncy

出一种实现不同维间估计结果自动配对的二维频率估计算法。首先把二维频率估计问题转化成两个矩阵束的特征值问题。根据矩阵束的特征求出两个矩阵束的公共特征向量，并以此为基础同时求出两个矩阵束的特征值。算法估计误差与现有算法相近，但解决了现有算法普遍存在的配对难题。 (Matrix pencils play an important role in numerical linear algebra. The problem of finding the eigenvalues of a pencil is called the generalized eigenvalue problem. The most popular algorithm for this task is the QZ algorithm, which is an implicit version of the QR algorithm to solve the associated eigenvalue problem B − 1Ax = λx without forming explicitly the matrix B − 1A (which could be impossible or ill-conditioned if B is singular or near-singular) )

mechanism work in a PWM DC motor

圆周卷积 的matlab实现法。对matlab新手适用。(Circular convolution in matlab implementation method. On the matlab novice apply.)

本课程是航空航天类院校本科飞行器设计与工程专业教学计划中的一门技术基础课。为飞行器设计与工程专业学生的必修课。本课程的目的和任务是使学生掌握流体力学基本知识和空气动力学的基本概念、基本理论，以及解决空气动力学问题的基本方法和分析手段。本课程的内容可分为两大部分：低速空气动力学和可压缩空气动力学，包括了空气动力学的基本概念、低速流动和可压缩无粘流动的基本原理、绕翼型和机翼的不可压缩流动的薄翼理论和有限翼理论、激波理论、翼型亚音速和超音速线化理论及应用等。(This course is a class of undergraduate aerospace vehicle design and engineering teaching program in a technical basic course.)

system identification(IGLS2)

对于海星的检测 步骤 运用理论的论文,文中包含了 不同的分类器(seastar detection)

说明：  潮流计算(matlab)

这是在MATLAB下编写的基于彩色条纹的相位测量轮廓术的源码,很实用.,在光学三维测量中(This is prepared in MATLAB based on the color stripe phase measuring profilometry of the source, it is practical., In the three-dimensional optical measurement)

计算一个圆柱体漂浮在自由水面上所受到的流体作用力(Caculating Hydrodynamics of a cylinder floating on the free surface using Limited Element Method )

ECG Diagnose in development Stage