phasedifference

本书以有限单元基本理论为重点，以MATLAB程序为平台，以工程实例为背景，介绍 了有限元法及其程序设计方法。 本书讲述结构分析中有限元法的基本原理，单元类型包括平面杆系，空间杆系，平面等 参元，空间等参元，薄板壳单元和厚板壳单元等。内容涉及杆系结构、平面问题、空间问题和板壳问题。以结构线弹性静力分析为主，同时也讲述了结构的振动、稳定和动力响应分析。(This book is the basic theory of finite elements as the key to the MATLAB program as a platform to project examples as the background, the finite element method and its programming. This book describes the structural analysis of the basic principles of the finite element method, cell types including flat bar, space bar, flat isoparametric element, space isoparametric element, sheet shell and thick shell element and so on. Covering the truss structure, flat issues, space issues and shell problems. Structural linear elastic static analysis-based, but also about the structural vibration, stability and dynamic response analysis.)

code for maximum likelyhood in matlab

this file changes a binary number format to decimal format.

说明：  各种调制雷达信号和噪声混合后的正交分解并滤除噪声后的IQ信号(Radar signal and a quadrature modulation noise mixed signal decomposition and filter out noise after IQ)

说明：  多种方法实现路径规划，包括遗传算法（GA）、动态窗口、RRT等(path planning with multiple methods)

K-nearest neighbors 搜索 聚类时经常使用的一种方法 国外网站转载( The following utilities are provided: - Nearest neighbor - K-Nearest neighbors - Radius Search They al supports N-dimensions and work on double, it is possible to choose if return the distances. Here is a time comparison with a vectrized m-code: N=1000000 number of reference points Nq=100 number of query points dim=3 dimension of points k=3 number of neighbor tic [idc,dist]=BruteSearchMex(p ,qp , k ,k) MEX toc tic [idc,dist]=knnsearch(qp,p,k) VECTORIZED M-CODE toc p=rand(N,dim) qp=rand(Nq,dim) Output: Elapsed time is 0.962640 seconds. Elapsed time is 18.813100 seconds. )

MIT CBCL实验室PNAS2007代码(MIT CBCL lab PNAS2007 code)

Lempel Ziv Decoder in Matlab

说明：  简要介绍了三种典型的混沌系统：Logistic映 射，Lorenz系统和Henon映射，利用Matlab软 件，使用编程方法进行了仿真(Thispaperintroducedthreekindsoftypicalchaotic systems: Logistic mapping, Lorenz system and Henon mapping, simulatedthesechaoticsystemswithmatlab byprogramming.)

被控对象为三阶系统，可以根据M的参数设置演示低通滤波效果，控制部分采用PID控制。(Third-order system for the controlled object, you can set the parameters according to M shows low-pass filtering effect, the control part of the PID control.)