yantu

biologic algorithem matlab

matlab图形应用篇,三角函数曲线,图形的叠加双y轴图形的绘制,单个轴窗口显示多个图形等32个程序(matlab graphics applications articles, trigonometric curves, the superposition of two-y-axis graph drawing, a single axis of the window display multiple graphics programs such as 32)

计数型抽样检验分析程序 按超几何分布计算(Counting of sampling inspection procedures by calculating the hypergeometric distribution)

共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。(The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure.)

基于MATLAB的异步电机svpwm仿真，有详细的3/2变换和park变换。(Asynchronous motor SVPWM simulation based on MATLAB has detailed 3/2 transform and park transformation.)

说明：  计算行星齿轮的固有频率，来分析其共振现象，刚度矩阵(Calculate the natural frequency of planetary gear to analyze its resonance phenomenon and stiffness matrix)

需重点研究的关键问题med的快速分解hht的(emd)

直线运动的目标跟踪，用matlab语言实现，并且实现了GUI功能。(Linear motion of the target tracking with matlab language, and to achieve the GUI functionality.)

nearestSPD works on any matrix, and it is reasonably fast. As a test, randn generates a matrix that is not symmetric nor is it at all positive definite in general.

A Guide to MATLAB Object-Oriented Programming