gongcheng

针对频率周期振荡的振动系统讨论自适应控制问题,在频率跟踪的基础上对频率变化的振动响应进行控 制,给出相应的估计、滤波与控制方法。首先在子空间辨识原理的基础上,通过测量信号自相关序列的递推运算获得信号 频率 然后根据估计频率实时调整带通滤波器的中心频率,使其跟踪信号频率,实现信号分量的跟踪滤波 最后在LMS方 法的基础上构造对信号分量进行控制的自适应控制器。(The adaptive vibration control of systems excited by forces of periodically varying frequencieswas dis- cussed. The presented adaptive controlwas realized on the basis of tracking of time-varying frequencies and amethod for online frequency estimation, filtering and controlwas proposed. Based on the principle of subspace identification, the time-varying frequencieswere estimated from the recursively computed autocorrelation ofmeasured signals. )

最小二乘法拟合，基于matlab的算法，拟合研究的一部分(LSF Least Square Fit )

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说明：  好用的matlab程序，专门针对冲激串的傅立叶变换设计的(welldone，good things to learn matlab)

本程序设计了一个最佳升余弦滚降系统，包括输入输出信号的波形、功率谱、眼图和系统误码率曲线(This procedure is designed or one of the best cosine roll-off system, including input and output signal waveform, power spectrum, eye diagram and BER curves)

活塞式压缩机级间管道压力脉动matlab小程序(a matlab program to calculate the pressure pulsation of piston compressor interstage pipe)

tracker.m Continuously keeps taking snap in real time and sending to function isub for tracking isub.m It is a function which takes two consequent frames, subtracts them(background gets subtracted), converts the resulting image into binary, finds the centroid of largest area of connected pixels and marks it(tracks it) The code has been tested in MATLAB 7.6

说明：  文章介绍了在OFDM系统中基于导频的信道估计方法(Article introduced the System in OFDM based on pilot channel estimation methods)

DFIM Field Oriented Control

基于直角坐标的牛顿拉弗逊法潮流计算程序，经过IEEE14模型测试。(the newton_lafason power flow )