curvature

说明：  提出了一种改进高阶Butterworth低通滤波器性能的设计方法。首先对高阶Butterworth低通滤波器的极点 进行重新分布，得出改进型Butterworth低通滤波器。性可以由其在基波电压初相位为零时的特性所唯一确定(Periodic voltage and current waveforms on the start time of its corresponding harmonic component of the relationship between the initial phase of research, pointed out that the characteristics of harmonic sources can be its initial phase in the fundamental zero-voltage characteristics of the CD a definite)

说明：  对信号进行EMD分解后画出信号的希尔伯特包络谱程序，自己编写的，调试成功(EMD decomposition of the signal after the draw of the Hilbert envelope of the signal spectrum of procedures, I have written, debugging success)

克里金插值的matlab代码及其说明文档：强人学习克里金插值方法的matlab代码，其中含有使用文档，原理说明，以及代码注释！(The kriging interpolation matlab code and its description document: strongman learning kriging interpolation method matlab code, which contains the use of the document, Rationale, and code comments!)

QAM matlab code system

One of the most advanced routines in picture editing. Remove undesirable parts from pictures.

说明：  《MATLAB语言与自动控制系统设计》第二版，机械工业出版社，魏克新等编著。介绍了各种经典控制器的matlab设计方法。(MATLAB Language and Control System Design，Second Edition, China Machine Press, WeiKexin, eds. Introduced a variety of classical controller design methods in matlab environment.)

说明：  关于8PSK译码的matlab小程序，简单易懂，很是好用的，有好东西相互交流(8PSK decoding matlab on a small program, easy to understand, it is easy to use, there are good things to exchange )

介绍了MATLAB软件的SIMULIK的使用方法，阐述了MATLAB软件在火电厂自动控制系统调整中的应用(on MATLAB software SIMULIK of use, MATLAB software described in the thermal power plant control system adjustment of)

ARMA模型在matlab中的实现，This function provides an ARMA spectral estimate which is maximum entropy satisfying correlation constraint (number of poles)and cepstrum constrains (number of ceros) (The realization of the ARMA model in matlab，This function provides an ARMA spectral estimate which is maximum entropy satisfying correlation constraint (number of poles)and cepstrum constrains (number of ceros) )

剔除粗大误差，使用格拉布斯准则，自动剔除误差(Eliminate the careless error using Grubbs criteria automatically remove errors)