pca_analysis

说明：  To improve the boiler drum level control system of a power plant, the three challenging issues encountered include (1) effect of ‘‘false water level’’, (2) controller parameter mismatches due to variant working conditions and (3) signal noise caused by uncertainties of drum level. In this paper, based on analyses of the drum level signal, an adaptive derivative action is presented to monitor steam flow, and thus, the effect of ‘‘false water level’’ is weakened. The uncertainties of parameter mismatches and noise are predicted by developing a Grey predictor based algorithm (GPBA). In order to resolve the three problems and further control performance, an adaptive technique is combined with the GPBA to develop an adaptive Grey predictor based method. Finally, concrete simulations give that the proposed method has obvious superiority over conventional methods.

蒙特卡罗算法随机试验计算圆的面积的全过程(Monte Carlo algorithm for the whole process of the randomized trials calculated circle area)

prgramm that calculates the greatest common factor of two numbers

正弦电压PWM逆变器的仿真，使用了自己搭建的PWM产生模块，带阻感负载。(Sinusoidal voltage PWM inverter simulation, using its own built PWM generation module, with a sense of the load resistance.)

poisson equation solve

现代雷达原理，雷达行业很不错的一本资料书(Principles of modern radar, radar industry a very good book information)

matlab 实现k均值 k-means算法 过程清晰 适合初学者(matlab to achieve k-means k-means algorithm suitable for beginners a clear process)

OFDM wonderful simulation

现代信号处理中的分数阶傅里叶变换（FRFT）的MATLAB代码，对分析信号比较有用(Fractional Fourier Transform（FRFT）code in matlab for study modern signal processing.)

decode the DTMF signals