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Simple binary tree class

这个是霍夫曼编码的问题，要求输入只含有ABCD的四句话，且每句8个字符的长度，然后求出四个字符每个的概率，然后当成权值计算霍夫曼编码，我的这个程序已经实现了输入、概率统计、计算出霍夫曼编码存在了bian[]这个数组中(hoffuman decoding)

基于matlab的无刷直流电机仿真速度PI，电流PI双闭环仿真(Matlab-based simulation of brushless DC motor, using speed PI, current PI double closed loop control.)

用户可以进行查询，也可以进行取款存款，还可以转账(Users can query, can also make deposits, withdrawals can also be transferred)

：滤波 fs=400 采样频率,必须大于两倍基带信号最高频率 ts=1/fs 采样时间间隔 T=5 时间窗大小 t=0:ts:T (hf1=zeros(1,N) hf1(f<=B1&f>=-B1)=1 y1=hf1.*fftshift(y) figure subplot(211) plot(f,abs(fftshift(y))/N,f,hf1, r-- ) axis([-fs/2,fs/2,0,1.2]) title( 原信号频谱 ) xlabel( f /Hz ) subplot(212) plot(f,abs(y1)/N) title( 低通滤波，截止频率90Hz ) xlabel( f /Hz ))

说明：  帮同学弄得一个小程序，交作业用的，各位老大指点(To help students confused)

SIMRTP,a RTP demo application from Taiwan.(SIMRTP, a RTP demo application from Taiwan.)

matlab语言解高等数学中的各种问题，并附有各个例题的程序。(matlab language of higher mathematics in the solution of various problems, with various examples of the procedures.)

说明：  包括二分法，Newton下山法和improved Newton迭代法(Including the dichotomy, Newton downhill method and improved Newton iteration method)

Matlab遗传算法工具箱函数及实例讲解。(Matlab genetic algorithm toolbox functions and examples to explain.)