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例3：分析占空比为ta的矩形脉冲频谱 T=1 时间窗大小 ta=0.5 占空比 N=256 t=linspace(-T,T,N) ts=2*T/N fs=1/ts (x=zeros(1,N) x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1) y=fft(x,N) figure plot(t,x) title([ 时域信号图 占空比为 ,num2str(ta)]) axis([-T T-0.2 1.2]) xlabel( t /s ) figure subplot(211) f=linspace(-fs/2,fs/2,N) plot(f,abs(fftshift(y))/N) title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ]) xlabel( f /Hz ) )

机器人的PID控制之确定性单臂机械手的PD+前馈控制（先进进PID控制MATLAB仿真第二版），已通过测试。 (PID control of robot uncertainty arm manipulator PD+ before feed-forward control (Advanced PID Control MATLAB simulation), has been tested.)

agilent powersupply contorl

程序设计问题和学习有效题目，可以有效提高初学者学习能力。(it can inprove the ability of the learners)

对候选人得票进行统计，设有3个候选人，最终只能有1人当选为领导。(Statistics on the number of votes a candidate with three candidates, we can only have one person elected as leader.)

集总元件的多网格FDTD模型及其在混合电路中的应用(Multi-Grid FDTD model and its application in the mixed lumped circuit elements)

TSP问题（货郎担问题，旅行商问题）的模拟退火算法通用malab源程序 f目标最优值,T最优路线,d距离矩阵,t0初始温度,tf结束温度

boos pi controller close loop

本程序是运用SVM来实现人脸识别算法，能直接运行且能进行二次开发(This procedure is to use SVM to implement face recognition algorithm that can run directly and can perform a secondary development)

用c程序和matlab分别试验一种k-means改进算法，按照方法选取聚类中心点，事实证明，这种改进是有效的。(Matlab with c procedures and were experimenting with an improved k-means algorithm, in accordance with the method of selecting cluster center, the facts show that this improvement is effective.)