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1、信号处理仿真(MATLAB)实验指导书青岛大学自动化工程学院电子工程系2006年4月21MATLAB实验一一、实验目的：1.BefamiliarwithMATLABEnvironment2.Befamiliarwitharrayandmatrix3.BefamiliarwithMATLABoperationsandsimpleplotfunction二、实验内容：1.BefamiliarwithMatlab6.5StartupMatlab6.5,browsethemajortoolsoftheMatlabde
2、sktopnTheCommandWindowsnTheCommandHistoryWindowsnLaunchPadnTheEdit/DebugWindownFigureWindowsnWorkspaceBrowserandArrayEditernHelpBrowsernCurrentDirectoryBrowserPARTI:下列选择练习，不需提交实验报告1．Givetheanswerofthefollowingquestionsforthearray1）Whatisthesizeofarray1?size
3、(array)452）Whatisthevalueofarray1(4,1)?3）Whatisthesizeandvalueofarray1(:,1:2)?1.1000001.10002.10000.1000-1.40005.10004）Whatisthesizeandvalueofarray1([13], end)?6.00001.30002．Givetheanswerofthefollowingcommad1)a=1:2:5;a=135212)b=[a’a’a’];b=1113335553)c=b(1:2
4、:3,1:2:3);c=11554)d=a+b(2,:)d=4685)w=[zeros(1,3) ones(3,1)’ 3:5’]w=0001113453．Givetheanswerofthesub-arrays1)array1(3,:);2.10000.10000.3000-0.40001.30002)array1(:,3);2.1000-6.60000.300003)array1(1:2:3,[334])2.10002.1000-3.50000.30000.3000-0.40004)array1([11]
5、,:)1.100002.1000-3.50006.00001.100002.1000-3.50006.00004．Givetheanswerofthefollowingoperations1)a+b3-3-142)a*d2-2-123)a.*d20024)a*c6-55)a.*cwrong6)ab211.00001.00000.50001.50007)a.b0.50000.500001.00008)a.^b2.0000-0.50001.00004.0000PARTI:下列选择练习，不需提交实验报告1．Ed
6、it&Runthem-file%teststepresponsefunctionwn=6;kosi=[0.1:0.1:1.02];figure(1);holdonforkos=kosinum=wn^2;den=[1,2*kos*wn,wn.^2];step(num,den);step阶跃响应num分子den分母适量矩阵endholdoff;2．Edit&Runthem-file%testplotfunctionx=0:pi/20:3*pi;y1=sin(x);y2=2*cos(2*x);plot(x,y1,'
7、rv:',x,y2,'bo--');title('PlottheLineofy=sin(2x)anditsderivative');xlabel('Xaxis');ylabel('Yaxis');legend('f(x)','d/dxf(x)');gridon;213．Edit&Runthem-file%testsubplotandloglogfunctionx=0:0.1:10;y=x.^2-10.*x+26;subplot(2,2,1);plot(x,y);gridon;subplot(2,2,2);se
8、milogx(x,y);gridon;subplot(2,2,3);semilogy(x,y);gridon;subplot(2,2,4);loglog(x,y);gridon;214．Edit&Runthem-file%testmaxandplotfunctionvolts=120;rs=50;rl=1:0.1:100;amps=volts./(rs+rl);pl=(amps.^2).*rl;[m
