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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15MATLAB实验一一、实验目的：1.BefamiliarwithMATLABEnvironment2.Befamiliarwitharrayandmatrix3.BefamiliarwithMATLABoperationsandsimpleplotfunction二、实验内容：1.BefamiliarwithMatlab6.5StartupMatlab6.5,browsethemajortoolsoftheMatlabd
2、esktopnTheCommandWindowsnTheCommandHistoryWindowsnLaunchPadnTheEdit/DebugWindownFigureWindowsnWorkspaceBrowserandArrayEditernHelpBrowsernCurrentDirectoryBrowserPARTI:下列选择练习，不需提交实验报告1．Givetheanswerofthefollowingquestionsforthearray1）Whatisthesizeofarray1?an
3、s=452）Whatisthevalueofarray1(4,1)?ans=1.40003）Whatisthesizeandvalueofarray1(:,1:2)?ans=1.1000001.10002.10000.10001.40005.10004）Whatisthesizeandvalueofarray1([13], end)?ans=6.00001.3000152．Givetheanswerofthefollowingcommad1)a=1:2:5;a=1352)b=[a’a’a’];b=11133
4、35553)c=b(1:2:3,1:2:3);c=11554)d=a+b(2,:)d=4685)w=[zeros(1,3) ones(3,1)’ 3:5’]w=0001113453．Givetheanswerofthesub-arrays1)array1(3,:);ans=2.10000.10000.30000.40001.30002)array1(:,3);ans=2.10006.60000.300003)array1(1:2:3,[334])ans=2.10002.10003.50000.30000.3
5、0000.40004)array1([11],:)ans=1.100002.10003.50006.00001.100002.10003.50006.00004．Givetheanswerofthefollowingoperations151)a+bans=33142)a*dans=22123)a.*dans=20024)a*cans=655)a.*cerror6)abans=1.0000-1.0000-0.50001.50007)a.bans=0.50000.500001.00008)a.^bans=
6、2214PARTI:下列选择练习，不需提交实验报告1．Edit&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)endholdoff;152．Edit&Runthem-file%testplotfunctionx=0:pi/20:3*pi;y1=sin(x);y2=2*cos(2*x);pl
7、ot(x,y1,'rv:',x,y2,'bo--');title('PlottheLineofy=sin(2x)anditsderivative');xlabel('Xaxis');ylabel('Yaxis');legend('f(x)','d/dxf(x)');gridon;3．Edit&Runthem-file%testsubplotandloglogfunctionx=0:0.1:10;y=x.^2-10.*x+26;subplot(2,2,1);plot(x,y);gridon;subplot(2
8、,2,2);semilogx(x,y);gridon;subplot(2,2,3);semilogy(x,y);gridon;subplot(2,2,4);loglog(x,y);gridon;154．Edit&Runthem-file%testmaxandplotfunctionvolts=120;rs=50;rl=1:0.1:100;amps=volts./(rs+rl);pl=(amps.^2).*rl;[
