控制系统仿真(MATLAB)实验1-6

控制系统仿真(MATLAB)实验指导书青岛大学自动化工程学院2006年4月一、实验目的：BefamiliarwithMATLABEnvironmentBefamiliarwitharrayandmatrixBefamiliarwithMATLABoperationsandsimpleplotfunction二、实验内容：BefamiliarwithMatlab6.5StartupMatlab6.5,browsethemajortoolsoftheMatlabdesktopTheCommandWindowsTheCommandHistoryWindowsLaunchPadTheEdit/DebugWindowFigureWindowsWorkspaceBrowserandArrayEditerHelpBrowserCurrentDirectoryBrowserGivetheanswerofthefollowingquestionsforthearray1.10.02.1-3.5array}-0.01.1-6.6 2.80.3-0.4—1.40.01.16.01.10.02.1-3.5array}-0.01.1-6.6 2.80.3-0.4—1.40.01.16.03.41.30.0_Whatisthesizeofarray1?Whatisthevalueofarray1(4,1)?Whatisthesizeandvalueofarray1(:,1:2)?Whatisthesizeandvalueofarray1([13],end)?Givetheanswerofthefollowingcommadl)a=l:2:5; 2)b=0a9a5];3)c=b(l:2:3,1:2:3);4)d=a+b(2,:)5)w=[zeros(l,3)ones(3,l)93:51Givetheanswerofthesub-arrays-6.62.83.40.3-0.41.3-6.62.83.40.3-0.41.30.01.10.00.01.1array}=2.10.1-1.45.11)array1(3,:);2)array1(:,3)；3)array1(1:2:3,[334])4)arrayl([l1],:)Givetheanswerofthefollowingoperations2 -21ri-iirii,b= ,c-,d=eye(2)-12jL02J2_4)a*c

8)a.A4)a*c

8)a.Aba.*c 6)a\b 7)a.\bSolvethefollowingsystemofsimultaneousequationsforx—2.0X1+5.0x2+1.0尤3+3・014+4.0/-1.0x6—0.02.Ox,-1.0x2-5.0x3-2.0x4+6.0x5+4.0x6=1.0—1.0X1+6.0^2—4.0%3—5.0%4+3.0/一1・04=—6.0—4.0%]+3・0%2-6.0兄3—5.0%4—2.0%5—2.0%6=10.0—3.0%+6.0x?+4.0元3+2.0%4—6.0天+4・04=—6.02.0%+4.0%2+4.0工3+4.0工4+5.0/一4.0x6=~2.0Edit&Runthem-file%teststepresponsefunctionwn=6;kosi=[0.1:0.1:1.02];figure(l);holdonforkos=kosinum=wnA2;den=[l,2*kos*wn,wn.A2];step(num,den)endholdoff;Edit&Runthem-file%testplotfunctionx=0:pi/20:3*pi;yl=sin(x);y2=2*cos(2*x);plot(x,yl/rv:\x,y2/bo—1);title('PlottheLineofy=sin(2x)anditsderivative');xlabelfXaxis1);ylabel(!Yaxis');legend(*f(x)Vd/dxf(x),);gridon;Edit&Runthem-file%testsubplotandloglogfunctionx=0:0.1:10;y=x.A2-l0.*x+26;subplot(2,2,l);plot(x,y);gridon;subplot(2,2,2);semilogx(x,y);gridon;subplot(2,2,3)；semilogy(x,y);gridon;subplot(2,2,4);loglog(x,y);gridon;Edit&Runthem-file%testmaxandplotfunctionvolts=120;rs=50;rl=l:0.1:100;amps=volts./(rs+rl);pl=(amps.A2).*rl;[maxvol,index]=max(pl);plot(rl,pl,rl(index),pl(index),,rh,);gridon;一、实验目的：LearntodesignbranchandloopstatementsprogramBefamiliarwithrelationalandlogicaloperatorsPractice2Dplotting二、实验内容：PARTI:(选择练习，不需提交实验报告)Holdcommandexercisex=-pi:pi/20:pi;yl=sin(x);y2=cos(x);plot(x,yl,，b，)；holdon;plot(x,y2,'k--');holdoff;legend('sinx',‘cosx')Figurecommandexercisefigure(l);subplot(2,l,l);x-pi:pi/20:pi;y=sin(x);plot(x,y);grsidon;titleC^ubplot1Title1);subplot(2,l,2);x-pi:pi/20:pi;y=cos(x);plot(x,y);gridon;titleC^ubplot2Title1);PolarPlotsexerciseg=0.5;theta=0:pi/20:2*pi;gain=2*g*(1+cos(theta));polar(theta,gain,'r-f);title('\fontsize{20}\bfGainversusangle\theta1);Comparethe3approachesfollows(LoopsandVectorization)%A.PerformcalculationbyForLoopwithpre-initializearraytic;square=zeros(l,l0000)%pre-initializearrayforii=l:10000square(ii)=iiA2;square_root(ii)=iiA(1/2);cube_root(ii)=iiA(l/3);endtoe;tl=toc%B.PerformcalculationbyForLoopwithoutpre-initializearraytic;forii=1:10000square(ii)=iiA2;square_root(ii)=iiA(1/2);cube_root(ii)=iiA(l/3);endtoe;t2=toc%C.Performcalculationwithvectorstic;ii=1:10000square(ii)=ii.A2;square_root(ii)=ii.A(1/2);cube_root(ii)=ii.A(l/3);endtoe;t3=tocPARTII:(需提交实验报告)Assumethata,b,c,anddaredefined,andevaluatethefollowingexpression.a=20;b=-2;c=0;d=l;a>b;(2)b>d;(3)a>b&c>d;(4)a==b;(5)a&b>c;6)〜〜b;a=2;b=[l-2;-010];c=[01;20];d=[-212;010];(7)〜(a〉b)(8)a>c&b>c(9)c<=da=2;b=3;c=10;d=0;a*b八2〉a*c(11)d|b>a(12)(d|b)>aa=20;b=-2;c=0;d=9Tesf;isinf(a/b)(14)isinf(a/c)(15)a>b&ischar(d)(16)isempty(c)WriteaMatlabprogramtosolvethefunctiony(x)=In---,wherexisanumber<1.Useanif\-xstructuretoverifythatthevaluepassedtotheprogramislegal.Ifthevalueofxislegal,caculatey(x).Ifnot,writeasuitableerrormessageandquit.Writeoutm.fileandplotthefigureswithgridsAssumethatthecomplexfunctionf(t)isdefinedbytheequationf(t)=(0.5-0.25i)t-1.0Plottheamplitudeandphaseoffunctionfor0<f<4.WritetheMatlabstatementsrequiredtocalculatey(t)fromtheequation1—3/2+5/NOM="/<oforvalueoftbetween-9and9instepsof0.5.