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我就是找不出问题在哪里,以前好像出过一次这样的情况,后来不记得怎么弄好了 我把源代码粘过来,亟盼各位大侠指点 function [sys,x0,str,ts]=cyjzibian(t,x,u,flag,n,NUM) switch flag case 0 [sys,x0,str,ts] = mdlInitializeSizes(n,NUM); case {1,2,4,9} sys = []; case 3 sys = mdlOutputs(t,x,u,n,NUM); otherwise error(['unhandled flag = ',num2str(flag)]); end function [sys,x0,str,ts] = mdlInitializeSizes(n,NUM) sizes = simsizes; sizes.NumContStates = 0; sizes.NumDiscStates =0; sizes.NumOutputs = 1; sizes.NumInputs = 1; sizes.DirFeedthrough = 0; sizes.NumSampleTimes = 1; sys = simsizes(sizes); str = []; x0 = []; ts = [-1 0]; function sys = mdlOutputs(t,x,u,n,NUM) nH=720;f=50;p=4;n0=60*f/p;n=6;iMB=n0/n;lmdk=2.5;PH=45;omgg0=2*pi*n0/60;SH=(n0-nH)/n0;Sm=SH*(lmdk+sqrt(lmdk^2-1)); MH=9550*PH/nH; Bw=0;l=1.025;m1=1440+1350*NUM;j1=1/3*m1*l*l;j2=2.12;Mc=l*m1*9.81;ycl=0.8702;tal=12/180*pi;H=6.1;G=2.6;I=3.2;K=sqrt((H-G)^2+I^2); R=1.1;C=2.5;A1=4.4;P=3.6;theta0=0/180*pi;af=asin(I/K); faimax=acos((C^2+K^2-(R+P)^2)/(2*C*K));faimin=acos((C^2+K^2-(P-R)^2)/(2*C*K));S=(faimax-faimin)*A1; Er=2.12e+11;Dr=0.0256;Ar=pi*(Dr/2)^2;Lr=900;pr=7850;wr=pr*Ar*Lr*9.8;c=sqrt(Er/pr); w=100e-3;Dc=0.05;Dti=0.076;v=(12*pi*w/(pr*Ar))*(Dr/(Dti-Dr))*((0.20+0.39*Dr/Dti)+2.1970*10e4/25*(Dc/Dti-0.3810)^2.57*((Dc^2-Dr^2)/(Lr*Dr))); deltx=Lr/30;q=2/3;omg0=2*pi*nH/(60*iMB);bj=70;dym=700;ym=950;bjm=bj*bj*pi/4/1000000;ygjm=Dti*Dti*pi/4; lmdt=bjm*dym*ym*9.8*Lr/Er/Ar;lmdg=bjm*dym*ym*9.8*Lr/Er/(ygjm);lmdtg=lmdt+lmdg; x0=0.2;sp=S-lmdtg+x0+lmdg;W0=ym*9.8*(dym*ygjm-Ar*Lr); load -ascii t1.txt; load -ascii thetad.txt; load -ascii thetd1.txt; load -ascii thetd2.txt; for i=1:3 theta(i)=thetad(i); thet1(i)=thetd1(i); thet2(i)=thetd2(i); end deltt=t-t1;r=deltt/deltx; for j=1:1:29 Ek=q*c^2*r^2;Ck=1+2*c^2*r^2*q+deltt*v*0.5; A(j+1,j)=-Ek;A(j+1,j+2)=-Ek;A(j+1,j+1)=Ck; end A(1,1)=1; A(31,29)=1/2*(Er*Ar);A(31,30)=-2*Er*Ar;A(31,31)=3/2*(Er*Ar); u=zeros(31,1000);up=zeros(1,1000);up1=zeros(1,1000);ppj=zeros(1,6000); u(:,1)=0;u(:,2)=0; up(1)=0.0005;up(2)=0.001;up(3)=0.002,up1(1)=0;up1(2)=0;up1(3)=1.1;ppj(1)=0;ppj(2)=50; for i=1:3 theta2(i)=2*pi-theta(i)+af;L(i)=sqrt(R^2+K^2-2*R*K*cos(theta2(i))); belta(i)=asin(R*sin(theta2(i))/L(i));theta3(i)=acos((P^2+L(i)^2-C^2)/(2*P*L(i)))-belta(i); theta4(i)=acos((P^2-L(i)^2-C^2)/(2*C*L(i)))-belta(i);x(i)=acos((C^2+L(i)^2-P^2)/(2*C*L(i)));fai(i)=x(i)+belta(i); PR(i)=(faimax-fai(i))*A1;u1(i)=(fai(i)-faimin)*A1; TF(i)=-R*(A1*sin(theta3(i)-theta2(i)))/(C*sin(theta3(i)-theta4(i))); theta21(i)=-thet1(i); theta31(i)=R*theta21(i)/P*sin(theta4(i)-theta2(i))/sin(theta3(i)-theta4(i)); theta41(i)=R*theta21(i)/C*sin(theta3(i)-theta2(i))/sin(theta3(i)-theta4(i)); vA(i)=theta41(i)*A1; theta22(i)=-thet2(i); theta42(i)=theta41(i)*(theta22(i)/theta21(i)-(theta31(i)-theta41(i))*cot(theta3(i)-theta4(i))+(theta21(i)-theta31(i))*cot(theta2(i)-theta3(i))); aA(i)=theta42(i)*A1; end ii=3; D(1,1)=0; for j=2:1:30 D(j,1)=(2-2*c^2*r^2*(1-2*q))*u(j,ii-1)+(1-2*q)*c^2*r^2*(u(j+1,ii-1)+u(j-1,ii-1))+c^2*r^2*q*(u(j+1,ii-2)+u(j-1,ii-2))-(1+2*c^2*r^2*q-deltt*v*0.5)*u(j,ii-2)-((u1(ii)-2*u1(ii-1)+u1(ii-2))/(deltt^2)+v*(u1(ii)-u1(ii-1))/(deltt))*(deltt^2); end if up1(ii)>=0&up(ii)<=lmdt ppj(ii)=W0*((up(ii))/lmdt); end if up1(ii)>0&up(ii)>lmdt ppj(ii)=W0; end if up1(ii)<0&up(ii)>(sp-lmdt) ppj(ii)=W0*(up(ii)-(sp-lmdt))/lmdt; end if up1(ii)<0&up(ii)<=(sp-lmdt) ppj(ii)=0; end D(31,1)=deltx*ppj(ii); u(:,ii)=A\D; up(ii+1)=sp-u(31,ii)-u1(ii);up1(ii+1)=-(u(31,ii)-u(31,ii-1))/deltt-(u1(ii)-u1(ii-1))/deltt; PRL(ii)=wr+Er*Ar/deltx*(-1.5*u(1,ii)+2*u(2,ii)-0.5*u(3,ii)); Mm(ii)=(2*lmdk*MH*Sm*omgg0*(omgg0-iMB*thet1(ii)))/(Sm^2*omgg0^2+(omgg0-iMB*thet1(ii))^2); if Mm(ii)>0 Med(ii)=iMB./u(1)*(2*lmdk*MH*Sm*omgg0*(omgg0-iMB*thet1(ii)))/(Sm^2*omgg0^2+(omgg0-iMB*thet1(ii))^2); else Med(ii)=iMB*u(1)*(2*lmdk*MH*Sm*omgg0*(omgg0-iMB*thet1(ii)))/(Sm^2*omgg0^2+(omgg0-iMB*thet1(ii))^2); end P2=Mm(ii)*thet1(ii)*iMB; if vA(ii)>0 Mef(ii)=TF(ii)*(PRL(ii)-Bw)*ycl^(-1)-Mc*sin(theta0+theta(ii)-tal); else Mef(ii)=TF(ii)*(PRL(ii)-Bw)*ycl^(1)-Mc*sin(theta0+theta(ii)-tal); end m2=PRL(ii)/9.8; Je(ii-1)=j1+j2*iMB*iMB+TF(ii-1)^2*m2; Je(ii)=j1+j2*iMB*iMB+TF(ii)^2*m2; dJe=(Je(ii)-Je(ii-1))/(theta(ii)-theta(ii-1)); theta(ii+1)=theta(ii)+thet1(ii)*deltt; thet1(ii+1)=thet1(ii)+thet2(ii)*deltt; thet2(ii+1)=1/Je(ii)*((Med(ii)-Mef(ii))-0.5*thet1(ii)*thet1(ii)*(dJe)); if theta(ii+1)>=2*pi theta(ii+1)=theta(ii+1)-2*pi; end for i=1:3 thetad(i)=theta(i+1); thetd1(i)=thet1(i+1); thetd2(i)=thet2(i+1); end save t1.txt t -ascii; save thetad.txt thetad -ascii; save thetd1.txt thetd1 -ascii; save thetd2.txt thetd2 -ascii; sys=P2; |
:L 上述源代码中的两个笑脸处原为P,粘过来居然成了这样子 |
解决了么? 可以联系我 QQ : 754962190 |
出现这个报错有很多可能性: 1。 输出P2 按照你的设置sizes.NumOutputs= 1 应为标量,而运算结果为向量 2。 输出应为实数,结果为复数,或者为空量 [ ]。 检查方法,在P2 那一行P2=Mm(ii)*thet1(ii)*iMB 的下一行 if vA(ii)>0 加一个 breakpoint 运行模型,然后查看该P2的值是多少。 如果为空量,则你前面读取 输入量u() 可能有问题. |
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