matlab双坐标绘制

来源：学生作业帮编辑：作业帮分类：综合作业时间：2024/09/02 17:25:00

matlab双坐标绘制
程序代码前面部分不动,想要绘制以i为横坐标,Tjc和COP为双纵坐标的图,不改变程序中所使用的for循环.
Ta=294
Cc=400
Ch=400
Ca=400
Riso=1.085
Rcp=0.38
Rhs=0.2
Qa=0
U=12
for i=1:200
Tc(1)=Ta;
Th(1)=Ta;
Tjc(1)=Ta;
I(1)=U/1.959
Qc(i)=0.050667*I(i)*Tc(i)-0.5*I(i)*I(i)*1.959-0.518*(Th(i)-Tc(i));
Qh(i)=0.050667*I(i)*Th(i)+0.5*I(i)*I(i)*1.959-0.518*(Th(i)-Tc(i));
Qc1(i)=0.050667*I(i)*Tc(i);
Qc2(i)=0.5*I(i)*I(i)*1.959+0.518*(Th(i)-Tc(i));
Tc(i+1)=10*((Tjc(i)-Tc(i))/Rcp-Qc(i))/Cc+Tc(i);
Th(i+1)=10*(Qh(i)-(Th(i)-Ta)/Rhs)/Ch+Th(i);
Tjc(i+1)=10*((Ta-Tjc(i))/Riso+Qa-Qc(i))/Ca+Tjc(i);
I(i+1)=(U-0.050667*(Th(i+1)-Tc(i+1)))/1.959;
W(i)=Qh(i)-Qc(i);
COP(i)=Qc(i)/W(i);
end

Ta=294;
Cc=400;
Ch=400;
Ca=400;
Riso=1.085;
Rcp=0.38;
Rhs=0.2;
Qa=0;
U=12;
ii=[];
for i=1:200
Tc(1)=Ta;
Th(1)=Ta;
Tjc(1)=Ta;
I(1)=U/1.959;

Qc(i)=0.050667*I(i)*Tc(i)-0.5*I(i)*I(i)*1.959-0.518*(Th(i)-Tc(i));
Qh(i)=0.050667*I(i)*Th(i)+0.5*I(i)*I(i)*1.959-0.518*(Th(i)-Tc(i));
Qc1(i)=0.050667*I(i)*Tc(i);
Qc2(i)=0.5*I(i)*I(i)*1.959+0.518*(Th(i)-Tc(i));
Tc(i+1)=10*((Tjc(i)-Tc(i))/Rcp-Qc(i))/Cc+Tc(i);
Th(i+1)=10*(Qh(i)-(Th(i)-Ta)/Rhs)/Ch+Th(i);
Tjc(i+1)=10*((Ta-Tjc(i))/Riso+Qa-Qc(i))/Ca+Tjc(i);
I(i+1)=(U-0.050667*(Th(i+1)-Tc(i+1)))/1.959;
W(i)=Qh(i)-Qc(i);
COP(i)=Qc(i)/W(i);
ii=[ii,i];

end

plotyy(ii,Tjc(2:end),ii,COP)

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