How to update new value in next iteration?

2013 5 26
3 个回答
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0 个投票

How can i update that (ending value) U1t or U2t in next iteration.
U1t and U2t will be changed U1 and U2
(1st iteration ending value -> 2nd iteration starting value).
S12t=6+2*1i;
S01t=10+5*1i;
U1=110;
U2=110;
R12 = 16.2+24*1i;
U0i=115;
R01= 15.75+31.2*1i;
dx01=106.125;
dx12=81;
U20=10;
zoruu=0.01;
iteration_number = 0;
while true
iteration_number = iteration_number + 1;
fprintf('Starting iteration #%d\n', iteration_number);
dQ12=dx12*U2.^2*10.^-6;
S12i=S12t-complex(0,dQ12);
DS12 =((real(S12i).^2+imag(S12i).^2)/U2.^2)*R12;
S12ii=DS12+S12i;
S12e=S12ii-complex(0,dQ12);
S01i=S12e+S01t;
dQ01=dx01*U1.^2*10.^-6;
S01ii=S01i-complex(0,dQ01);
DS01=((real(S01ii).^2+imag(S01ii).^2)/U1.^2)*R01;
dQ01i=dx01*U0i.^2*10.^-6;
S01ii2=S01ii+DS01;
S01iii=S01ii2-complex(0,dQ01i);
dU01i=(real(S01ii2)*real(R01)+imag(S01ii2)*imag(R01))./U0i;
dU01ii=(real(S01ii2)*imag(R01)-imag(S01ii2)*real(R01))./U0i;
U1t=sqrt((U0i-dU01i).^2+dU01ii.^2);
dU12i=(real(S12ii)*real(R12)+imag(S12ii)*imag(R12))./U1t;
dU12ii=(real(S12ii)*imag(R12)-imag(S12ii)*real(R12))./U1t;
U2t=sqrt((U1t-dU12i).^2+dU12ii.^2);
Y=U1t-U1;
H=U2t-U2;
if max(Y,H)<zoruu;
break;
end;
end
Iteration must end when max(Y,H)<0.01
Thank you

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Walter Roberson
Walter Roberson 2013-5-26
Yes, that is what you programmed, that the iterations will end when that condition holds.

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 采纳的回答

Walter Roberson
Walter Roberson 2013-5-26

0 个投票

After the assignment to H, assign
U1 = U1t;
U2 = U2t;
Unless, that is, you need the U1 value to be unchanged if the iteration should stop. If that is the case, put those two statements after the "end" for the "if"

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0 个投票

Sorry if I misunderstood. It would be just that?
S12t=6+2*1i;
S01t=10+5*1i;
U1=110;
U2=110;
R12 = 16.2+24*1i;
U0i=115;
R01= 15.75+31.2*1i;
dx01=106.125;
dx12=81;
U20=10;
zoruu=0.01;
iteration_number = 0;
while true
iteration_number = iteration_number + 1;
fprintf('Starting iteration #%d\n', iteration_number);
dQ12=dx12*U2.^2*10.^-6;
S12i=S12t-complex(0,dQ12);
DS12 =((real(S12i).^2+imag(S12i).^2)/U2.^2)*R12;
S12ii=DS12+S12i;
S12e=S12ii-complex(0,dQ12);
S01i=S12e+S01t;
dQ01=dx01*U1.^2*10.^-6;
S01ii=S01i-complex(0,dQ01);
DS01=((real(S01ii).^2+imag(S01ii).^2)/U1.^2)*R01;
dQ01i=dx01*U0i.^2*10.^-6;
S01ii2=S01ii+DS01;
S01iii=S01ii2-complex(0,dQ01i);
dU01i=(real(S01ii2)*real(R01)+imag(S01ii2)*imag(R01))./U0i;
dU01ii=(real(S01ii2)*imag(R01)-imag(S01ii2)*real(R01))./U0i;
U1t=sqrt((U0i-dU01i).^2+dU01ii.^2);
dU12i=(real(S12ii)*real(R12)+imag(S12ii)*imag(R12))./U1t;
dU12ii=(real(S12ii)*imag(R12)-imag(S12ii)*real(R12))./U1t;
U2t=sqrt((U1t-dU12i).^2+dU12ii.^2);
Y=U1t-U1;
H=U2t-U2;
U1= U1t;
U2= U2t;
if max(Y,H)<zoruu;
break; end; end

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Jan
Jan 2013-5-26
Please learn how for format code - follow the "? Help" link. Thanks.

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Light
Light 2013-5-26

0 个投票

Thank you very much!! I put it wrong place :-)

3 个评论
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Image Analyst
Image Analyst 2013-5-26
编辑：Image Analyst 2013-5-27
You put even this response in the wrong place too! I'm pretty sure this response should have been a "Comment" to someone rather than a new "Answer" to your original question.
Light
Light 2013-5-27
编辑：Light 2013-5-27
Really? Walter Robinson Please tell me. Where can i put this (U1=U1t, U2=U2t)
Is that right??
....
....
Y=U1t-U1;
H=U2t-U2;
if max(Y,H)<zoruu; break; end;
U1= U1t;
U2= U2t; end
Y=U1t-U1;
H=U2t-U2;
U1= U1t;
U2= U2t;
if max(Y,H)<zoruu;
break; end; end

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