What is the difference between them?

2019 7 17
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更新时间：2019 7 17
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These code are right:
a=0.336;
Ta=9.476;
Te=1.208;
Tw=1.498;
eqh=[0.661;0.619;0.568];
ex=[-1.24;-1.346;-1.441];
en=-ex;
ey=[0.376;0.705;0.968];
eqx=[-0.309;-0.357;-0.392];
eh=[1.594;1.583;1.545];
eyqh=[0.642;0.78;0.897];
a0=a*Ta*Te^2;
syms bt Td Ki Kp;
a1=[];a2=[];a3=[];a4=[];exqh=[];
for i=1:3
Kp=1/bt;
exqh(i)=en(i)*eqh(i)+eqx(i)*eh(i);
Ki=1/(bt*Td);
a1=Ta*Tw*eqh(i)+a*Te^2*en(i)+a*Te^2*ey(i)*Kp
a1(i)=a1
end
But these code are wrong:
a=0.336;
Ta=9.476;
Te=1.208;
Tw=1.498;
eqh=[0.661;0.619;0.568];
ex=[-1.24;-1.346;-1.441];
en=-ex;
ey=[0.376;0.705;0.968];
eqx=[-0.309;-0.357;-0.392];
eh=[1.594;1.583;1.545];
eyqh=[0.642;0.78;0.897];
a0=a*Ta*Te^2;
syms bt Td Ki Kp;
a1=[];a2=[];a3=[];a4=[];exqh=[];
for i=1:3
Kp=1/bt;
exqh(i)=en(i)*eqh(i)+eqx(i)*eh(i);
Ki=1/(bt*Td);
a1(i)=Ta*Tw*eqh(i)+a*Te^2*en(i)+a*Te^2*ey(i)*Kp
end
The difference between them is
a1=Ta*Tw*eqh(i)+a*Te^2*en(i)+a*Te^2*ey(i)*Kp
a1(i)=a1
and
a1(i)=Ta*Tw*eqh(i)+a*Te^2*en(i)+a*Te^2*ey(i)*Kp

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