simulink: solving differential equations

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George Francis
George Francis 2018 年 2 月 19 日
Hello guys I have transfer function which is below. And I need to create block diagram in simulink without using block "transfer function". I find out that I can use corresponding differential equation which should look like this:
a2*y'' + a1*y' + 1 = K*u
transfer f= ----------------
a2*s^2 + a1*s + 1
Here is my solution but I don't think it's correct, because I think I'm missing the part (+1) from differential equation.
So can somebody help me how should I fix it?

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