How can I simulate a difference equation in Simulink?

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Abraham
Abraham 2013-10-8
回答： cr 2013-10-8
I have solved a difference equation, and now I need to "verify my solution using Simulink".
The difference equation is y[n+2] + 3y[n+1]+2y[n] = 0 with initial conditions y[-1]=0 and y[-2]=1
The solution I got was y[n] = 2(-2)^n - (-1)^n.
How do I take this information and put it in Simulink?

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回答（1 个）

cr
cr 2013-10-8
Use N delay blocks in tandem to create y(n-N).

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