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April 15th, 2015, 11:33 AM   #1
Joined: Apr 2015
From: NY

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Absolute stability (Popov criterion)

I have the following problem:

I have solved the first part and found that the system is stable for the sector [0,60.0] with gamma=0.56. I am however unsure how to solve the second part.

I have plotted the sector and found the two functions:

Where y2 satisfies the criterion but y1 does not. How do I show that the simulation results are consistent with the sector?
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