# Stabilize problem properties in controlsystem

Discussion in 'Homework Help' started by Chrill3, Oct 12, 2011.

1. ### Chrill3 Thread Starter New Member

Mar 8, 2010
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0
I have a characteristic equation that yields
s^3+as^2+s+b=0
I am supposed to determine the areas in ab-plane that correspond to a stabile system, I just dont know how to begin with, is it Ruth Hurwitz Iam supposed to use?, any hint is welcome

2. ### t_n_k AAC Fanatic!

Mar 6, 2009
5,448
782
You can certainly use Routh-Hurwitz criterion. Presumably you are considering a linear time-invariant system.

$s^3+as^2+s+b=0$