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Unformatted text preview: Real The poles of 2 2 1 ) ( 2 + + = s s s G are j s ±-= 1 2 , 1 x x 2 Note that each point on the s-plane represents an exponential function e st If any pole of the transfer function lies to the right of the imaginary axis, i.e. in the right half of the s-plane, the real part of that pole will be positive. This means that one exponential factor in the natural response will tend toward infinity with increasing time. In this case the system is said to be dynamically unstable. On the other hand, if all the poles are in the left half-plane , all the exponentials will die out with increasing time. As a conclusion, a necessary and sufficient condition for a linear dynamic system to be dynamically stable is that all its poles lie in the left half of the s-plane....
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This note was uploaded on 10/24/2011 for the course AEE 463 taught by Professor Melin during the Spring '11 term at Middle East Technical University.
- Spring '11