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Unformatted text preview: s 3 –12 s , place these coefficients in the s 3 row, and continue. Investigate sign changes from the s 3 row to the s row to determine the stability of the 4 th order even polynomial. Since there are no sign changes and the roots of an even polynomial are symmetric about the origin, all four poles are on the imaginary axis. To determine the location of the other Stability pole, investigate sign changes from the s 4 row to the s 5 row. Since there is one sign change, the remaining pole is in the right s–plane. Therefore, there are four poles on the imaginary axis and one pole in the right s–plane. The Matlab code for computing the closed–loop pole locations is roots([1 –2 3 –6 2 –4]) The closed–loop poles are located at 2, ± 2 j , and ± j . 2...
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This note was uploaded on 02/01/2012 for the course MECH ENG 279 taught by Professor Landers during the Spring '11 term at Missouri S&T.
 Spring '11
 LANDERS

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