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Unformatted text preview: to obtain 6 s , place this coefficient in the s 1 row, and continue. Investigate sign changes from the s 1 row to the s row to determine the stability of the 2 nd order even polynomial. Since there are no sign changes and the roots of an even polynomial are symmetric about the origin, both poles are on the imaginary axis. To determine the location of the other poles, investigate sign changes from the s 2 row to the s 4 row. Since there are no sign changes, the remaining poles are in the left s–plane. Therefore, there are two poles on the imaginary axis and two poles in the left s–plane. Stability The Matlab code for computing the closed–loop pole locations is roots([1 4 8 20 15]) The closed–loop poles are located at –3, –1, and ± 2.236 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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