posFeedback_inclass - Root Locus for Positive Feedback...

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Unformatted text preview: Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, T ( s ) = KG ( s ) H ( s ) 1- KG ( s ) H ( s ) Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, T ( s ) = KG ( s ) H ( s ) 1- KG ( s ) H ( s ) The RL is now defined wherever KG ( s ) H ( s ) = 1 k 360 o where k is any integer. Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, T ( s ) = KG ( s ) H ( s ) 1- KG ( s ) H ( s ) The RL is now defined wherever KG ( s ) H ( s ) = 1 k 360 o where k is any integer. This affects the following rules: Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, T ( s ) = KG ( s ) H ( s ) 1- KG ( s ) H ( s ) The RL is now defined wherever KG ( s ) H ( s ) = 1 k 360 o where k is any integer. This affects the following rules: 3. Real-axis segments Root Locus for Positive Feedback Systems If feedback is positive then some of the regular rules of root locus must be modified . The closed-loop transfer function becomes, T ( s ) = KG ( s ) H ( s ) 1- KG ( s ) H ( s ) The RL is now defined wherever KG ( s ) H ( s ) = 1 k 360 o where k is any integer. This affects the following rules:any integer....
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This note was uploaded on 09/07/2009 for the course ENGINEERIN 5821 taught by Professor Andrewvardy, during the Spring '09 term at Memorial University.

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posFeedback_inclass - Root Locus for Positive Feedback...

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