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Root Locus Sketching Rules

Root Locus Sketching Rules. Negative Feedback. RL Rules for Negative Feedback. Root Locus Sketching Rules (negative feedback) 1. Locus exists on real axis where the number of poles and zeros to the right is odd. 2. Roots follow branches from poles to zeros or infinity as K increases

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Root Locus Sketching Rules

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  1. BAE 3023 Root Locus Sketching Rules Negative Feedback

  2. RL Rules for Negative Feedback BAE 3023 • Root Locus Sketching Rules (negative feedback) 1. Locus exists on real axis where the number of poles and zeros to the right is odd. 2. Roots follow branches from poles to zeros or infinity as K increases 3. Number of branches equals number of poles 4. Number of branches to infinity is number of poles minus number of zeros. 5. Branches to infinity follow asymptotes at the following angles:

  3. Angle of Asymptotes BAE 3023

  4. RL Rules for Negative Feedback BAE 3023 6. The center of gravity of the asymptotes is: 7. The angle of departure from a complex pole can be calculated

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