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The characteristic equation of a feedback control system is given bys^3+5s^2+(K+6)s+K=0. In the root loci diagram, the asymptotes of the root loci for large K meet at a point in the s plane whose coordinates are:(a) (2,0)(b) (-1,0)(c) (-2,0)(d) (-3,0)The question was asked during an interview.My query is from Stability Analysis by Describing Functions in portion Nonlinear Systems of Control Systems |
Answer» CORRECT answer is (c) (-2,0) For EXPLANATION: The point is calculated by using ROUTH Hurwitz table and then equating the S^0 term EQUAL to zero. |
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