A method is proposed for the design of constant-gain feedback control laws which reduce trajectory sensitivity to small system parameter variations and ensure the prescribed degree of stability for Discrete-Time Systems. The selected performance index is of standard linear regulator type; modified to include a quadratic sensitivity term and weighting function ( alpha )**2**k with alpha greater than 1, which ensures that the closed-loop poles will lie inside the circle of radius 1/ alpha in the complex plane. An example of a two-area load frequency control system is presented to illustrate the application of the design procedure.

Madan Gopal

Electrical Engineering

(SoE) School of Engineering

J.G. Ghodekar

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