Madanpal S. Verma

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It has often been believed that inH ∞-optimal synthesis methods, the resulting controllers have order much greater than the order of the plant. Recently, Limebeer and Hung [9] have shown that inH ∞-optimal synthesis problems of the “first kind” both optimal as well as suboptimal controllers have order which is no greater than the order of the plant.(More)
TheH ∞-optimization approach to feedback system design was introduced in the context of sensitivity minimization. This problem formulation yielded improper optimal controllers and did not incorporate design issues related to robustness and plant input cost. A more realistic problem formulation incorporating a weighting on the plant input was suggested(More)
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