H. Kokame

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The derivative feedback is a classical but representative means in the design of control systems, and for practical reasons it is often replaced by its difference approximation. As the resulting closed-loop system involves a time-delay, it does not necessarily preserve stability however accurate the approximation is. Following the terminology of Palmor(More)
1 with 2 [0; ] and with 2 [0; ` 1 (0)]. therefore we can conclude that the given time–delay system (26) is 0.2-stable. Even for the nominal system, we havè 2(0) = 2 (A0 + I) + 2 2 i=1 jAije h = 00 : 6571 < 0 : By Corollary 1, it is 0. 2-stable too. V. CONCLUSION This paper has presented several results in which we use some simple matrix operations or draw(More)
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