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J. S. ANSARI 《International journal of control》2013,86(1):193-198
Conditions for the stability of certain typos of first-order nonlinear difTerential-difforonce equations are derived. Some of the results are applicable to a simplified model of certain distributed parameter systems, such as heat exchanger. 相似文献
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This paper is concerned with neutral stochastic delay differential equations with Markovian switching (NSDDEs-MS). A kind of ψ ??function is introduced and some criteria on the attractor for the product of the ψ ??function are obtained. By the new criteria, the almost sure stability with the general decay rate of NSDDEs-MS could be examined, including the exponential stability and the polynomial stability. Finally, an example is provided to illustrate the applications of our results clearly. 相似文献
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Iván G. Velásquez Juan I. Yuz Mario E. Salgado 《International journal of control》2013,86(12):2644-2656
This article proposes an optimal control design technique to ensure that the closed-loop poles are assigned to prescribed locations in the complex plane. A key element in this approach is the usage of orthonormal basis functions to parametrise the main design parameter. This goal is achieved by using a quadratic cost based optimisation approach, considering control effort penalisation as well as cheap control. Youla parametrisation is used, subject to a set of constraints which guarantee stability, zero steady error to constant references and disturbances, and yielding the prescribed set of closed-loop poles. 相似文献
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