Then, by using optimal control theory, duality principle, linear matrix inequation, and state observer and so on technology, fault diagnosis and fault-tolerant approaches are proposed for systems with different time-delays.
然后利用最优控制理论、对偶原理、线性矩阵不等式及状态观测等技术,提出了在系统中含有不同时滞情况下的故障诊断和容错控制方法。
参考来源 - 时滞系统基于观测器的故障诊断和容错方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Duality principle is a powerful tool for the analysis of topological structure of power electronic circuits.
对偶原理是分析电力电子电路拓扑结构的有力工具。
The article deals briefly with the "ideal element" and "Duality principle", which includes methods of teaching of the author.
本文简要而概括地介绍了“理想元素”和“对偶原理”，表明了作者在高等几何教学方法上的见解。
The dual law in lattice theory is introduced and some concepts and properties relative to it are discussed, while generalizing the concept of duality and the idea of the duality principle.
推广了对偶的概念与对偶原理的思想，在格论中引入了对偶律，并讨论了与之相关的一些概念和性质。
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