On the active fault-tolerant control for descriptor systems, the problem of observer-based active fault-tolerant control for descriptor linear systems is considered.

关于广义系统的主动容错控制，研究了基于状态观测器的线性广义系统的主动容错控制的问题。

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Generally, passive and active fault tolerant control systems depend on system models-quantitative, qualitative or quasi - quantitative.

被动容错控制和主动容错控制多依赖于系统的模型：定量，半定量或定性模型。

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Then the main results in robust fault-tolerant control of nonlinear systems are introduced in two classes: passive and active;

然后分被动式和主动式介绍了非线性系统鲁棒容错控制的研究现状；

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Then the main results in robust fault-tolerant control of nonlinear systems are introduced in two classes: passive and active;

然后分被动式和主动式介绍了非线性系统鲁棒容错控制的研究现状；

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