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讨论了一类含有状态和输入未知参变量的非线性系统的故障诊断问题 .在满足一些几何条件的情况下 ,该类系统可化成两类不同的子系统 .对于其中一类不受故障影响的子系统 ,得到了其非线性自适应观测器及参数自适应律的设计 ;另一类受故障影响的子系统的状态是可测的 ,给出了该类子系统的基于模型监测和故障诊断的观测方案 .然后 ,给出了用于验证本文所提方案的数字示例 .
In this paper, the fault diagnosis of a class of nonlinear systems with state and unknown parameters is discussed. Under certain geometric conditions, the system can be divided into two different types of subsystems. For one kind of fault-free system Subsystem, the nonlinear adaptive observer and the parameter adaptive law design are obtained. The other states of the subsystems affected by the fault are measurable, and the model-based monitoring and fault diagnosis of such subsystems are given Then we give a numerical example for verifying the proposed solution.