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首页> 外文期刊>International Journal of Control >Fault detection and isolation for nonlinear non-affine uncertain systems via sliding-mode techniques
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Fault detection and isolation for nonlinear non-affine uncertain systems via sliding-mode techniques

机译:通过滑模技术对非线性非仿射不确定系统的故障检测和隔离

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摘要

This paper considers the fault detection and isolation problem for nonlinear uncertain non-affine systems. The proposed approach is based on an output-feedback stabilisation strategy, which exploits a Luenberger-like nonlinear observer. As a main result, a residual-based fault detection and isolation approach is developed, which relies on the measurable output, some of its derivatives, which are provided exactly by a uniform high-order sliding-mode differentiator, and the observer's state. The proposed methodology is able to detect some possible components and actuators faults, and to isolate, under some mild conditions, the actuator faults from those ones in components. Simulation results illustrate the feasibility of the proposed approach.
机译:本文考虑了非线性不确定非仿射系统的故障检测和隔离问题。 所提出的方法基于输出反馈稳定策略,该策略利用Luenberger的非线性观察者。 作为主要结果,开发了基于残余的故障检测和隔离方法,依赖于可测量的输出,其一些衍生物通过均匀的大阶滑模差分器和观察者的状态提供。 所提出的方法能够检测一些可能的部件和执行器故障,并在一些温和条件下隔离,致动器故障来自组件中的致动器故障。 仿真结果说明了所提出的方法的可行性。

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