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On the robust fault detection via a sliding mode disturbance observer

机译:通过滑模扰动观测器进行鲁棒故障检测

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This paper deals with robust fault detection for non-linear systems. This problem is usually solved by designing an observable subsystem which is only affected by the fault and not by the control and disturbance inputs. However, such a subsystem may not exist so that the so-called fundamental problem of residual generation (FPRG) is not solvable. The aim of the present paper is to design a fault detection filter when the conditions for the existence of a solution to the non-linear FPRG are not satisfied. Our approach is made in a geometric context. Under some decoupling assumptions, the design of sliding mode observers allows us to reconstruct the disturbance inputs and then to generate an effective residual. An illustrative example is given throughout the paper.
机译:本文讨论了非线性系统的鲁棒故障检测。通常通过设计一个仅受故障影响而不受控制和干扰输入影响的可观察子系统来解决此问题。但是,这样的子系统可能不存在,因此不能解决所谓的残差产生的基本问题(FPRG)。本文的目的是设计一种当非线性FPRG解的存在条件不满足时的故障检测滤波器。我们的方法是在几何背景下进行的。在一些解耦假设下,滑模观测器的设计使我们能够重建干扰输入,然后生成有效残差。全文中给出了一个说明性示例。

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