论文标题
使用差分平面度的非线性三坦克系统故障检测和隔离
Nonlinear Three-Tank System Fault Detection and Isolation Using Differential Flatness
论文作者
论文摘要
液压系统上的故障检测和隔离对于确保安全和避免灾难非常重要。在本文中，基于非线性系统的平稳性特性的故障检测和隔离方法是在三坦克系统上应用的，该系统被认为是液压系统的流行原型。具体而言，使用平面输出测量结果生成故障指示器，称为残基，为故障隔离，引入了隔离性的定义。该定义允许表征对故障隔离有用的平面输出。提出了灵敏度分析，以改善该方法的鲁棒性。在传感器和执行器上考虑乘法故障。
Fault detection and isolation on hydraulic systems are very important to ensure safety and avoid disasters. In this paper, a fault detection and isolation method, based on the flatness property of nonlinear systems, is experimentally applied on the three-tank system, which is considered as a popular prototype of hydraulic systems. Specifically, fault indicators, called residues, are generated using flat output measurements, and for the purpose of fault isolation, a definition of the isolability is introduced. This definition allows the characterization of flat outputs that are useful for fault isolation. A sensitivity analysis is proposed in order to improve the robustness of the method. Multiplicative faults are considered on sensors and actuators.
