平面系统执行机构故障诊断:约束满足方法

Ramatou Seydou, T. Raïssi, A. Zolghadri, D. Efimov
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引用次数: 14

摘要

针对一类特殊的非线性系统,即所谓的平面系统,本文描述了一种基于集成员的鲁棒故障检测与隔离技术。所提出的策略包括检查期望输入值是否属于使用系统模型和测量输出向量的导数计算的估计可行集。使用数值微分器计算输出导数。输入向量的集隶属度估计器设计考虑了测量噪声,从而使一致性测试具有鲁棒性。通过一个受致动器故障影响的三罐系统仿真,说明了该策略的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Actuator fault diagnosis for flat systems: A constraint satisfaction approach
This paper describes a robust set-membership-based Fault Detection and Isolation (FDI) technique for a particular class of nonlinear systems, the so-called flat systems. The proposed strategy consists in checking if the expected input value belongs to an estimated feasible set computed using the system model and the derivatives of the measured output vector. The output derivatives are computed using a numerical differentiator. The set-membership estimator design for the input vector takes into account the measurement noise thereby making the consistency test robust. The performances of the proposed strategy are illustrated through a three-tank system simulation affected by actuator faults.
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