基于交互多模估计策略的故障检诊方法

针对多模自适应（ＭＭＡＥ）故障检诊（ＦＤＤ）方法的局限性，提出了一种基于交互多模（ＩＭＭ）估计策略的动态系统中多重故障的检诊方法。交互多模估计是针对包含有结构以及参数的系统的一种效率较好的自适应估计技术，它提供了故障检测、诊断和状态估计的集中框架。通过对在传感器和作动器中含有多个故障飞机的仿真。结果表明，所提供的方法比其它方法能够更快、更可靠地检测和隔离出多重故障。

Detection and Diagnosis of Failures Based on Interactive Multiple-Model Estimator

An approach to detection and diagnosis of multiple failures in a dynamic system is proposed to improve multiple model adaptive estimator.It is based on the interactive multiple model (IMM)estimation algorithm which is one of the most cost effective adaptive estimation techniques for systems with structure and parameter changes and provides an integral framework for fault detection, diagnosis and state estimation. This approach is able to detect and isolate multiple faults more quickly and more reliably than many existing approaches.The advantages are illustrated in aircraft examples with several faults of both sensors and actuators.Moreover, the inherent parallel structure of IMM algorithm makes it attractive for real time FDD.