双线性系统BFDF故障诊断

Fault Diagnosis of Bilinear System BFDF

故障诊断技术是系统和控制研究的一个重要领域,在航空航天、核反应堆、热电厂、机械、化工等一系列工程技术领域得到了成功的应用。应用双线性系统故障检测滤波器(BFDF)方法,对带有未知输入的双线性系统进行了故障检测,给出了BFDF存在的充分条件和设计BFDF的具体步骤。同时,与双线性系统故障观测器(BFDO)方法进行了比较。相比之下,BFDF方法具有结构简单,设计步骤明确等优点,由BFDF产生的残差向量对未知输入具有较强的鲁棒性,对执行器、元件和传感器故障都非常敏感,残差向量对不同的故障具有不同的方向,易于故障隔离。

Technology is an important field in which system and control study that the trouble is diagnosed, application succeeding in such a series of engineering fields as Acre-Space, nuclear reactor, heat and power plant, machinery, chemical industry, etc. Use one pair of linear systematic troubles to measure the method of the wave filter （BFDF）, measure the trouble to the pair of linear systems with unknown introduction, provide the abundant condition that BFDF exists and concrete step of designing BFDF. Meanwhile, compared with the method of the observing device of one pair of linear systematic troubles （BFDO）. By contrast, BFDF method is of simple structure, design the advantage such as being clear of the step, it is stupid and excellent that the incomplete difference vector quantity produced from BFDF has the stronger one to unknown introduction, to the carrying out device, the component and sensor trouble are all very sensitive, the vector quantity of incomplete difference has different directions to different troubles, the easy trouble is isolated.