基于自适应原理诊断传感器偏差故障的方法

A DIAGNOSIS METHOD FOR SENSOR BIAS FAULT

在控制系统中，传感器是容易发生故障的部件，研究传感器故障诊断问题具有重要意义。介绍了一种基于自适应原理的传感器偏差故障诊断方法，首先将传感器偏差故障表示为系统状态，然后应用自适应原理估计出传感器偏差故障。仿真表明，用这种方法诊断传感器偏差故障是可行的。

In the paper,the sensor FDI is discussed,a diagnosis method is presented for sensor bias fault based on the adaptive principle.The bias fau lt is expressed as system states and estimated by means of adaptive principle. The simulation results show that the way is characterized with high precision.An d the gain and bias can be estimated simultaneously if the way is modified.