一种欠量测系统传感器故障检测与隔离方法

Method for Sensor Fault Detection and Isolation for Under-Measurement System

为了解决欠量测系统传感器故障检测与隔离这一难题,在对传感器故障进行合理建模的基础上,首先,借助输出方程,利用最小二乘和基础解系的方法,将传感器故障特征转换到系统状态模型中;然后,提出一种残差产生器的设计方法并给出其参数求解方法;最后,用算例对上述设计结果的有效性进行计算机仿真验证。

In order to solve the problem of sensor fault detection and isolation for under-measurement system, firstly, we resort the output equation to convert sensor fault difficult problem into state disturbance of the dynamic system with least-squares solution and basic solution series. Then, a residual generator is used to fault detection and isolation is designed. In addition, we put forward the method for solving unknown parameters in it. Finally, simulations results demonstrate that the method of basic solution series is more general and practical.