基于区间观测器的执行器故障检测  

Actuator fault detection based on interval observers

作　　者：郭胜辉[1,2] 朱芳来[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]苏州科技学院电子与信息工程学院,江苏苏州215009

出　　处：《控制与决策》2016年第6期1118-1122,共5页Control and Decision

基　　金：国家自然科学基金项目(61573256);高等学校博士学科点专项科研基金项目(20110072110015)

摘　　要：针对同时具有未知非线性函数(包括系统不确定性、外部干扰等)和执行器故障的非线性系统,提出基于区间观测器的故障检测方法.首先,在假定执行器故障不出现的前提下,基于未知非线性函数的上下界信息,提出两种区间观测器设计方法;然后,利用这两种区间观测器的输出和系统的真实输出,构造可以对执行器故障进行检测的残差,以此实现基于区间观测器的执行器故障检测.最后,通过两个仿真例子验证了所提出方法的正确性和有效性.For the problems of actuator fault detection based on interval observers for a class of nonlinear systems subjected to the unknown nonlinear function（including the system uncertainty, the external disturbance, etc）. Firstly, for the system without actuator fault, based on the known boundary information of the unknown nonlinear term, two interval observers are developed. Then, the residual errors that can be used for detecting the actuator fault are constructed by using the outputs of interval observers and those of systems. Thus, the problems of actuator fault detection based on interval observers are resolved. Finally, two numerical simulation examples are given to illustrate the correctness and the effectiveness of the proposed methods.

关 键 词：区间观测器 离散系统 故障检测 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]