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一种非线性系统被控对象故障诊断方法
引用本文:黄俊杰,蒋蓁,徐新立,曾炳寿.一种非线性系统被控对象故障诊断方法[J].控制与决策,2014,29(5):925-928.
作者姓名:黄俊杰  蒋蓁  徐新立  曾炳寿
作者单位:1. 上海大学机电工程与自动化学院,上海200072;
2. 河南理工大学机械与动力工程学院,河南焦作454000
基金项目:

国家自然科学基金项目(61175092)

摘    要:

控制系统中的传感器、执行器和被控对象的故障检测与诊断往往是把执行器和被控对象视为一个整体来研究, 这不利于故障的决策与处理. 对此, 设计了非线性系统故障诊断的滑模观测器, 提出一种诊断被控对象故障的方法, 即对非线性系统和执行器同时进行观测, 根据两观测器残差的变化情况判断出非线性系统中传感器、执行器和被控对象故障. 最后以单输入单输出非线性系统为例进行仿真, 验证了该方法的有效性.



关 键 词:

非线性系统|滑模观测器|被控对象|故障诊断|仿真

收稿时间:2013/2/26 0:00:00
修稿时间:2013/4/19 0:00:00

Method on component fault diagnosis for nonlinear systems
HUANG Jun-jie JIANG Zhen XU Xin-li ZENG Bing-shou.Method on component fault diagnosis for nonlinear systems[J].Control and Decision,2014,29(5):925-928.
Authors:HUANG Jun-jie JIANG Zhen XU Xin-li ZENG Bing-shou
Abstract:

The actuator and component fault is always regarded as a whole for the fault detection and diagnosis in control systems, which does not favor the decision and processing. The sliding mode observer is designed for the nonlinear fault diagnosis and the method is proposed for the fault diagnosis of the component. The whole nonlinear system and the actuator system are simultaneously observed. The faults of the sensor, the actuator and the component are diagnosed according to the residual value changes of the two observers. Finally, the single-input single-output nonlinear system is simulated, which verifies the effectiveness of the proposed method.

Keywords:

nonlinear systems|sliding mode observer|components|fault diagnosis|simulation

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