| 多时滞不确定非线性系统传感器鲁棒故障诊断 |
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| 引用本文： | 于启红,夏扬,曹松银,丘宏.多时滞不确定非线性系统传感器鲁棒故障诊断[J].南京理工大学学报(自然科学版),2005,29(Z1):99-102. |
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| 作者姓名： | 于启红 夏扬 曹松银 丘宏 |
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| 作者单位： | 扬州大学,信息工程学院,江苏,扬州,225009 |
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| 基金项目： | 江苏省教育厅指导性项目(KK0310067)，扬州大学信息学科群项目(ISG030606) |
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| 摘 要： | 提出了一种带有多时滞不确定非线性系统的传感器鲁棒故障诊断方案,非线性仅与系统输入和输出有关,不确定性包括系统输入和状态等环节;通过构造观测器对状态和输出进行估计,得到具有鲁棒性的阈值;若系统的实际输出与估计输出之差(即残差)超出阈值,说明有故障发生,同时用自适应跟踪器对故障进行跟踪;在理论上证明了该方案的鲁棒性、灵敏度和稳定性,最后通过仿真说明了该方法的有效性。
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| 关 键 词： | 非线性系统 故障诊断 多时滞 自适应 鲁棒性 |
| 文章编号： | 1005-9830(2005)S0-0099-04 |
| 修稿时间： | 2005年5月28日 |
Robust Fault Diagnosis of Sensor in Nonlinear Many-time-delay Uncertain Systems |
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| YU Qi-hong,XIA Yang,CAO Song-yin,QIU Hong.Robust Fault Diagnosis of Sensor in Nonlinear Many-time-delay Uncertain Systems[J].Journal of Nanjing University of Science and Technology(Nature Science),2005,29(Z1):99-102. |
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| Authors: | YU Qi-hong XIA Yang CAO Song-yin QIU Hong |
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| Abstract: | The paper proposes a method for robust fault diagnosis of sensor in nonlinear many-time-delay uncertain systems.The nonlinearity is only related to the system inputs and outputs.The uncertainties include states and outputs.The system states and outputs are estimated through observers,which produces a robust threshold.Adaptive tracker tracks fault if the difference between system output and estimated output exceeds threshold.The analyses of robustness,sensitivity,stability of the scheme are given.The simulated results illustrate the effectiveness of the proposed method. |
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| Keywords: | nonlinear system fault diagnosis many-time-delay adaptability robustness |
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