| 基于观测器的汽车发动机电控系统故障诊断方法研究 |
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| 引用本文： | 袁翔,邓华.基于观测器的汽车发动机电控系统故障诊断方法研究[J].长沙交通学院学报,2000,16(2):35-39. |
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| 作者姓名： | 袁翔 邓华 |
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| 作者单位： | 长沙交通学院,汽车工程系,湖南,长沙,410076 |
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| 摘 要： | 针对汽车发动机电控系统负载不可测且存在随机干扰的情况，采用基于数学模型的未知输入故障检测观测器方法，研究其故障诊断问题。合理选择残差信号的阈值，能够可靠地诊断汽车发动机电控系统负载不可测且存在随机干扰时的故障。仿真结果验证了本方法的有效性。
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| 关 键 词： | 汽车发动机 电控系统 故障诊断 故障检测观测器 |
Observer-Based Diagnosis Method of Electronically Controlled Systems in Automotive Engines |
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| YUAN Xiang,DENG Hua.Observer-Based Diagnosis Method of Electronically Controlled Systems in Automotive Engines[J].Journal of Changsha Communications University,2000,16(2):35-39. |
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| Authors: | YUAN Xiang DENG Hua |
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| Abstract: | The
application of unknown input fault detection observers( UIFDOs ) to the diagnosis of
electronically controlled systems in automotive engines with unmeasurable load torque and
random disturbances is presented in this paper. The faults in the automotive engine
control systems can be reliably diagnosed by the proposed method through suitable choice
of the threshold for the residual signals of the UIFDOs. Simulation results show the
effectiveness of the proposed method. |
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