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基于改进LS-SVM的航空发动机传感器故障诊断与自适应重构控制

蔡开龙 谢寿生 杨伟 吴勇

蔡开龙, 谢寿生, 杨伟, 吴勇. 基于改进LS-SVM的航空发动机传感器故障诊断与自适应重构控制[J]. 航空动力学报, 2008, 23(6): 1118-1126.
引用本文: 蔡开龙, 谢寿生, 杨伟, 吴勇. 基于改进LS-SVM的航空发动机传感器故障诊断与自适应重构控制[J]. 航空动力学报, 2008, 23(6): 1118-1126.
CAI Kai-long, XIE Shou-sheng, YANG Wei, WU Yong. Fault diagnosis and adaptive reconfiguration control for sensors in aeroengine based on improved least squares support vector[J]. Journal of Aerospace Power, 2008, 23(6): 1118-1126.
Citation: CAI Kai-long, XIE Shou-sheng, YANG Wei, WU Yong. Fault diagnosis and adaptive reconfiguration control for sensors in aeroengine based on improved least squares support vector[J]. Journal of Aerospace Power, 2008, 23(6): 1118-1126.

基于改进LS-SVM的航空发动机传感器故障诊断与自适应重构控制

基金项目: 军队科研基金;空军工程大学院优秀博士论文创新基金(BC0502)

Fault diagnosis and adaptive reconfiguration control for sensors in aeroengine based on improved least squares support vector

  • 摘要: 提出了一种基于改进LS-SVM的航空发动机传感器故障诊断与自适应重构控制方法.该方法通过给误差变量赋予不同权值因子提高LS-SVM的鲁棒性,采用修剪算法提高LS-SVM的稀疏性;该方法从某涡扇发动机输入输出空间中建立其正常模型,采用阈值判别法对传感器故障进行实时监视与诊断,并用模型输出值代替故障传感器测量值反馈回闭环控制系统,实现对发动机的自适应重构控制.仿真结果表明,该方法能及时准确地定位故障,并进行有效的自适应重构控制.

     

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出版历程
  • 收稿日期:  2007-05-25
  • 修回日期:  2007-09-17
  • 刊出日期:  2008-06-28

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