基于T-S模糊模型的航空发动机非线性分布式控制系统故障诊断

翟旭升; 谢寿生; 苗卓广; 彭靖波; 张子阳; 王磊

基于T-S模糊模型的航空发动机非线性分布式控制系统故障诊断

1.
空军工程大学航空航天工程学院, 西安 710038
2.
空军第一航空学院航空机械工程系, 河南信阳 464000

基金项目: 中国博士后科学基金(20100481498)

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出版历程
- 收稿日期: 2012-06-27
- 刊出日期: 2013-06-28

Fault detection of aero-engine non-linear distributed control system based on T-S fuzzy model

1.
The Aeronautical and Astronautical Engineering Institute, Air Force Engineering University, Xi'an 710038, China
2.
The Aero-Mechanical Engineering Department The First Aeronautical College of Air Force, Xinyang Henan 464000, China

摘要

摘要: 针对航空发动机非线性分布式控制系统的故障诊断问题,首先提出了一种基于飞行包线划分的航空发动机非线性Takagi-Sugeno(T-S)建模方法,建立了具有网络诱导时延的航空发动机非线性分布式控制系统模型,然后将该系统视为离散切换系统,为其建立了具有时延补偿功能的故障观测器,给出了使得观测器误差系统渐近稳定的充分条件.故障检测仿真时间为20s,当第12s时,设定系统发生幅值为0.0025的阶跃型突变故障,仿真结果表明:12s之前,故障观测器保持渐近稳定,当第12s时,残差迅速增大并超过所设定阈值,从而检测到故障的发生.
- 时延 /
- T-S模糊模型 /
- 飞行包线 /
- 隶属度函数 /
- 故障检测
Abstract: The problem of fault detection for aero-engine no-liner distributed control system was studied.Firstly,a new non-linear modeling method for aero-engine based on Takagi-Sugeno(T-S) fuzzy model and flight envelop division was proposed,and the model of the distributed control system with network derivational time-delay was established by using this method.Secondly,if the distributed control system was regarded as a discrete switch system,a fault detection observer with time-delay compensation was designed,and the sufficient conditions of asymptotically stability for the observer-based residual system were presented.The total simulation took 20 seconds, a step fault with 0.0025 amplitude happened at the 12th second, the simulation results show that: the fault observer was asymptotic stable for preceding 12 seconds, and the residuals rapidly increased and exceeded the threshold value at the 12th second, thereby the fault would be detected.
- time-delay /
- T-S fuzzy model /
- flight envelop /
- membership function /
- fault detection

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