| 基于LPV近空间飞行器的快速故障估计 |
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| 引用本文： | 赵静,姜斌,张柯.基于LPV近空间飞行器的快速故障估计[J].科技通报,2011,27(5):781-786. |
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| 作者姓名： | 赵静 姜斌 张柯 |
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| 作者单位： | 南京航空航天大学自动化学院,南京,210016 |
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| 基金项目： | 国家自然科学基金(90816023) |
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| 摘 要： | 针对临近空间飞行器的纵向飞行的非线性模型,首先利用线性变参数系统的思想对高超声速飞行器模型进行线性化；其次,考虑在执行器故障发生的情况下,基于LPV建立NSV线乘性故障模型,进而引入一种快速自适应故障估计的算法,并与传统的自适应估计算法相比较,最后仿真验证快速故障估计算法能够大大减少故障估计的时间和提高估计的精度.
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| 关 键 词： | 自适应故障估计 故障模型 线性变参数系统 近空间飞行器 非线性 |
Fast Adaptive Fault Estimation for Near Space Vehicles based on LPV System |
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| ZHAO Jing,JIANG Bin,ZHANG Ke.Fast Adaptive Fault Estimation for Near Space Vehicles based on LPV System[J].Bulletin of Science and Technology,2011,27(5):781-786. |
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| Authors: | ZHAO Jing JIANG Bin ZHANG Ke |
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| Institution: | ZHAO Jing,JIANG Bin~*,ZHANG Ke (College Of Automation Engineering,Nanjing University Of Aeronautics And Astronautics,Nanjing,210016,China) |
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| Abstract: | Firsdy,the longitudinal hypersonic flight vehicle nonlinear model is transformed into Linear Parameter-Varying (LPV) form based on Jacobian linearization method via a family of equilibrium points.Secondly,an LPV faulty model is established,and then the fast adaptive fault estimation(FAFE) algorithm is proposed,which can greatly both reduce the estimate time and improve estimate accuracy of fault.Finally,simulation results show effectiveness of fast adaptive fault estimation algorithm as actuator fault occur... |
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| Keywords: | adaptive fault estimate linear parameter varying system near space vehicles nonlinear |
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