| 涡扇发动机早期退化性能的线性变参数估计 |
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| 引用本文： | 韩小宝,王仲生.涡扇发动机早期退化性能的线性变参数估计[J].航空动力学报,2009,24(1):98-103. |
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| 作者姓名： | 韩小宝 王仲生 |
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| 作者单位： | 西北工业大学航空学院, 西安 710072 |
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| 摘 要： | 针对涡扇发动机线性变参数(Linear parameter varying,LPV)模型,给出了一种新的早期退化航空发动机部件性能LPV滤波器设计方法.该方法采用仿射依赖于参数的二次Lyapunov函数,在仿射二次稳定性的基础上,引入多凸性引理将滤波器求解问题转化为线性矩阵不等式(Linear matrix inequalities,LMI)约束下的凸优化问题,避免了求解参数化线性矩阵不等式(Parameterized linear matrix inequalities,PLMI)约束下的优化问题.针对某型早期退化涡扇发动机的仿真表明,该方法能以较高精度估计性能退化参数,且鲁棒性强,增益调度简单,具有一定的工程意义.
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| 关 键 词： | 航空发动机 线性变参数滤波 参数依赖的Lyapunov函数 仿射二次稳定 参数化线性矩阵不等式 |
| 收稿时间： | 2008/5/15 0:00:00 |
| 修稿时间： | 11/6/2008 9:50:53 PM |
Linear parameter varying estimation for early deteriorated turbo fan engine performance parameter |
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| HAN Xiao-bao and WANG Zhong-sheng.Linear parameter varying estimation for early deteriorated turbo fan engine performance parameter[J].Journal of Aerospace Power,2009,24(1):98-103. |
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| Authors: | HAN Xiao-bao and WANG Zhong-sheng |
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| Affiliation: | School of Aeronautics Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | To estimate the component performance parameters of early deteriorated areoengine,a linear parameter varying(LPV)filter was given for LPV model of a turbofan engine.Based on conceptions of affined parameter-dependent quadratic Lyapunov function and affined quadratic stability,the filter design method was converted into a normal linear matrix inequalities(LMI)constrained convex optimization by introducing the lemma of multiconvexity.Also the difficulties in solving the optimization problem with parameterized... |
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| Keywords: | aeroengine linear parameter varying filtering parameter-dependent Lyapunov function affine quadratic stability parameterized linear matrix inequalities |
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