| 摘要: |
| 研究了利用平衡流形模型建立航空发动机线性模型的方法。详细讨论了平衡流形模型的构造过程,给出从对象的平衡流形模型获取线性模型的理论依据。比较了线性化模型和平衡流形模型的有效范围,分析了两步法建立平衡流形模型允许采用更大的扰动量的原因。通过仿真验证了利用较大的扰动信号辨识平衡流形模型,进而获取线性模型的有效性。 |
| 关键词: 航空发动机 非线性系统 线性模型 平衡流形 建模 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金(50606008)。 |
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| Linear modeling of aero engines based on equilibrium manifold model |
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ZHAO Hui1, NIU Jun2, JIANG Yun-feng2, YU Da-ren1
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1.School of Energy Science and Engineering, Harbin Inst. of Technology, Harbin 150001, China;2.The 31st Research Inst. of CASIC,Beijing 100074, China
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| Abstract: |
| Linear modeling of aero engines based on equilibrium manifold expansion (EME) model is investigated. Construction process of the EME model is discussed, and theoretical basis of obtaining linear models of a nonlinear plant from its EME model is given. The valid area of linear model and EME expansion model is compared, indicting that a larger perturbation signal could be used to identify the EME model. The simulation results show that this linear modeling method is effective. |
| Key words: Aero engine Nonlinear system Linear model Equilibrium manifold Modeling |
