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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。
The method of establishing aeroengine linear model by using balanced manifold model is studied. The construction process of the balanced manifold model is discussed in detail, and the theoretical basis for obtaining the linear model from the balanced manifold model of the object is given. The effective range of the linearized model and the balanced manifold model are compared, and the reason why the two-step method is used to establish a balanced manifold model to allow greater disturbance quantities is analyzed. Simulation shows that using a large perturbation signal to identify the balanced manifold model and then obtaining the validity of the linear model.