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研究了航空发动机的多变量鲁棒控制 ,提出了低阶设计对象模型的构造方法。该模型是通过对被控对象的发动机执行机构进行特定输出反馈而得到的 ,它与被控对象模型阶次相同 ,明显低于目前常用的增广设计方法设计对象模型的阶次。基于低阶设计对象模型 ,作者以前研究的 ZP/ LTR设计方法转化为低阶 ZP/ LTR设计方法 ,应用该方法使设计控制器的阶次明显降低 ,从而更易实现。通过对某型涡扇发动机的仿真研究验证了低阶ZP/ LTR设计方法的有效性。
The multivariable robust control of aeroengine is studied and a method of constructing a low-order design object model is proposed. The model is obtained through the specific output feedback of the engine actuator of the controlled object, which has the same order of the controlled object model and is obviously lower than the order of the design object model of the commonly used augmented design method. Based on the low-level design object model, the ZP / LTR design method previously studied by the author is transformed into a low-order ZP / LTR design method. By using this method, the order of the design controller can be significantly reduced and thus easier to implement. Simulation results of a turbofan engine verify the effectiveness of the low-order ZP / LTR design method.