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先进战机的研制过程中,缩比验证机的试飞是十分重要的环节,而缩比飞机通常选用微型涡喷发动机作为推进系统,因而对该系统进行数学建模成为必要。该文以微型涡喷发动机为对象,以发动机地面试验数据为基础,利用Wiener模型结合最小二乘方法建立了微型涡喷发动机的输入信号到发动机转速的模型、发动机转速到发动机推力的模型。对所建模型进行了验证,为进一步的微型涡喷发动机控制研究奠定了基础,为缩比验证机的控制方案制定提供了模型支持。
During the development of advanced fighter aircraft, the flight test of the reduced-ratio verification machine is a very important link, and the reduced-ratio aircraft usually adopts the micro-turbojet as the propulsion system. Therefore, it is necessary to model the system mathematically. In this paper, the micro-turbojet engine is taken as the object. Based on the engine ground test data, a model of the input signal to the engine speed, the engine speed to the engine thrust model of the micro-turbojet engine is established by using the Wiener model combined with the least square method. The model was validated, which laid the foundation for the further research on micro-turbojet control and provided the model support for the control scheme of the contractible prover.