某型涡扇发动机的模型跟踪滑模控制

研究了模型跟踪滑模控制在涡扇发动机控制中的应用。首先提出了一种参考模型的状态反馈设计方法，该方法可保证所设计的参考模型在满足匹配条件的同时满足系统性能指标要求；而且若被控对象可解耦，还可保证参考模型动态解耦。其次提出了一种比例积分型切换超平面的极点配置设计方法。最后应用上述两种方法设计了某型涡扇发动机的模型跟踪滑模控制器，并进行了数字仿真，仿真结果表明，所设计的模型跟踪滑模控制系统无抖振现象，且具有很强的鲁棒性。

MODEL FOLLOWING SLIDING MODE CONTROL FOR A TURBOFAN ENGINE

This paper studies the application of model following sliding mode control (MFSMC) to a turbofan engine. Firstly, a method of state feedback is proposed for designing a reference model; so the reference model not only satisfies the matching conditions but also meets the performance specifications as well and moreover if the plant is decouplable, the reference model can be designed to be decoupled. Secondly, a method of pole assignment is put forward for designing switching surfaces of PI type. Finally, the MFSMC controller for a turbofan engine is designed using the above mentioned methods; dynamic simulation results show that the designed MFSMC system has no chattering phenomena and has strong robustness.