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航空发动机是一个典型的强非线性系统。传统的PID控制通常是对发动机的设计点进行线性化,但这种方法仅能保证发动机在设计点有较好的控制性能,在其他状态的控制性能则较差。针对这个缺点,利用逆系统方法,建立发动机的逆模型,并基于此逆模型设计发动机的逆模型控制系统。仿真结果表明,逆模型控制系统具有较快的响应速度,同时精度符合控制要求。
Aero-engine is a typical strong nonlinear system. Traditional PID control usually linearizes the design point of the engine, but this method can only ensure that the engine has better control performance at the design point and poor control performance in other states. In response to this shortcoming, an inverse model of the engine is established by using the inverse system method, and an inverse model control system of the engine is designed based on the inverse model. The simulation results show that the inverse model control system has faster response speed and the accuracy accords with the control requirements.