航空发动机多路模糊切换控制系统设计

摘要

针对航空发动机在不同控制通路切换过程中出现的转速等参数发生大幅度跳变以及系统不稳定的问题,提出了一种模糊切换控制方法,设计了基于不同结构控制通路的模糊切换控制器,基于无源性概念对航空发动机多路模糊切换控制系统进行了稳定性分析,得到了多路模糊切换控制系统稳定的充分条件.航空发动机模糊切换系统与直接切换系统仿真结果表明了航空发动机多路模糊切换控制方法的有效性.%Considering the significant jump of working parameters such as speed and the unstable problem of the system during the shift of different control loops on aircraft engine, the method for fuzzy switching control scheme is proposed. The fuzzy switching controller for different structures of control loops is designed. The stability of the multi-loop switching control system for aircraft engines is analyzed based on the passivity theorem. Sufficient stability condition of multi-loop switching system is obtained. Compared with the direct switching system, simulation of the proposed fuzzy switching system shows the effectiveness to the multi-loop switch control method for aircraft engines.