基于修改加速控制规律的航空发动机寿命延长控制  

Life extending control of aircraft engine based on adjusting acceleration schedule

作　　者：陈小磊[1] 郭迎清[1] 陆军[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《航空动力学报》2011年第9期2116-2121,共6页Journal of Aerospace Power

摘　　要：针对发动机加速过程,以涡轮导向叶片热机械疲劳寿命为例,通过在原加速控制规律后半段增加转子加速度限制,综合考虑加速性能与寿命延长指标,利用遗传算法对加速规律进行优化.仿真结果表明修改后的加速控制规律能够明显地延长涡轮导向叶片的寿命,而发动机加速过程上升时间基本保持不变.The acceleration schedule of engine which influenced the thermo-mechanical fatigue（TMF） of turbine stator blade was analyzed.Through additional acceleration limit to the original control schedule,the acceleration schedule was optimized by genetic algorithm,in consideration of the acceleration performance and life of blade.The simulation results show that the improved acceleration schedule can provide significant life extension of blade while keeping the rise time unchanged during the acceleration process.

关 键 词：寿命延长控制 加速控制规律 热机械疲劳模型 遗传算法 航空发动机寿命 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]