多目标遗传算法在H_∞鲁棒控制器设计中的应用

Multi-objective genetic algorithm applied inrobust H_∞ controller design

关键词:  航空发动机  多目标遗传算法  控制器  控制系统  数值仿真

Key words:  Aircraft engine  Multi-objective genetic algorithm+  Controller  Control system  Numerical simulation

摘要:

引入了基于频域理论的H∞回路成形鲁棒设计方法对某型航空发动机进行控制器设计,对设计过程中的关键技术进行了研究。在控制器设计过程中,引入多目标遗传算法对能使系统奇异值形状满足设计要求的权函数参数进行全局寻优,有效提高了控制器的设计效率和设计的准确性。同时对传统的控制回路结构进行了改形,改善了控制器性能。最后在设计的航空发动机数控系统快速原型化实时仿真平台上进行了硬件在回路仿真,证实了所设计的改型后的H∞回路成形控制器在航空发动机控制上所具有的良好的性能。

Abstract:

As the frequency domain approach,H∞ loop-shaping design procedure was applied to aero-engine control system and several key technologies in design process were studied.Multi-objective genetic algorithm was used to obtain the global optimum loop-shaping weights effectively which ensures the desired shape of the system singular values.Meanwhile,the transfigured controller loop was presented to improve the control qualities.The hardware in-the-loop simulation based on the real-time simulation platform was carried out,and the results verified that the H∞ robust controller is the proper method used for aero-engine controller.