汽车EPAS的混合灵敏度H_∞鲁棒控制器设计  

Mixed sensitivity H∞ robust controller designing for EPAS

作　　者：余为清[1] 刘举平[1] 刘爱博[1] 

机构地区：[1]华东交通大学载运工具与装备省部共建教育部重点实验室,南昌市330013

出　　处：《中国农机化学报》2013年第1期201-205,共5页Journal of Chinese Agricultural Mechanization

摘　　要：采用混合灵敏度H∞控制方法设计了汽车EPAS鲁棒控制器。针对回路的灵敏度函数和补灵敏度函数的性质,通过选择合适的加权函数获得了良好的闭环系统性能。利用线性二自由度车辆模型,采用混合灵敏度H∞控制器进行抑噪仿真。结果表明,混合灵敏度H∞控制器有效地遏制了转矩传感器的噪声与路面干扰,提高了EPAS系统的抗干扰性能,增强了EPAS系统的鲁棒稳定性,使EPAS系统获得了较好的转向跟随性。Absract: The mixed sensitivity H ∞ controller for EPAS robust is designed in this paper.To based on the nature of the sensitivity function and complement sensitivity functions,it selects suitable frequency weights can obtain a good close-loop system performance.In a linear two-degree freedom vehicle model,a simulation is given by using the mixed sensitivity H ∞ controller.The result shows that the d torque sensor noise and pavement interference are curbed effectively,by the controller the anti-jamming performance of EPAS system is improved,and the robust stability of is enhanced,so the steering following performance is obtained.

关 键 词：EPAS 混合灵敏度 H∞控制 鲁棒性 

分 类 号：U463.4[机械工程—车辆工程]