基于干扰抑制的汽车转向与悬架系统的集成控制  

INTEGRATED CONTROL OF AUTOMOBILE STEERING AND SUSPENSION SYSTEM BASED ON DISTURBANCE SUPPRESSION

作　　者：陈无畏[1] 孙启启[2] 胡延平[1] 朱茂飞[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]广州电器科学研究院,广州510300

出　　处：《机械工程学报》2007年第11期98-104,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50275045;50575064)。

摘　　要：建立侧向风作用下的汽车整车横向和垂向非线性动力学模型。考虑到随机路面输入和侧向风干扰,利用L_2增益干扰抑制的方法设计出电动助力转向(EPS)与主动悬架系统(ASS)的非线性输出反馈H_∞控制器。在Matlab环境下对驾驶员—汽车—道路闭环系统进行仿真计算。结果表明,所设计的控制器能有效抑制路面随机输入和较大的侧向风干扰,改善车辆的操纵稳定性、转向轻便性和行驶平顺性。A vehicle nonlinear lateral and vertical dynamics model is built under crosswind disturbance. With the L2-gain method of disturbance suppression, the nonlinear H∞ output feedback controller is designed for electrical power steering （EPS） and active suspension system （ASS） with considerations of random road input and strong crosswind disturbance. Simulations for driver-vehicle-road closed-loop system are carried out by using Matlab software. The results show that the designed controller can suppress the disturbances effectively and improve handling stability, handiness and ride characteristics of a vehicle.

关 键 词：汽车 干扰抑制 非线性 L2增益 集成控制 

分 类 号：O441[理学—电磁学]