基于时滞轮胎反馈的车辆主动悬架振动控制研究  

Research on Vibration Control of Vehicle Active SuspensionBased on Time-delay Tire Feedback

作　　者：瞿育文 黄炯 曾志嵘 QU Yuwen;HUANG Jiong;ZENG Zhirong(Product Development Center of Jiangling Motors Co.,Ltd.,Nanchang 330000,China;Jiangxi Key Laboratory of Automobile Noise and Vibration,Nanchang 330000,China)

机构地区：[1]江铃汽车股份有限公司产品开发技术中心,江西南昌330000 [2]江西省汽车噪声与振动重点实验室,江西南昌330000

出　　处：《拖拉机与农用运输车》2021年第5期17-23,共7页Tractor & Farm Transporter

摘　　要：针对含时滞反馈控制的主动悬架的减振问题,建立二自由度系统的动力学方程,研究了轮胎位移和速度反馈对车身悬架系统振动性能的影响。建立以车身加速度和轮胎动载的统一目标函数作为优化目标函数,采用粒子群算法(PSO)对时滞控制参数进行优化,获得主动悬架系统最优时滞控制参数,采用稳定性切换方法分析轮胎位移反馈和速度反馈的主动悬架系统时滞控制的稳定性。研究表明,路面激励为车身共振频率下,轮胎位移反馈控制主动悬架的车身加速度和轮胎相对动载明显优于时滞速度反馈控制的主动悬架,减小程度分别为92.7%和99.8%,减小轮胎对路面的相对动载,确保了车辆行驶的安全性;与被动悬架相比,悬架动挠度降低了37.6%,车辆行驶舒适性得到进一步提高。Delayed feedback control is applied to vehicle active suspension,whose two-degree dynamical model is built,and the delayed displacement and velocity feedback control performance that have effect on the body and suspension vibration suppression is discussed.The optimum unified object function based on the body acceleration and tire dynamic load is established,which gain the optimum delayed control parameters by using Particle Swarm Optimization(PSO).Stability Switch Method is developed to analysis active suspension stability of the delayed displacement and velocity feedback control suspension system.The result shows that the vibration suppression performance of delayed displacement feedback control,whose reduction of body acceleration and tire dynamic load are to 92.7%and 99.8%respectively,is better than the delayed velocity feedback control and the vehicle ride safety is guaranteed.Compared with passive suspension,the suspension deflection is decreased to 37.6%,so the vehicle ride comfort is improved.

关 键 词：时滞反馈控制 稳定性切换 统一目标函数法 粒子群算法(PSO) 

分 类 号：U461.1[机械工程—车辆工程]