首页 | 本学科首页   官方微博 | 高级检索  
     

应用轴距预描的主动悬架最优控制器设计
引用本文:桑建学,戴斌.应用轴距预描的主动悬架最优控制器设计[J].计算机仿真,2006,23(9):246-248,276.
作者姓名:桑建学  戴斌
作者单位:国防科技大学机电工程与自动化学院,湖南,长沙,410073
摘    要:设计主动悬架的关键任务之一是寻找一个好的控制律,随机线性最优控制理论能为车辆提供良好的性能,得到了广泛的应用。轴距预描控制利用前轮处的路面信息作为预描变量对后轮进行控制,能充分发挥主动悬架的潜力。该文以悬架理论为基础,应用最优控制理论进行了结合轴距预瞄信息的主动悬架最优控制器的设计,并用一个卡尔曼滤波器估计系统状态。最后在MATLAB环境中建模和仿真,将有、无预描主动悬架系统的车身加速度、悬架动行程及车轮动位移3项指标进行了对比。仿真结果表明,采用轴距预描控制在低速情况下能较大改善后悬架系统的性能.验证了轴距预描控制的可行性。

关 键 词:主动悬架  最优控制  轴距预描控制  卡尔曼滤波
文章编号:1006-9348(2006)09-0246-03
收稿时间:2005-05-31
修稿时间:2005-05-31

Design of Optimal Controller of Active Suspension Using Wheelbase Preview Information
SANG Jian-xue,DAI Bin.Design of Optimal Controller of Active Suspension Using Wheelbase Preview Information[J].Computer Simulation,2006,23(9):246-248,276.
Authors:SANG Jian-xue  DAI Bin
Affiliation:School of Mechanics and Automation, National University of Defense Teehnology,Changsha Hunan 410073, China
Abstract:One of the key points in designing an active suspension is to find a good control rule.The theory of stochastic linear optimal control which is broadly used now can provide good performances for vehicles.Wheelbase preview control which uses road information at the front wheels as preview variables to control the back wheels can exert the potential of active suspensions adequately.This paper presents the establishment of an optimal controller of active suspension with wheelbase preview information using optimal control theory.A Kalman filter is used to estimate the states of the system.Then a simulation model based on MATLAB environment is established and used to compare 3 performance indexes of active suspensions:vehicle body acceleration,suspension dynamic travel and tire dynamic deflection.The simulation results demonstrate that wheelbase preview control is feasible and could improve the performance of the back suspension system effectively when the velocity is low.
Keywords:Active suspension  Optimal control  Wheelbase preview control  Kalman filter
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号