摘要
针对六自由度半车悬架结构特点提出了一种并行振动控制方法。在对簧载质量进行受力分析的基础上,推导得到前、后两个四分之一悬架间的耦合定量关系,建立分层模型,并以此为基础构建分层振动控制算法。中央控制层以悬架质心处的垂直、俯仰角加速度为控制目标,前、后两个四分之一悬架构成的底层分别结合鲁棒(H∝)和线性二次高斯型(LQG)控制策略并接受中央控制层的协调指令。MATLAB的仿真计算表明:与传统控制相比,控制量的计算时间大幅缩短,因而可以针对路面激励实施详尽的控制,达到改善汽车行驶平顺性的目的。
A parallel control method based on the structure characteristic of a half vehicle suspension with six degree freedoms was presented.Based on force analysis of the sprung mass,the coupling quantitative relation of the front and rear quarter suspensions was deduced and a hierarchical model was founded.Then a hierarchical vibration control algorithm was constructed.The vertical and pitch accelerations of the suspension center were treated as central control objects.The Hinfinite and Linear Quadric Gaussian（LQG） control strategy was respectively adopted by two local controls formed by the front and rear quarter suspensions and harmonized by central control.The simulation results under MATLAB environment showed that the computation time of control procedure is shortened compared with traditional model.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2010年第6期244-250,共7页
Journal of Sichuan University (Engineering Science Edition)
基金
福建省科技厅创新人才资助项目(2007F3090)
福建省教育厅科技资助项目(JA08239)
省高校服务海西建设重点工程资助项目(HX200804)
关键词
半车悬架
六自由度
分层建模
振动控制
仿真
half vehicle suspension
six degree freedoms
hierarchical model
vibration control
simulation
