噪声与振动控制2018，Vol.38Issue(2)：1-5,17,6.DOI:10.3969/j.issn.1006-1355.2018.02.001
减速带及发动机联合激励下车辆混沌识别与智能抑制
Identification and Intelligent Suppression of Vehicle Chaos under Speed Bump and Engine Combined Excitation
摘要
Abstract
The possible chaos under speed bump and engine combined excitation when the vehicle passing through the speed bump is studied.The 5-DOF model of the vehicle is established with the speed bump and engine combined excitation considered.The Poincaré section and the maximum Lyapunov exponent of vehicle system are used to identify the vehicle chaos. The particle swarm optimization (PSO) is used to search the best feedback gain, which is utilized to suppress the vehicle chaos.The results indicate that the vehicle is in chaos state in all speed range. Under low and medium speed, the route to chaos of the vehicle is the system coupling vibration under multi-frequency excitation. While in the high speed condition,the vehicle approaches the chaos through the bifurcation.Chaos of the vehicle can be effectively suppressed by feedback control with the best feedback gain searched by PSO. The chaos characteristics of the vehicles with nonlinear suspension have been revealed and a new thought of chaos intelligent suppression has been provided.关键词
振动与波/非线性悬架/混沌/Lyapunov指数/反馈控制/粒子群算法Key words
vibration and wave/nonlinear suspension/chaos/Lyapunov exponent/feedback control/PSO分类
交通工程引用本文复制引用
胡启国,韩奥,王宇谦..减速带及发动机联合激励下车辆混沌识别与智能抑制[J].噪声与振动控制,2018,38(2):1-5,17,6.基金项目
国家自然科学基金资助项目(51375519) （51375519）
重庆市基础科学与前沿技术研究专项重点资助项目(Cstc2015jcyBX0133) （Cstc2015jcyBX0133）
