Characteristic analysis of hydraulic hybrid vehicle based on limit cycle

作     者：CHEN YanLi LIU ShunAn SHANG Tao ZHANG YuanKun 

作者机构：College of Mechanical Science and EngineeringJilin UniversityChangchun 130022China Faculty of EngineeringUniversity of WollongongWollongong NSW 2522Australia 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2012年第55卷第4期

页      面：1031-1036页

核心收录：

学科分类：07[理学] 082304[工学-载运工具运用工程] 08[工学] 070104[理学-应用数学] 080204[工学-车辆工程] 0802[工学-机械工程] 0701[理学-数学] 0823[工学-交通运输工程] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50475011) 

主　　题：automotive engineering hydraulic hybrid vehicle limit cycle global structure 

摘      要：The theory of limit cycles was applied to hydraulic hybrid vehicle (HHV) to analyze the dynamic characteristics of the system. The exact mathematical models based on configuration diagram of HHV were built to study on equilibrium points, nonexistence of limit cycle and stability of equilibrium points. The analysis showed that if the Young s modulus of fluid is neglected, the equilibrium points of the system will be distributed on both sides of the initial function. In addition, there is a unique equilibrium point according to the practical signification of the system parameters. The nonexistence analysis showed that there is no limit cycle for the system, no matter how the viscosity coefficient B changes. The stability analysis of equilibrium points showed that the system is asymptotically stable about the equilibrium point at B≥0 and the equilibrium point is the center point of the system at B=0. Finally, the phase diagrams of global topological structure of HHV system were entirely described according to qualitative analysis of the singular points at infinity.