CVT夹紧力控制系统动态性能及其影响因素分析  

Analyses on the Dynamic Performance and Its Influencing Factors of CVT Clamp Force Control System

作　　者：罗勇[1] 孙冬野[2] 叶明[3] 叶心[1] 

机构地区：[1]重庆理工大学重庆汽车学院,重庆400054 [2]重庆大学,机械传动国家重点实验室,重庆400044 [3]重庆理工大学,汽车零部件制造与检测技术教育部重点实验室,重庆400054

出　　处：《汽车工程》2014年第9期1100-1105,共6页Automotive Engineering

基　　金：国家自然科学基金青年基金(51305475)、国家自然科学基金(51275549);重庆市基础与前沿研究计划项目(cstc2013jcyjA60004)资助

摘　　要：在对某型无级变速器夹紧力控制系统结构原理进行分析的基础上,采用键合图理论建立其数学模型,对该系统动态性能进行仿真。分析结构参数对系统阶跃响应时压力上升时间和超调量的影响,找出了对系统动态性能影响较大的结构参数,为系统动态性能的优化奠定基础。台架试验结果表明,所建立的夹紧力控制系统模型具有较高精度,仿真结果可信。Based on an analysis on the working principle of the clamp force control system of a continuously variable transmission,a mathematical model for the system is established by applying bond graph theory,with which the dynamic performance of the system is simulated. The effects of its structural parameters on the pressure rise time and overshoot of system responses are analyzed,and the structural parameters having more obvious influences on system performance are found out,laying a foundation for system performance optimization. The results of bench test show that the model built has higher accuracy and the results of simulation are credible.

关 键 词：汽车 无级变速器 夹紧力控制系统 动态特性 

分 类 号：U463.2[机械工程—车辆工程]