机电控制CVT夹紧力可变机构性能分析  

Performance Analysis of Variable Clamping Force Actuator of EMCVT

作　　者：叶明[1] 李鑫[1] 罗勇[1] 

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054

出　　处：《中国机械工程》2015年第3期398-402,413,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51275549);重庆市科委自然科学基金资助项目(cstc2012jjA60003);重庆市教委科学技术研究资助项目(KJ120830)

摘　　要：机电控制CVT采用直流电机作为调速驱动机构,比传统的电控液动CVT具有更高的效率、更好的控制性能和更少的零件数目。针对目前机电控制CVT夹紧力不可调的缺点,提出一种CVT夹紧力调整的机构,并建立了数学模型。在此基础上设计了基于模糊控制和比例积分控制的位置与速度双闭环控制算法,并进行了夹紧力调整控制仿真。结果表明,所提出的夹紧力调整机构和控制策略具有较好的控制性能,满足系统运行过程中夹紧力变化的需要。EMCVT was driven by direct current motor. It was more efficient, had less parts and better control performance than that driven by electric-hydraulic system. So far the clamping force of EMCVT could not be varied with input torque. A new type of actuator where the control clamping force was put forward. Mathematical model of clamping force control actuator was built and a dual closed loop controller with fuzzy logic control and PI control was designed. Simulation results show that control performance of clamping force actuator and control strategies are good and meet the requirements of clamping force while system running.

关 键 词：机电控制CVT 可变夹紧力 控制 仿真 

分 类 号：U463.2[机械工程—车辆工程]