摘要
提出了一种在带式无级变速器(Continuously variable transmission,CVT)中应用双电机分别调节主、从动轮半径以实现速比变化的全电无级调速方案。为了给CVT及其执行机构的设计及执行电机的选型和控制提供理论依据,建立了CVT的力学模型并对CVT传动过程中的受力进行了分析。通过对所建力学模型的仿真计算得到了主、从动带轮动盘轴向力与传递转矩的关系以及两者随速比变化的规律,并据此提出了在执行机构设计中加装预紧助力弹簧以减小伺服电机功率及体积的设计思想。通过对全电调节CVT原理样机的试验测试,验证了全电调节方案的可行性和所建力学模型及求解方法的正确性。
The electromechanical pulley actuation system by using dual motor adjusting radius to realize the speed ratio variable in a belt Continuously Variable Transmission（CVT） is presented.The force working on CVT is analyzed and the force model is established which building up theory foundation for the CVT design,the choice and control of actuation motors used for speed ratio shifting.The relationship between the pulley axial force and the torque transmitted by CVT under different speed ratios is obtained by simulation and calculation to the force model,and assistant spring is designed and added to pulley actuation system to minish motor power and size based on the simulation results.Finally,the feasibility of the scheme,the force model and the correctness of calculation method are verified by CVT prototype test.
出处
《机械传动》
CSCD
北大核心
2010年第10期62-65,共4页
Journal of Mechanical Transmission
基金
江苏省教育厅自然科学基金项目(09KJD580002)
江苏技术师范学院博士启动基金
关键词
CVT
力学分析
全电调节
CVT Mechanics analysis Electromechanical pulley actuation
