齿形换挡带式制动器接合过程研究  

Study on engagement process of shifting band brake with gear

作　　者：马彪[1,2] 周如意 李和言 李亚熙[3] Ma Biao;Zhou Ruyi;Li Heyan;Li Yaxi(School of Mechanical and Vehicle Engineering,Beijing Institute of Technology,Beijing 100081,China;Collaborative Innovation Center of Vehicles in Beijing,Beijing 100081,China;Beijing Hyundai Motor Co.Ltd.,Beijing 101300,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京电动车辆协同创新中心,北京100081 [3]北京现代汽车有限公司,北京101300

出　　处：《华中科技大学学报（自然科学版）》2018年第9期88-93,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51575042)

摘　　要：为了研究制动器接合过程的转速、转矩特性,将接合过程分为消除间隙、齿顶滑摩、钢齿啮合和碰撞四个阶段,建立了接合过程动力学模型,分析了制动带的受力情况和制动鼓的转速变化,并运用Matlab进行制动器接合过程仿真,确定了成功接合所允许的制动鼓初始角速度的范围以及不同初始转速下的转矩冲击.研究表明：制动器成功接合初始角速度随电磁缸拉力增大而增大,随制动带径向刚度增大而减小.此外,台架试验验证了齿形换挡带式制动器转矩冲击模型,制动器在仅提供较小电磁拉力下能克服转矩冲击,实现制动.In order to study the characteristics of rotation speed and torque during the brake process,the engagement process was divided into four stages,including the gap elimination,the addendum sliding,the meshing and the collision.The dynamic model of the engagement process was established,and the force condition of brake band and the changing trend of the rotation speed of the brake drum were analyzed.The engagement process of the brake was simulated through Matlab,and the range of the initial joint angular velocity and the torque shock under different initial rotation speed were determined.Research shows that the initial joint angular velocity is in direct proportion to the electromagnetic force and in inverse proportion to the radial stiffness.Experiment result verifies the correctness of the model and proves that the brake can overcome the torsional shock and achieve braking with a small electromagnetic pull force.

关 键 词：车辆工程 制动器 动力学仿真 接合特性 转矩冲击 

分 类 号：TH132.4[机械工程—机械制造及自动化]