一种叶轮式MRF汽车制动器结构设计与性能仿真  

Structure Design and Performance Simulation for a Van Wheel Type Vehicle MRF Brake

作　　者：丁柏群[1] 宋宇[1] 

机构地区：[1]东北林业大学

出　　处：《汽车技术》2011年第8期34-38,共5页Automobile Technology

摘　　要：设计了一种汽车轮内叶轮式磁流变液制动器,推导出该制动器的制动力矩计算方法,并在Matlab/Simulink环境下建立仿真模型,分析了制动器结构参数对制动力矩的影响。结果表明,叶轮式磁流变液制动器工作模式为剪切与流动的混合模式,其制动力矩与磁感应强度呈现对数变化规律,与工作间隙呈现负指数变化规律;叶片的径向尺寸、叶片数量和叶片厚度对制动力矩都有较大影响。所设计的汽车磁流变液制动器能够满足一般小型汽车的制动力矩需求。A van wheel type vehicle magneto-rheological fluid（MRF） wheel brake was designed,and its braking torque formula was deduced,and the simulation model was built based on Matlab/Simulink to analyze the influences of brake structural parameters on braking torque.The results show that the working mode of the van wheel type MRF brake mix up shear with flow patterns,and the relationship between its braking torque and magnetic induction presents a logarithmic change rule,while the corresponding relation with the working clearance presents a negative exponential law.The radial dimensions,number and thickness of blades have considerable influence on braking torque respectively.And the braking torque of the designed vehicle MRF brake can satisfy the requirement of small-sized vehicles.

关 键 词：制动器 磁流变液 结构设计 性能仿真 

分 类 号：U463.5[机械工程—车辆工程]