轮毂电机嵌入式电磁驻车制动设计与仿真

根据电磁理论和电磁制动器的工作原理,设计了一种能耗低、嵌入式轮毂电机内部的电磁断电制动新型结构,并且提出了分析计算方法。对电磁制动器进行了磁路分析,建立了数学模型。通过Ansoft软件建立了三维有限元模型,对电磁制动器的电磁性能和工作特性进行分析,并对电磁制动器工作过程进行动态仿真研究。分析了电磁制动器内部复杂的磁场强度分布和电密分布等,得到了激励绕组电流、电磁力与工作气隙以及衔铁位移等变化曲线。电磁吸力的实验结果与仿真计算结果一致,表明电磁有限元方法分析电磁制动器的电磁性能是准确可靠的,能满足电动代步车驻车制动系统的灵敏性、可靠性和特殊要求。

Design and simulation of electromagnetic parking brake embedded in wheel motor

Based on the electromagnetic theory and the work principle of electromagnetic parking brake,a new structure power breaker electromagnetic brake is designed,which is low energy consumption and embedded in in-wheel motor,and a kind of analysis computation method is proposed.Through the analysis of magnetic circuit of electromagnetic brake,the mathematical model is established.A three-dimensional finite element model is established via Ansoft software with the purpose of analyzing the electromagnetic property and work performance of electromagnetic brake,as well as simulating the dynamic work process of electromagnetic brake.By profoundly investigating the intricate internal magnetic field strength and power density distribution of the electromagnetic brake,the current research has obtained the exciting coil with time curve,electromagnetic force with work air gap curve and the armature displacement with time curve,etc.The conformity of the final simulation results with the experimental data indicates that the electromagnetic finite element method is accurate and reliable to analyze the electromagnetic property of electromagnetic brake,which can meet the requirements of sensitivity,reliability and specialization in electric scooter parking brake system.