文档介绍：毕业设计( 论文) I 摘要 20世纪汽车产业高速发展,资源无节制消耗,污染物的过量排放,还有受油价上涨和环保意识等因素的影响,电动自行车已成为大部分人的选择。但是,电动自行车的动力性能由驱动系统决定且续驶里程(即能量供给)受限于蓄电池的存储电量,为提高动力性能和续航里程,须对电动自行车驱动电机的特性及能量回收控制策略进行分析研究。本文研究了电动自行车在制动过程中的能量回馈,设计了永磁无刷直流电动机在电动自行车制动过程中的能量再生反馈控制系统。从理论上分析了永磁无刷直流电动机利用位置传感器检测转子位置的方法,并对换相过程做较详细的介绍。本文首先系统的对电动自行车的运行状态进行了分析,分别对电动自行车的运行阻力、惯性力、再生制动力以及所需要的牵引力进行了计算。根据所需要的牵引力,在本设计中也对无刷直流电动机和电池进行了选型计算。再其次,本文对电动自行车的能量反馈控制方案进行了研究,内容包括轮毂电机的调速、电动车再生制动的控制。本文着重研究并设计了永磁无刷直流轮毂电机的能量的回收。关键词:电动自行车;动力性能;再生制动;电机控制; 永磁无刷直流轮毂电机图纸加 153893706 毕业设计( 论文) II 毕业设计( 论文) III Abstract Automobile industries have development of high speed in20 century. However, Dynamical performances of electric vehicle are decided by drive systems and extension of driving range(energy supply) restricts development, prevalence and is limit to electricity capacity of storage battery. In order to improve dynamical performances and extension of driving range, we must analyze and research traits of drive motor and control tactic of energy recycle in electric vehicle. In this paper, the electric bike in the braking energy in the process of feedback, the design of the permanent brushless DC motor in the electric bicycle brake renewable energy in the process of feedback control system. In theory analysis of the use of permanent brushless DC motor position rotor position sensor detection method, and for the process of doing a more detailed briefing. Firstly, the paper analyzes posing of in-wheel motor in detail. Secondly, Its subsystem of carried on analysis to the movement appearance of the dynamoelectric bicycle, to the movement resistance, inertial dint, braking force and need of led dint to carry ona calculation. According to need of lead dint, in this design also todo PMBLDCM and battery to carry on to choose a calculation. Thirdly, the paper presents research work on EB Energy feedback control strategy , which involves in-wheel motor PWM modulation, The regenerative braking of EB close-loop control. The dual polar driving method for permanent