The main function of the traffic detection system is to examine the speed, the flow, the vehicle type and the lane occupancy of the motor vehicles. The method based on ARM embedded system in this paper provides a new means for the traffic detection s

电动汽车电能回馈系统,本文以研制应用于电动汽车的数字化永磁无刷直流电机低速能量回馈系统为工程背景展开。着重分析了当永磁无刷直流电机低于其空载额定转速时电磁制动和能量回馈的原理，介绍了一种低速能量回馈制动的简单控制方法。-Electric vehicle electric energy feedback system, this paper to research and application of digital electric vehicle permanent magnet brushl