随着社会环保意识的加强及现代科技的发展,一种称之为“绿色交通工具”的电动自行车,越来越受人们的关注和青睐。电动自行车的普及和发展无疑给人们提供了一种安全舒适、无噪音无污染、轻巧快捷的交通工具。目前普遍应用的电动自行车电机有二种,一是永磁有刷直流电机,一种 With the strengthening of social awareness of environmental protection and the development of modern science and technology, an electric bike called “green transport” is attracting more and more attention and favor. The popularity and development of electric bicycles will undoubtedly provide people with a safe and comfortable, no noise, pollution-free, lightweight and efficient transport. Currently there are two types of electric bicycle motor commonly used, one permanent magnet brush DC motor, a