1 玩具小车的设计 摘要 本设计课题研究的主题是将设计出一款拥有真实汽车一样的变速小车。 变速小车主 要包括动力系统,变速系统,控制转向系统,以及制动系统。本课题选用了直流电动 机,和机械变速控制的变速箱,在操作上与真车无异。 关键词 变速、转向、制动 Abstract This design topic research's subject is designs one section to have the real automobile same speed change car. The speed change car mainly includes the dynamic system, the speed change system, the control steering system, as well as braking system. This topi