摘  要：钢帘线是轮胎的重要组成部分，其质量直接影响着轮胎质量。TB6型钢帘线拉丝机控制系统，采用可编程序控制器（PLC）作主控制器，双变频器（VVVF）驱动实现恒张力控制。经实际使用，拉制的钢帘线直径均匀，收线端面平整，系统运行稳定，生产效率高。
关键词： PLC；变频器；拉丝机；控制系统；感应电机

Abstract: A speed control system of electric tourist car was introduced in this paper,which was based on space vector pulse width modulation(SVPWM).The theory of closed-loop slip frequency control and SVPWM were analyzed and simulated also.The control system was implemented by DSP,which used TI’s TMS320LF2407A as the control core,and SEMIKRON’s SKHI22 as the drive module.The results of simulation and experiment showed that,the system had good speed control performance and stability,as speed and loads change of the electric tourist car.