纯电动汽车牵引力控制系统(TCS)的研究与开发

R & D of a traction control system(TCS) for electric vehicles

提出了一种用于纯电动汽车的牵引力系统(TCS)控制器。依据驱动防滑的控制要求,针对未开源电机,设计了TCS的软件。选择Freescale S12系列单片机(MCU)作为主控芯片。设计了单片机主电路﹑电源﹑信号调理﹑加速踏板信号及CAN(控制器局域网)总线信号采集﹑输出等硬件。根据纯电动汽车运行工况,将TCS分为起步﹑正常﹑制动﹑故障监测等4个模块,制定了控制策略。并针对4个模块,完成了功能验证性试验。结果表明:本TCS控制器工作正常,能有效地将滑转率限制在10%左右,保证了车辆安全,实现了驱动防滑的控制要求。

A traction control system （TCS） controller was designed for a pure electric vehicle with an unopened source motor using its software to meet anti-slip function requirements by selecting a MC9S12XS128 microcontroller （MCU）. The hardware circuits were designed for main system, power system, signal conditioningl accelerator pedal signal collection, CAN （controller area network） bus collection, and the output system. The TCS had four modules for starting, running, braking, and fault monitoring. TCS control strategies were developed for different operating conditions. The function verification test was completed for the four modules. The results show that the TCS controller works well, and can limit the slip trend at about 10% effectively. Therefore, the controller can ensure vehicle safety and meet the anti-slip control requirements.