Abstract:

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 conditioning,
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.