An Automotive Electronic Throttle Testing Equipment Based on STM32

Car ownership in China has risen sharply in recent years, and the impact of car for people´s daily life is becoming more and more larger, so car´s security is put forward with very important requirement. Automotive electronic throttle testing equipment based on STM32 Microprocessor is presented. Compared with the traditional microcontroller, STM32 is a high performance, low cost, low-power embedded microcontroller. Double H-bridge driving circuit and throttle fault diagnosis process are designed. Mechanical and electrical structure of automobile electronic throttle are analyzed on the basis of the motor drive circuit and PID control algorithm is designed, established the mathematical model of the electronic throttle and MATLAB simulation model, and the equipment cost was reduced, the accuracy of the testing equipment control system is improved. The experiments show that stability time and overshoot amount of design are less than the PID algorithm.