Setting and Monitoring System for Motors on Rear Axle using Android Automotive Operating System

Electric vehicle consist of various parts, one of which is powertrain. Powertrain consist of many components one of which is motor and the motor itself needs monitoring to prevent problems. In this research, In-Vehicle Infotainment (IVI) system is used to monitor and set driving mode on motor. This research utilizes Android Automotive OS for developing IVI and develop an application based on Android Automotive OS to monitor motor RPM and set driving modes. In addition, in this research also used differential drive on the Differential Control Unit (DCU) to simulate the rear axle. The system employs an STM32F407 as the DCU and a Raspberry Pi as the Centralized Control Unit (CCU), using Control Area Network (CAN) communication. Test results demonstrated that the developed application successfully displays RPM values calculated by the DCU and sets the driving mode on the motorbike. The Ackermann implementation was tested, confirming differential motor speeds during turns. Driving mode effects on motor response were evaluated, showing that sport mode had a more aggressive response compared to normal and eco modes, and driving mode influenced the motor's maximum current usage. Additionally, the research measured the processing times for each step: the response from the PXN devices to the motor, data transmission to Android Automotive OS (AAOS) and its display in the app, and transmitting driving mode data to the DCU. The results confirmed efficient communication and processing across all components.