关键词: 国产化芯片；EPS；硬件架构；硬件安全机制

Abstract: The electric power steering (EPS) system is the core of the steering system in modern automobiles. Its safety and reliability directly affect driving experience and vehicle safety, so it has extremely high requirements for the performance and safety level of the controller chip, and this field has long been monopolized by foreign chips. With the rapid development of the domestic automotive chip industry, the localized application of EPS controller chips has become feasible. Based on software functions, this paper deeply analyzes the hardware requirements of the EPS controller, constructs the hardware architecture of the EPS controller accordingly, and carries out research on the selection of localized chips. In the research, it analyzes in detail the performance parameters and reliability of candidate localized chips, providing a solid basis for chip selection. At the same time, to meet the functional safety requirements of the EPS controller, it designs a complete hardware safety mechanism from four key dimensions: motor control unit (MCU) safety mechanism, pre-driver chip safety mechanism, communication safety mechanism and power supply safety mechanism, laying a solid technical foundation for the localized application of the EPS controller.

Key words: domestic chip; electric power steering; hardware architecture; hardware security mechanism