EPS monitoring system

Abstract

The invention discloses an EPS monitoring system, and the system comprises: an ECU function module which is used for executing ECU functions, including but not limited to torque control and ECU assembly monitoring and verification, and only carries out the safety data interaction with a function monitoring module; a function monitoring module which performs fault monitoring and fault management on safety-related data and programs in the ECU function module according to an internal definition algorithm; and a controller monitoring module which performs fault management and fault monitoring on the ECU function module and the function monitoring module based on hardware. According to the invention, in the aspect of function safety, the ASIL-D level function safety requirement of the ISO6262 standard can be met, the product requirement of a steering system is met, the safety is enhanced, and the life and property damage caused by vehicle faults to people is also reduced. The highest requirements of the AUTOSAR specification and the E-GAS specification are met at the same time in the aspect of software architecture. Therefore, the safety requirement of the controller can be improved, and the risk caused by software failure of the steering system is reduced.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an EPS (electric power steering system) monitoring system. Background technique [0002] In the field of automotive controllers, there are more and more functions in the car, and the number of control units in the vehicle is increasing rapidly. The connection with functional safety is closer, and the safety risk of electronic failure in the car is also increasing. The development of electronic control systems is facing With more and more challenges. In the development process of the control unit ECU, the software part is relatively dependent on the hardware and system configuration, and the fine-tuning of the hardware may lead to software rewriting or a large number of modifications. [0003] AUTOSAR, the full name is Automotive Open System Architecture, which is the automotive open system architecture. It is a cooperative development framework for automotive electronic systems that ...

AI Technical Summary

Problems solved by technology

[0008] 2. The application layer (APPL) in the traditional software architecture does not contain fault management functions, which will cause the controller (ECU) to fail and it is very difficult to troubleshoot the fault

[0009] 3. In the prior art, the ECU components (monitoring modules of the torque angle sensor and the torque ring) are placed at the bottom of the software, and the monitoring mode is very simple, and the safety level cannot meet the ASIL-D level requirements

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