摘要详情
154 / 2021-04-28 16:52:37
Functional Safety Design for Torque Control of a Pure Electric Vehicle
Keywords—Functional Safety, FMEA, torque security control, electric vehicle
终稿
Functional safety plays an important role in future automobile development, especially for electrified vehicles. Torque security is the most important function in the context of automotive functional safety. Unintended torque increase/decrease due to hardware malfunction of the Vehicle Control Unit (VCU) is one of the major torque security problems that need to be addressed by appropriate software design. In order to ensure that the vehicle maintains in safe and reliable condition when running into an unintended torque increase, we firstly investigate elements of danger and risk through the Failure Modes and Effect Analysis (FMEA) approach, and then works out a strategy for torque security control in this paper. Using Matlab/Simulink/Stateflow toolset, requested torque calculation model is designed based on accelerator pedal position, vehicle velocity and gear position, while the torque monitoring model is designed based on speed, current and voltage of traction motor. By comparing the requested torque and the monitoring torque, the model gives a result whether the request torque exceeds the safety threshold. It also gives a reaction time limit when the requested torque is unsecure. The simulation results show that the developed torque-security control software fulfills the reaction time limit to meet the functional safety requirement of torque control.
重要日期
-
会议日期
07月10日
2021
至07月12日
2021
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05月10日 2021
初稿截稿日期
-
07月06日 2021
注册截止日期
主办单位
长沙理工大学
协办单位
IEEE Electron Devices Society
IEEE
IEEE
联系方式
- Dr. WanghuiZou
- zo******@csust.edu.cn
- 135********
历届会议
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2018年05月07日 台湾-中国
2018 7th International Symposium on Next Generation Electronics -
2017年05月23日 台湾-中国 Keelung
2017 6th International Symposium on Next Generation Electronics
