This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Functional Safety and Secure CAN in Motor Control System Design for Electric Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Permanent magnet synchronous motors (PMSM) are widely used in the electric vehicles for their high power density and high energy efficiency. And the motor control system for electric vehicles is one of the most critical safety related systems in electric vehicles, because potential failures of this system can lead to serious harm to humans’ body, so normally a high automotive safety integrity level (ASIL) will be assigned to this system. In this paper, an ASIL-C motor control system based on a multicore microcontroller is presented. At the same time, due to the increasing number of connectivity on the vehicle, secure onboard communication conformed to the AUTOSAR standard is also implemented in the system to prevent external attacks.
In this paper, the functional safety development process of the motor control system is presented: in the item definition stage, the system is defined according to its functionalities and interaction with the environment and other items, and then the hazard analysis and risk assessment of the system is carried out to derive the safety goals and to assign the automotive safety integrity levels. For system architecture design, a proposed structure based on the E-GAS 3-layer monitor concept is proposed and functional safety requirements are assigned. The system is implemented with a multicore architecture microcontroller. For torque monitoring, a torque estimation algorithm for PMSMs is also presented. And considering the security threats to the vehicles, secure onboard communication usage is also described in the paper to provide a mechanism to authenticate and verify the CAN messages between the vehicle control unit and the motor control system.
|Technical Paper||Functional Safety in Inverter Hardware|
|Technical Paper||Pole-Phase Modulation Motor Drives to Extend Torque-Speed Capability for xEV Applications|
|Technical Paper||DC-Link Capacitor Sizing Considerations for HEV/EV e-Drive Systems|
CitationWu, Z., lu, K., Zhu, Y., Lei, X. et al., "Functional Safety and Secure CAN in Motor Control System Design for Electric Vehicles," SAE Technical Paper 2017-01-1255, 2017, https://doi.org/10.4271/2017-01-1255.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- ISO 26262:2011, “Road vehicles - Functional safety,” International Organization for Standardization, first edition, 2011
- Koscher K. ., “Experimental security analysis of a modern automobile,” in Proc”. IEEE Security Privacy Symp., Oakland, CA, USA, 2010, pp. 447–462
- Woo Samuel , “A Practical Security Architecture for In-Vehicle CAN-FD,” IEEE Transactions on Intelligent Transportation Systems, Volume: 17, Issue: 8, Aug. 2016, pp. 2248 – 2261
- Li, S., Chang, C., and Zhao, H., "Functional Safety Development of E-motor Drive System for PHEV," SAE Technical Paper 2015-01-0261, 2015, doi:10.4271/2015-01-0261
- Batchu, S., "Functional Safety in Inverter Hardware," SAE Technical Paper 2016-28-0166, 2016, doi:10.4271/2016-28-0166
- Christiaens, S., Ogrzewalla, J., and Pischinger, S., "Functional Safety for Hybrid and Electric Vehicles," SAE Technical Paper 2012-01-0032, 2012, doi:10.4271/2012-01-0032
- Standard, “Standardized E-Gas monitoring concept,” version 4.0, E-Gas work group, 2007
- Requirements on Module Secure Onboard Communication, AUTOSAR_SRS_SecureOnboardCommunication.pdf
- British Standard BS, “IEC61882:2002 Hazard and operability studies (HAZOP studies)”.
- Zhihong Wu, Ke Lu, and Yuan Zhu, "A Practical Torque Estimation Method for Interior Permanent Magnet Synchronous Machine in Electric Vehicles," PLoS One. 2015; 10(6): e0130923., doi:10.1371/journal.pone.0130923
- Handschuh H. and Preneel B., “Minding your MAC Algorithms,” Information Security Bulletin, Volume: 9, Number: 6, 2004, pp. 213–221
- Dworkin M., “Recommendation for block cipher modes of operation: the CCM mode for authentication and confidentiality,” NIST Special Publication 800-38C, May 2004
- Federal Information Processing Std. (FIPS) 197, “Advanced Encryption Standard (AES),” NIST, U.S. Dept. Commerce,Washington, DC, Nov. 26, 2001