The Research of Response Time and Scheduling Algorithm in the TTCAN Bus Control Networks

Abstract:

By analyzing the priority arbitration bit by bit without destroy in can bus rule, the article elicits the conclusion that if static priority based on the affirmatory system model is used, the lower priority’s messages will be much more delayed, even lose some data when the bus’s bandwidth is widely used and scheduling can’t be modified during the system. The dynamic priority promoting method and math model of SQSA and SQMA is achieved in the article, it analyses the model’s rate of taking in and sending out in large quantities, the largest delay, the problems and solutions when using SQMA. In the end, It is validated that the method of improved dynamic in the article has good performances on the network rate of taking in and sending out in large quantities, the average delay and the rate of network usage by emulational experiments.

• Periodical: Applied Mechanics and Materials (Volume 678)
• Pages: 461-467
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.678.461
• Online since: October 2014
• Authors: Li Ming Wang, Xiao Ling Yan*
• Keywords: Cost Function, Event Triggered, Mathematics Expectation, Scheduling Algorithm, Time Triggered, TTCAN

References

[1] Li Jia, Zhu Yuan, Response time analysis for CAN and TTCAN [J], JT singhua Univ (Sci &Tech), 2006, Vol 46, No. 2.

[2] J eon J M , Kim D W, Kim H S, An analysis of network-based control system using CAN (Controller Area Network) protocol [A ]. Proceeding of the 2001 IEEE International Conference on Robotics & Automation [C]. Seoul, Korea: IEEE Press, 2001. 3577-3581.

DOI: 10.1109/robot.2001.933172

[3] Tindell K, Burns A , Wellings A J. Calculating controller area netwo rk (CAN)message response times [J ]. Control Engineering Practice, 1995, 3 (8) : 1163-1169.

DOI: 10.1016/0967-0661(95)00112-8

[4] G. Leen, D. Heffernan Timer-triggered controller area network, Computing & Control Engineering Journal , (2001).