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Stability analysis of aperiodic messages scheduled in the dynamic segment of flex ray protocol

Kumar, Sunil PR and Jenkins, Lawrence (2012) Stability analysis of aperiodic messages scheduled in the dynamic segment of flex ray protocol. In: 2012 Third International Conference on Computing Communication & Networking Technologies (ICCCNT), 26-28 July 2012, Coimbatore.

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Official URL: http://dx.doi.org/10.1109/ICCCNT.2012.6395866

Abstract

In a cyber physical system like vehicles number of signals to be communicated in a network system has an increasing trend. More and more mechanical and hydraulic parts are replaced by electronic control units and infotainment and multimedia applications has increased in vehicles. Safety critical hard real time messages and aperiodic messages communicated between electronic control units have been increased in recent times. Flexray is a high bandwidth protocol consisting of static segment for supporting hard real time messages and a dynamic segment for transmitting soft and non real time messages. In this paper, a method to obtain the stability region for the random arrival of messages in each electronic control units which is scheduled in the dynamic segment of Flexray protocol is presented. Number of mini slots available in the dynamic segment of Flexray restricts the arrival rate of tasks to the micro controllers or the number of micro controllers connected to the Flexray bus. Stability region of mathematical model of the system is compared with the Flexray protocol simulation results.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Depositing User: Francis Jayakanth
Date Deposited: 10 Aug 2013 05:51
Last Modified: 10 Aug 2013 05:51
URI: http://eprints.iisc.ac.in/id/eprint/47022

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