A Distributed Real-Time Operating System with Distributed Shared Memory for Embedded Control Systems
A Distributed Real-Time Operating System with Distributed Shared Memory for Embedded Control Systems
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DOI：
10.1109/dasc.2013.71
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
Takahiro Chiba;Myungryun Yoo;T. Yokoyama
中科院分区：
文献类型：
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作者：
Takahiro Chiba;Myungryun Yoo;T. Yokoyama
本文提出了一个分布式实时操作系统（DRTOS），它为分布式控制系统提供了一个分布式共享内存（DSM）服务。基于模型的设计在嵌入式控制软件设计中已经变得流行，并且可以从控制器模型生成软件模块的源代码。生成的软件模块通过共享变量交换其输入和输出值。我们开发了一个DRTOS与实时DSM服务，提供一个位置透明的环境，在分布式软件模块可以通过DSM交换输入和输出值。DRTOS是OSEK OS的扩展。我们使用一个名为FlexRay的实时网络，该网络基于TDMA（时分多址）协议。DSM的一致性是根据通过FlexRay传输数据的顺序来维护的，而不是使用节点间同步。如果FlexRay通信配置良好，DSM的最坏情况响应时间是可预测的。
The paper presents a distributed real-time operating system (DRTOS) that provides a distributed shared memory (DSM) service for distributed control systems. Model-based design has become popular in embedded control software design and the source code of software modules can be generated from a controller model. The generated software modules exchange their input and output values through shared variables. We develop a DRTOS with a real-time DSM service to provide a location-transparent environment, in which distributed software modules can exchange input and output values through the DSM. The DRTOS is an extension to OSEK OS. We use a real-time network called FlexRay, which is based on a TDMA (Time Division Multiple Access) protocol. The consistency of the DSM is maintained according to the order of data transfer through FlexRay, not using inter-node synchronization. The worst case response time of the DSM is predictable if the FlexRay communication is well configured.