论文标题
时间触发的无线体系结构
The Time-Triggered Wireless Architecture
论文作者
论文摘要
与有线解决方案相比，无线互连传感器，执行器和控制器有望更大的灵活性，更低的安装和维护成本以及在恶劣条件下更高的鲁棒性。但是，为了促进网络物理系统（CPS）中无线通信的采用，功能性和非功能性能必须与有线体系结构已知的属性相似。因此，我们介绍了时间触发的无线（TTW），这是一种用于多模式CPS的无线体系结构，可提供可靠的通信，并在分布式应用程序中的端到端延迟保证在低成本，低功率嵌入式设备上执行。我们通过利用基于同步传输的通信堆栈的高可靠性和确定性行为来实现这一目标，并通过解决新颖的共同安排问题来耦合分布式任务执行和跨无线网络的消息交流的时间。尽管TTW中的某些概念已经存在一段时间了，并且TTW已经成功地用于控制和协调具有闭环稳定性保证的多个机械系统，但本文介绍了TTW背后的关键算法，调度和网络机制，以及TTW背后的关键算法，以及他们的实验评估，这些算法是尚未知道的。 TTW是开源的，可以使用：TTW.ETHZ.CH
Wirelessly interconnected sensors, actuators, and controllers promise greater flexibility, lower installation and maintenance costs, and higher robustness in harsh conditions than wired solutions. However, to facilitate the adoption of wireless communication in cyber-physical systems (CPS), the functional and non-functional properties must be similar to those known from wired architectures. We thus present Time-Triggered Wireless (TTW), a wireless architecture for multi-mode CPS that offers reliable communication with guarantees on end-to-end delays among distributed applications executing on low-cost, low-power embedded devices. We achieve this by exploiting the high reliability and deterministic behavior of a synchronous transmission based communication stack we design, and by coupling the timings of distributed task executions and message exchanges across the wireless network by solving a novel co-scheduling problem. While some of the concepts in TTW have existed for some time and TTW has already been successfully applied for feedback control and coordination of multiple mechanical systems with closed-loop stability guarantees, this paper presents the key algorithmic, scheduling, and networking mechanisms behind TTW, along with their experimental evaluation, which have not been known so far. TTW is open source and ready to use: ttw.ethz.ch
