Electrical Engineering and Systems Science > Systems and Control
[Submitted on 26 Jan 2021 (v1), last revised 17 Oct 2021 (this version, v2)]
Title:The Wireless Control Bus: Enabling Efficient Multi-hop Event-Triggered Control with Concurrent Transmissions
View PDFAbstract:Event-triggered control (ETC) holds the potential to significantly improve the efficiency of wireless networked control systems. Unfortunately, its real-world impact has hitherto been hampered by the lack of a network stack able to transfer its benefits from theory to practice specifically by supporting the latency and reliability requirements of the aperiodic communication ETC induces. This is precisely the contribution of this paper. Our Wireless Control Bus (WCB) exploits carefully orchestrated network-wide floods of concurrent transmissions to minimize overhead during quiescent, steady-state periods, and ensures timely and reliable collection of sensor readings and dissemination of actuation commands when an ETC triggering condition is violated. Using a cyber-physical testbed emulating a water distribution system controlled over a real-world multi-hop wireless network, we show that ETC over WCB achieves the same quality of periodic control at a fraction of the energy costs, therefore unleashing and concretely demonstrating its full potential for the first time.
Submission history
From: Gian Pietro Picco [view email][v1] Tue, 26 Jan 2021 17:38:22 UTC (1,311 KB)
[v2] Sun, 17 Oct 2021 09:50:32 UTC (3,642 KB)
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