Control Communication Co-Design for Wide Area Cyber-Physical Systems

by   Laksh Bhatia, et al.

Wide Area Cyber-Physical Systems (WA-CPSs) are a class of control systems that integrate low-powered sensors, heterogeneous actuators and computer controllers into large infrastructure that span multi-kilometre distances. Current wireless communication technologies are incapable of meeting the communication requirements of range and bounded delays needed for the control of WA-CPSs. To solve this problem, we use a Control-Communication Co-design approach for WA-CPSs, that we refer to as the C^3 approach, to design a novel Low-Power Wide Area (LPWA) MAC protocol called Ctrl-MAC and its associated event-triggered controller that can guarantee the closed-loop stability of a WA-CPS. This is the first paper to show that LPWA wireless communication technologies can support the control of WA-CPSs. LPWA technologies are designed to support one-way communication for monitoring and are not appropriate for control. We present this work using an example of a water distribution network application which we evaluate both through a co-simulator (modelling both physical and cyber subsystems) and testbed deployments. Our evaluation demonstrates full control stability, with up to 50% better packet delivery ratios and 80% less average end-to-end delays when compared to a state of the art LPWA technology. We also evaluate our scheme against an idealised, wired, centralised, control architecture and show that the controller maintains stability and the overshoots remain within bounds.



page 21


Poster Abstract: LPWA-MAC - a Low Power Wide Area network MAC protocol for cyber-physical systems

Low-Power Wide-Area Networks (LPWANs) are being successfully used for th...

Scaling Beyond Bandwidth Limitations: Wireless Control With Stability Guarantees Under Overload

An important class of cyber-physical systems relies on multiple agents t...

Towards cyber-physical systems robust to communication delays: A differential game approach

Collaboration between interconnected cyber-physical systems is becoming ...

The Separator, a Two-Phase Oil and Water Gravity CPS Separator Testbed

Industrial Control Systems (ICS) are evolving with advances in new techn...

The Limits of LoRaWAN in Event-Triggered Wireless Networked Control Systems

Wireless sensors and actuators offer benefits to large industrial contro...

Translating Cyber-Physical Control Application Requirements to Network level Parameters

Cyber-physical control applications impose strict requirements on the re...

The Time-Triggered Wireless Architecture

Wirelessly interconnected sensors, actuators, and controllers promise gr...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.