QSR-Dissipativity and Passivity Analysis of Event-Triggered Networked Control Cyber-Physical Systems

TL;DR

This paper develops QSR-dissipativity and passivity conditions for event-triggered networked control systems, reducing communication load while ensuring stability and passivity based on plant-controller passivity levels.

Contribution

It introduces new dissipativity and passivity criteria for event-triggered NCS with various sampler placements, enhancing design flexibility and efficiency.

Findings

Significant reduction in communication load achieved.

Passivity and stability depend on plant and controller passivity levels.

Trade-offs identified between passivity, stability, and communication rate.

Abstract

Input feed-forward output feedback passive (IF-OFP) systems define a great number of dynamical systems. In this report, we show that dissipativity and passivity-based control combined with event-triggered networked control systems (NCS) provide a powerful platform for the design of cyber-physical systems (CPS). We propose QSR-dissipativity, passivity and L2 stability conditions for an event-triggered networked control system in three cases where: (i) an input-output event-triggering sampler condition is located on the plant's output side, (ii) an input-output event-triggering sampler condition is located on controller's output side, (iii) input-output event-triggering sampler conditions are located on the outputs of both the plant and controller. We will show that this leads to a large decrease in communicational load amongst sub-units in networked control structures. We show that passivity and stability conditions depend on passivity levels for the plant and controller. Our results also illustrate the trade-off among passivity levels, stability, and system's dependence on the rate of communication between the plant and controller.