Event-triggered control for multi-agent network with limited digital communication

Abstract

This paper considers the consensus problem of digital multi-agent networks by employing dynamic encode/decode technology and distributed event-triggered control strategy. In this paper, a novel integrated communication framework employing dynamic encode/decode technology and event-triggered control strategy is designed to describe the communication process in digital channels. According to this framework, a specific communication algorithm is provided in integrated communication environment. A distributed event-triggered condition that only depends on the local information of network agents is developed, and the relevant consensus analysis is given to explain the sufficiency and reasonability. Furthermore, a onebit quantized scheme is proposed concomitantly, from which it is shown that the global consensus can still be reached though the number of bits that are responsible for information exchange between agents at each quantized transmission is only one bit. Finally, simulation results are given to verify the effectiveness of proposed approach and the correctness of theoretical results.

Distributed Adaptive Event‐Triggered Control for Leader‐Following Consensus of Multi‐Agent Systems

“…In the following, we will estimate each term on the righthand of (12). According to inequality (9) and Assumption 2, it follows from (8) that…”

“…In this paper, a first-order nonlinear multi-agent systems described asẋ i (t) = f ( x i , t ) + u i (t) is studied. It includes the linear multi-agent systems with single-integrator dynamicsẋ i (t) = u i (t) considered in existing works [11,12,18] as special case. Furthermore, for the linear multi-agent systems formulated asẋ i (t) = x i (t) + u i (t), x i (t) ∈ R n ,  ∈ R n×n ,  ∈ R n×1 , u i ∈ R, the results of this paper are also applicable by using kronecker product and vector product to replace scalar-multiplication.…”

“…In other words, the controllers can only be updated at discrete time instants with limited update numbers and communication amounts. For the consensus control of multi‐agent systems, a commonly used approach in the present literature is event‐triggered control, which is only updated when the error magnitude exceeds a certain threshold, and then the amounts of communication between controller and actuator and numbers of controller updates can decrease significantly .…”

A novel distributed event-triggered control for reactive power sharing based on hierarchical structure in islanded microgrid

“…With the development of distributed consensus cooperation with event-triggering function, some related research works have been studied. The general first-order discrete protocol is usually defined as follows (see, for example, Meng et al 16 and Gao et al 17 )…”

Fault-Tolerant Consensus Control for Multiagent Systems: An Encryption-Decryption Scheme

“…On the other hand, PDR aims to perturb released data such that the original data can not be inferred from the perturbed data, and simultaneously, the perturbed data can still enable certain utilities [27], which is similar to the codingdecoding technology [33]. The coding-decoding technology has been investigated in the existing literature (see [4], [12], [21], [22] for single-integrator MASs, [23], [25] for double-integrator MASs, [17], [20], [32] for general linear MASs and [7] for nonlinear MASs) with the aim of designing a pair of encoder-decoder appropriately such that at each time instant, the decoding error is possibly small with the minimum size of the released data. Based on the above analysis, in this paper, we propose a novel encryption-decryption scheme combining CED and PDR technologies, where 1) the CED technology is employed to ensure the high security of the system; and 2) the PDR technology, realized by the coding-decoding technology, is employed to reduce the size of the released data, thereby reducing the heavy calculations that will be imposed on the CED algorithm.…”