This technical note considers a consensus problem of high-order multiagent systems with antagonistic interactions and communication noises. The interaction network associated the system is modeled by signed graph (called coopetition network) agent dynamics described general linear system. A novel stochastic-approximation based control strategy designed for each using relative state information from its neighbors. Additionally, convergence error analyzed stochastic stability theory. Finally,...

In this paper, a fixed-time tracking control problem is investigated for an uncertain high-order nonlinear pure-feedback systems with practical state constraints. To end, new transformation function lower change rate at the constraint boundary first proposed, which can not only handle both constrained and unconstrained states in unified way, but also reduce magnitude boundary. With help of proposed function, original system transformed to without Then, non-singular adaptive controller...

In this paper, a bipartite consensus problem is considered for high-order multiagent system with unknown disturbances and cooperative-competitive interactions. Two control strategies are proposed to guarantee two cases without an exogenous (called leader simplicity), respectively. Linearly parameterized approaches applied describe the time-varying disturbances. Distributed adaptive laws then designed parameters in Adaptive controllers fully distributed fashion, which does not rely on any...

Summary In this paper, a bipartite consensus problem is considered for high‐order multiagent system with cooperative‐competitive interactions and unknown time‐varying disturbances. A signed graph used to describe the interaction network associated system. The disturbances are expressed by linearly parameterized models, distributed adaptive laws designed estimate parameters in models. For case that there no exogenous reference system, fully control law proposed ensure all agents reach...

In this paper, an antisynchronization problem is considered for array of linearly coupled reaction-diffusion neural networks with cooperative-competitive interactions and time-varying coupling delays. The interaction topology among the nodes modeled by a multilayer signed graph. state evolution neuron in each layer network described equation (RDE) Dirichlet boundary conditions. Then, collective dynamics are RDEs both spatial diffusion coupling. An edge-based adaptive strategy proposed node...

The finite-time output regulation (FTOR) problem for linear heterogeneous multi-agent systems (MAS) is investigated in this brief. objective of brief to design controllers such that each agent can accurately track the reference signal and reject disturbance. disturbance are generated by an exosystem. It assumed only a part agents obtain state system matrix Then, distributed fixed-time observers firstly proposed estimate them, which ensure convergence estimation errors. Next, we both feedback...

In this paper, we address the distributed average tracking (DAT) problem for linear multi-agent systems with heterogeneous dynamics and external disturbances. The objective is that each agent can accurately track desired signal by designing controllers without initialization. means of individual time-varying reference inputs (one per agent). current setting technically more challenging practical than existing works. Based on feedforward method, a state feedback controller first designed to...

Slotted Aloha-based 5G random access networks are regarded as a key enabler for vehicle-to-everything (V2X) communications. For V2X communications, the age of information (AoI) is an important metric that measures freshness received data packets. To optimize AoI performance nodes, finite retry limit usually adopted in networks, where packet discarded if maximum number failed transmissions reached. In literature, optimization and characterization effects on optimal have remained largely...

This letter focuses on the optimal sum secure degree of freedom (SDoF) in a two-way wiretap channel (TW-WC), wherein two legitimate full-duplex multiple-antenna nodes cooperate with each other and are wiretapped by multiple antenna eavesdropper simultaneously. It aims to find SDoF pertaining secret-key capacity for TW-WC. First, we analyze upper bound lower bounds establishing their equivalence expression corresponding secrecy rate Subsequently, scenarios where configured an equal number...

Objective This study aimed to explore differences in sleep electroencephalogram (EEG) patterns individuals with prolonged disorders of consciousness, utilizing polysomnography (PSG) assist distinguishing between the vegetative state (VS)/unresponsive wakefulness syndrome (UWS) and minimally conscious (MCS), thereby reducing misdiagnosis rates enhancing quality medical treatment. Methods A total 40 patients consciousness (pDOC; 27 VS/UWS 13 MCS) underwent polysomnography. We analyzed...

This article investigates the fixed-time distributed average tracking (DAT) problem for nonlinear multiagent systems with unity relative degree under external disturbances. A control framework is developed to guarantee convergence of all agents' outputs target trajectory, which defined as multiple reference signals. The approach consists three main components. First, a steady-state generator introduced reconstruct desired trajectory. Using this generator, observer designed estimate...

In this article, we consider an adaptive optimal output regulation problem for general linear systems. The purpose of the is to guarantee stability closed-loop system and disturbance rejection, as well by minimizing some predefined performance indices. It can be realized using controller, in which both feedback control gain feedforward are included. First, dynamic programming (ADP) technique used solve gain. Next, unknown matrices plant explicitly computed. addition, based on property...

Abstract In this paper, we consider a finite‐time output regulation problem for class of nonlinear multi‐agent systems with unity relative degree. First, the robust estimation system matrix exosystem is achieved via distributed observer, provided that error converges to zero within finite time. Second, another observer developed estimate exosystem, showing reaches time under assumption only subset subsystems can obtain exosystem. Third, adaptive controllers are proposed such between each...

In this article, a finite-time distributed average tracking (DAT) problem is considered for unity relative degree nonlinear multi-agent systems (MASs) subject to external disturbances. The objective of article design controller such that the output each agent converges desired trajectory (the multiple signals) within finite time. First, we introduce steady-state generator, which can reproduce trajectory. Based on observer estimate trajectory, robustness initialization errors. Then, an...

Abstract Background To explore the pathogen distribution in Chinese females with vaginitis. Methods This retrospective study included vaginitis admitted at outpatient department of Gynecology Clinic Second Affiliated Hospital Kunming Medical University between January 2013 and June 2013. Data on vaginal pathogens inflammation were analyzed. Results The secretions from 15,601 gynecologic outpatients abnormal, including 8547 (54.78%) infection 7054 (45.22%) without. In patients infections, a...

In this paper, we consider both bipartite consensus and scaled control of high-order multi-agent systems with antagonistic interactions unknown disturbances. The interaction topology associated the system is described by a coopetition network modelled signed graph. Linearly parameterised approaches are used to model For problem, distributed adaptive state-feedback controller designed for each agent. agent using projection mechanism. convergence errors analysed help Lyapunov function method...