Huaguang Zhang

article

Optimization analysis of distributed energy consumption based on dynamic data synchronization and intelligent control

Liu Yang, Huaguang Zhang, Juan Zhang, Xiaohui Yue

International Journal of Adaptive Control and Signal Processing > 38 > 7 > 2502 - 2519

With the rapid development of the global renewable energy source field, the importance of dynamic index processing technology in distributed energy systems has become more and more obvious. To better improve the real‐time dynamic interaction means of microgrids in the energy Internet and optimize the relevant methods for microgrid energy consumption detection, this article proposes to introduce the...

article

Fully distributed event‐driven cooperation with unknown parameters under directed graphs

Shu Liu, Jiayue Sun, Huaguang Zhang

International Journal of Robust and Nonlinear Control > 33 > 3 > 2465 - 2478

In this article, a novel fully distributed dynamic event‐driven strategy is designed for linear multi‐agent systems (MASs) containing unknown parameters under general directed graphs. Each agent can achieve consensus asymptotically by communicating with its neighbors and does not need to use global information, so the proposed dynamic event‐driven algorithm can work in a fully distributed manner....

article

Multi‐stage dynamic event‐triggered containment control of nonlinear multi‐agent systems with input‐bounded leaders and time‐varying delay

Lihong Feng, Bonan Huang, Jiayue Sun, Xiangpeng Xie, more

International Journal of Robust and Nonlinear Control > 33 > 1 > 574 - 591

This article immerses in the event‐triggered containment control problem for a Lipschitz‐like nonlinear multi‐agent system with multiple active leaders. First, two event‐triggered mechanisms with internal dynamic variables are designed in both sensor‐observer (S‐O) and controller‐actuator (C‐A) channels to monitor data transmission and reduce communication burden. Second, an observer is constructed...

article

L₂‐gain robust trajectory tracking control for quadrotor UAV with unknown disturbance

Ao Bai, Yanhong Luo, Huaguang Zhang, Zhe Li

Asian Journal of Control > 24 > 6 > 3043 - 3055

In this paper, the trajectory tracking problem of the position and yaw angle of an underactuated quadrotor UAV is studied. Considering that the quadrotor UAV often encounters unknown disturbance resulted by model parameter perturbations and environmental changes, a new L₂‐gain robust control method is presented based on dissipation theory. First, the dynamic model of the quadrotor UAV with disturbances...

article

Distributed secondary voltage control of microgrids with actuators bias faults and directed communication topologies: Event‐triggered approaches

Meina Zhai, Qiuye Sun, Bingyu Wang, Rui Wang, more

International Journal of Robust and Nonlinear Control > 32 > 7 > 4422 - 4437

Microgrid (MG) is an effective means to achieve flexible management and control of distributed power sources. Compared with the traditional centralized secondary control method, the distributed coordinated secondary control strategy has higher flexibility and reliability. Nevertheless, few fault‐tolerant distributed secondary voltage control strategies for isolated MGs considered event‐triggered control...

article

Event‐triggered control for a class of nonlinear random systems involving time‐varying delay and exogenous disturbances

Ruipeng Xi, Huaguang Zhang, Yingchun Wang, Shaoxin Sun

Asian Journal of Control > 24 > 2 > 973 - 984

In terms of system modeling, random differential equations (RDEs) with colored noise are demonstrated to be more appropriate than stochastic differential equations (SDEs) relating to white noise in most practical situations. This paper discusses a category of nonlinear random systems involving time‐varying delay and exogenous disturbances. The definitions for noise‐to‐state practically stable (NSPS)...

article

Fixed‐time cooperative control for robotic manipulators with motion constraints using unified transformation function

Yang Liu, Huaguang Zhang, Yingchun Wang, Shuhang Yu

International Journal of Robust and Nonlinear Control > 31 > 14 > 6826 - 6844

This article investigates the fixed‐time consensus tracking control problem for multiagent systems composed of uncertain l‐link robotic manipulators with position and velocity constraints. Fuzzy logic systems are employed to model the uncertain dynamic of the robotic manipulators. In order to cope with the asymmetric yet time‐varying constraints, a nonlinear transformation function is introduced....

article

Fully distributed bipartite time‐varying formation control for uncertain linear multi‐agent systems under event‐triggered mechanism

Yuliang Cai, Huaguang Zhang, Juan Zhang, Ruipeng Xi, more

International Journal of Robust and Nonlinear Control > 31 > 11 > 5165 - 5187

This paper addresses the distributed bipartite time‐varying formation control for uncertain linear multi‐agent systems under limited communication resources. First, the distributed static bipartite control protocol with sampled data is proposed to address the time‐varying formation issue. It is noteworthy that in both controller updating and triggering condition monitoring, the communication is only...

article

Robust reliable H_∞ optimization control for uncertain discrete‐time Takagi–Sugeno fuzzy systems with time‐varying delay

Shaoxin Sun, Huaguang Zhang, Hanguang Su, Yuling Liang

Optimal Control Applications and Methods > 42 > 3 > 848 - 876

In this article, the problems of robust reliable H_∞ optimization control for discrete‐time nonlinear systems with or without time‐delay subject to faults are investigated. A static state feedback controller is explored for Takagi–Sugeno fuzzy systems against nonlinear dynamics, exogenous disturbances, and model uncertainties. In contrast to the design of conventional controllers, the proposed controller...

article

Fully distributed bipartite leader‐following consensus for uncertain linear multi‐agent systems with event‐triggered mechanism

Yuliang Cai, Huaguang Zhang, Qiang He, Weizhao Song

International Journal of Robust and Nonlinear Control > 31 > 4 > 1375 - 1394

This paper investigates the distributed bipartite leader‐following consensus for uncertain linear multi‐agent systems based on event‐triggered mechanism. Both cooperative communication and hostile communication between neighbor agents are taken into account. The distributed static bipartite event‐triggered controller is first proposed to address the consensus issue. Note that the communication in...

article

Integrated design of robust fault estimation and fault‐tolerant control against simultaneous actuator and sensor faults

Yunfei Mu, Huaguang Zhang, Kun Zhang, He Ren

Asian Journal of Control > 23 > 1 > 341 - 350

This paper investigates the problems of simultaneous actuator and sensor faults estimation, as well as the fault‐tolerant control scheme for a class of linear continuous‐time systems subject to external disturbances. First, the original system is transformed into a singular form by extending the actuator fault and sensor fault to be parts of the new state. Then, a new estimation technique named non‐fragile...

article

Fault estimation and tolerant control for discrete‐time nonlinear stochastic multiple‐delayed systems with intermittent sensor and actuator faults

Shaoxin Sun, Jing Dai, Yuliang Cai, Huaguang Zhang

International Journal of Robust and Nonlinear Control > 30 > 16 > 6761 - 6781

This article is concerned with the design of the observer and controller to perform fault estimation (FE) and fault tolerant control for the discrete‐time nonlinear stochastic systems with multiple time‐varying state delays and intermittent sensor and actuator faults. In comparison with the present research, the method addressed in this article is more flexible and feasible. A novel adaptive descriptor...

article

Semi‐global bipartite output consensus of heterogeneous multi‐agent systems subject to input saturation by finite‐time observer

Jie Duan, Huaguang Zhang, Yingchun Wang, He Ren

Asian Journal of Control > 22 > 4 > 1639 - 1648

In this paper, the semi‐global bipartite output consensus problem of heterogeneous linear multi‐agent systems is studied. Compared with related works, both cooperative interactions and antagonistic interactions between agents are considered, and the input saturation on each follower is taken into account. First, two distributed finite‐time observers are designed to recover the leader's state. Particularly,...

article

Optimal tracking control for non‐zero‐sum games of linear discrete‐time systems via off‐policy reinforcement learning

Yinlei Wen, Huaguang Zhang, Hanguang Su, He Ren

Optimal Control Applications and Methods > 41 > 4 > 1233 - 1250

In this article, a model‐free off‐policy reinforcement learning algorithm is applied to address the optimal tracking problem based on multiplayer non‐zero‐sum games for discrete‐time linear systems. In contrast to the traditional method and the policy iteration method for solving the optimal tracking problems, the proposed algorithm operates with the system data rather than the knowledge of the system...

article

A novel neural network discrete‐time optimal control design for nonlinear time‐delay systems using adaptive critic designs

Yuling Liang, Huaguang Zhang, Kun Zhang, Rui Wang

Optimal Control Applications and Methods > 41 > 3 > 748 - 764

In this article, a novel neural network (NN) optimal control approach using adaptive critic designs is developed for nonlinear discrete‐time (DT) systems with time delays. First, to eliminate the delay term of control input, a time‐delay matrix function is developed by designing a M network. Furthermore, the cost function is approximated by the critic NN, and the control signal can be obtained directly...

article

Fully distributed bipartite output consensus of heterogeneous linear multiagent systems based on event‐triggered transmission mechanism

Yuliang Cai, Huaguang Zhang, Rui Yu, Qiang He

International Journal of Robust and Nonlinear Control > 30 > 8 > 3382 - 3410

This study investigates the fully distributed bipartite output consensus issue of heterogeneous linear multiagent systems (HLMASs) based on event‐triggered transmission mechanism. Both the cooperative interaction and the antagonistic interaction between neighbor agents are considered. A fully distributed bipartite compensator consisting of time‐varying coupling gain and dynamic event‐triggered mechanism...

article

Observer‐based actuator fault estimation and proportional derivative fault tolerant control for continuous‐time singular systems

Yunfei Mu, Huaguang Zhang, Hanguang Su, Kun Zhang

Optimal Control Applications and Methods > 40 > 6 > 979 - 997

This paper focuses on designing fault estimation (FE) and fault tolerant control (FTC) schemes for continuous‐time singular systems affected by actuator fault. A novel observer called the extended proportional integral observer (PIO) is designed so that the estimations of system state and actuator fault can be obtained simultaneously. In contrast with the traditional PIO, better estimation performance...

article

Adaptive fault‐tolerant time‐varying formation tracking for multiagent systems with multiple leaders

Zhanshan Wang, Yanming Wu, Tieshan Li, Huaguang Zhang

International Journal of Robust and Nonlinear Control > 29 > 6 > 1807 - 1822

In this paper, an adaptive fault‐tolerant time‐varying formation control problem for nonlinear multiagent systems with multiple leaders is studied against actuator faults and state‐dependent uncertainties. Simultaneously, the followers form a predefined formation while tracking reference signal determined by the convex combination of the multiple leaders. Based on the neighboring relative information,...

article

Stochastic linear quadratic optimal control for model-free discrete-time systems based on Q-learning algorithm

Tao Wang, Huaguang Zhang, Yanhong Luo

Neurocomputing > 2018 > 312 > C > 1-8

Solving the stochastic linear quadratic (SLQ) optimal control problem generally needs full information about system dynamics. In this paper, a Q-learning iteration algorithm is adopted to solve the control problem for model-free discrete-time systems. Firstly, the condition of the well-posedness for the SLQ problem is given. In order to solve the SLQ problem, the stochastic problem is transformed...

article

Data-driven optimal tracking control for discrete-time systems with delays using adaptive dynamic programming

Yang Liu, Huaguang Zhang, Rui Yu, Qiuxia Qu

Journal of the Franklin Institute > 2018 > 355 > 13 > 5649-5666

In this paper, the data-driven adaptive dynamic programming (ADP) algorithm is proposed to deal with the optimal tracking problem for the general discrete-time (DT) systems with delays for the first time. The model-free ADP algorithm is presented by using only the system’s input, output and the reference trajectory of the finite steps of historical data. First, the augmented state equation is constructed...

INFONA - science communication portal

Search results for: Huaguang Zhang

Optimization analysis of distributed energy consumption based on dynamic data synchronization and intelligent control

Fully distributed event‐driven cooperation with unknown parameters under directed graphs

Multi‐stage dynamic event‐triggered containment control of nonlinear multi‐agent systems with input‐bounded leaders and time‐varying delay

L₂‐gain robust trajectory tracking control for quadrotor UAV with unknown disturbance

Distributed secondary voltage control of microgrids with actuators bias faults and directed communication topologies: Event‐triggered approaches

Event‐triggered control for a class of nonlinear random systems involving time‐varying delay and exogenous disturbances

Fixed‐time cooperative control for robotic manipulators with motion constraints using unified transformation function

Fully distributed bipartite time‐varying formation control for uncertain linear multi‐agent systems under event‐triggered mechanism

Robust reliable H_∞ optimization control for uncertain discrete‐time Takagi–Sugeno fuzzy systems with time‐varying delay

Fully distributed bipartite leader‐following consensus for uncertain linear multi‐agent systems with event‐triggered mechanism

Integrated design of robust fault estimation and fault‐tolerant control against simultaneous actuator and sensor faults

Fault estimation and tolerant control for discrete‐time nonlinear stochastic multiple‐delayed systems with intermittent sensor and actuator faults

Semi‐global bipartite output consensus of heterogeneous multi‐agent systems subject to input saturation by finite‐time observer

Optimal tracking control for non‐zero‐sum games of linear discrete‐time systems via off‐policy reinforcement learning

A novel neural network discrete‐time optimal control design for nonlinear time‐delay systems using adaptive critic designs

Fully distributed bipartite output consensus of heterogeneous linear multiagent systems based on event‐triggered transmission mechanism

Observer‐based actuator fault estimation and proportional derivative fault tolerant control for continuous‐time singular systems

Adaptive fault‐tolerant time‐varying formation tracking for multiagent systems with multiple leaders

Stochastic linear quadratic optimal control for model-free discrete-time systems based on Q-learning algorithm

Data-driven optimal tracking control for discrete-time systems with delays using adaptive dynamic programming

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