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学者姓名：杜胜利
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摘要 ：
This paper is concerned with the event-triggered model predictive control (ETMPC) problem of nitrogen removal process in the wastewater treatment plants. The main objective of this paper is to design an event-triggered control strategy such that the computation burden can be reduced effectively while maintaining the desired system performance. Unlike existing model predictive control (MPC), the controller in the proposed ETMPC takes action when certain event conditions are satisfied, and thus can reduce the communication and computation resource caused by continuous controller update. The triggering condition is designed according to the system output error and the prediction step of the MPC controller, and thus is easy to check. Moreover, a state space model of the studied nitrogen removal process is built, based on which the ETMPC is designed. The controller is developed to maintain the tracking performance of the dissolved oxygen concentration and nitrate nitrogen concentration by adjusting two key variables in the WWTPs. The stability analysis of the closed-loop system under the designed control strategy is conducted by using the Lyapunov stability theory. Some simulations are conducted to verify the effectiveness of the proposed method. Simulation results show that the proposed method can greatly reduce the number of controller update by up to 60% compared with MPC, whereas the ISE only increases by about 0.1, which is acceptable for WWTPs.
关键词 ：
Model predictive control (MPC) Model predictive control (MPC) Event-triggered control Event-triggered control WWTPs WWTPs Subspace identification Subspace identification
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| GB/T 7714 | Du, Shengli , Zhang, Qingda , Han, Honggui et al. Event-triggered model predictive control of wastewater treatment plants [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2022 , 47 . |
| MLA | Du, Shengli et al. "Event-triggered model predictive control of wastewater treatment plants" . | JOURNAL OF WATER PROCESS ENGINEERING 47 (2022) . |
| APA | Du, Shengli , Zhang, Qingda , Han, Honggui , Sun, Haoyuan , Qiao, Junfei . Event-triggered model predictive control of wastewater treatment plants . | JOURNAL OF WATER PROCESS ENGINEERING , 2022 , 47 . |
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摘要 ：
Exponential stability analysis of discrete-time nonlinear systems with a time-varying delay is concerned in this article. The main contribution of this article lies in proposing an improved stability analysis method called a delay-mode-based functional method. The improved method is presented by weakening a condition in the Lyapunov-Krasovskii functional method. With the help of the new method, less conservative exponential stability criteria of discrete-time linear systems with a time-varying delay are obtained and two classical examples are given to show that the delay-mode-based functional method is effective.
关键词 ：
discrete-time systems discrete-time systems exponential stability analysis exponential stability analysis time-varying delays time-varying delays
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| GB/T 7714 | Li, Xu , Wang, Rui , Du, Shengli et al. An improved exponential stability analysis method for discrete-time systems with a time-varying delay [J]. | INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL , 2021 . |
| MLA | Li, Xu et al. "An improved exponential stability analysis method for discrete-time systems with a time-varying delay" . | INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL (2021) . |
| APA | Li, Xu , Wang, Rui , Du, Shengli , Li, Te . An improved exponential stability analysis method for discrete-time systems with a time-varying delay . | INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL , 2021 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The current study is dedicated to addressing the stability and weighted (Formula presented.) -gain performance analysis of switched impulsive positive systems (SIPSs). Firstly, by designing a novel multiple piecewise-continuous copositive linear Lyapunov function and using the mode-dependent average dwell time (MDADT) switching method, improved stability conditions that are able to achieve a tighter dwell time bound are developed. It is shown that the system under study is stable and possesses an attenuation property under the designed switching signals. Secondly, with the above stability conditions, a more effective controller design strategy has been proposed. The solved controllers are both quasi-time dependent and mode-dependent. Moreover, the constraint on the rank of the controller and the computation burden caused by iteration algorithm used in literature are relaxed. Finally, the feasibility and superiority of the proposed strategies are verified by some simulations. © 2021 The Authors. IET Control Theory & Applications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
关键词 ：
Controllers Controllers Iterative methods Iterative methods Lyapunov functions Lyapunov functions
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| GB/T 7714 | Du, Shengli , Dong, Jiangtao , Wang, Yuee . Stability and stabilisation for switched impulsive positive systems [J]. | IET Control Theory and Applications , 2021 , 15 (6) : 839-849 . |
| MLA | Du, Shengli et al. "Stability and stabilisation for switched impulsive positive systems" . | IET Control Theory and Applications 15 . 6 (2021) : 839-849 . |
| APA | Du, Shengli , Dong, Jiangtao , Wang, Yuee . Stability and stabilisation for switched impulsive positive systems . | IET Control Theory and Applications , 2021 , 15 (6) , 839-849 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This article is concerned with the exponential stability and l(1)-gain performance analysis of discrete-time switched positive systems (DTSPSs) under mode-dependent average dwell time (MDADT) switching. A novel linear copositive Lyapunov function, which is both quasi-time-dependent and mode-dependent, is designed for the stability and performance analysis. Stability conditions are developed such that the considered DTSPS is exponentially stable and also attains an attenuation performance. The solved conditions for the controllers design are presented in terms of linear programming (LP), and are both quasi-time-dependent and mode-dependent. Two examples are organized to validate the effectiveness of the proposed scheme finally.
关键词 ：
quasi-time-dependent quasi-time-dependent switched positive systems (SPSs) switched positive systems (SPSs) l(1)-gain l(1)-gain Controller synthesis Controller synthesis
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| GB/T 7714 | Li, Xiaoli , Du, Sheng-Li , Zhao, Xudong . Stability and l(1)-Gain Analysis for Switched Positive Systems With MDADT Based on Quasi-Time-Dependent Approach [J]. | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (9) : 5846-5854 . |
| MLA | Li, Xiaoli et al. "Stability and l(1)-Gain Analysis for Switched Positive Systems With MDADT Based on Quasi-Time-Dependent Approach" . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 51 . 9 (2021) : 5846-5854 . |
| APA | Li, Xiaoli , Du, Sheng-Li , Zhao, Xudong . Stability and l(1)-Gain Analysis for Switched Positive Systems With MDADT Based on Quasi-Time-Dependent Approach . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (9) , 5846-5854 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The paper proposes a novel event-triggered control scheme for nonlinear systems. Specifically, the closed-loop system is associated with a pair of auxiliary input and output. The auxiliary output is defined as the derivative of the continuous-time input function, while the auxiliary input is defined as the input disturbance caused by the sampling or equivalently the integral of the auxiliary output over the sampling period. As a result, it forms a cyclic mapping from the input to the output via the system dynamics and back from the output to the input via the integral. The event-triggered law is constructed to make the mapping contractive such that the stabilization is achieved and an easy-to-check Zeno free condition is provided. Within this framework, we develop a theorem for the event-triggered control of interconnected nonlinear systems which is employed to solve the event-triggered control for lower-triangular systems with dynamic uncertainties. (C) 2021 Elsevier Ltd. All rights reserved.
关键词 ：
Lower-triangular systems Lower-triangular systems Event-triggered control Event-triggered control Nonlinear systems Nonlinear systems Zeno behavior Zeno behavior
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| GB/T 7714 | Zhu, Lijun , Chen, Zhiyong , Hill, David J. et al. Event-triggered controllers based on the supremum norm of sampling-induced error [J]. | AUTOMATICA , 2021 , 128 . |
| MLA | Zhu, Lijun et al. "Event-triggered controllers based on the supremum norm of sampling-induced error" . | AUTOMATICA 128 (2021) . |
| APA | Zhu, Lijun , Chen, Zhiyong , Hill, David J. , Du, Shengli . Event-triggered controllers based on the supremum norm of sampling-induced error . | AUTOMATICA , 2021 , 128 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This paper is concerned with the secure consensus problem of multiagent systems under switching topologies. The studied multiagent systems are affected by both denial-of-service (DoS) attacks and external disturbances. To solve the secure H∞ consensus problems, some modified definitions are presented. Some graph-based Lyapunov functions, which are based on the solutions of some Lyapunov equations and the graph information, are also designed for the H∞ performance analysis. Moreover, graph-based frequency and durations have also been presented for attaining the expected system performance. The stabilization controllers are also developed based on the solutions to some Lyapunov equations and an algebraic Riccati equation (ARE), which are easy to acquire. Some simulations are provided to validate the feasibility of the proposed scheme. © 2021 Elsevier Inc.
关键词 ：
Graphic methods Graphic methods Topology Topology Lyapunov functions Lyapunov functions Denial-of-service attack Denial-of-service attack Riccati equations Riccati equations Multi agent systems Multi agent systems
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| GB/T 7714 | Du, Shengli , Wang, Yuee , Dong, Lijing et al. Secure consensus of multiagent systems with DoS attacks via a graph-based approach [J]. | Information Sciences , 2021 , 570 : 94-104 . |
| MLA | Du, Shengli et al. "Secure consensus of multiagent systems with DoS attacks via a graph-based approach" . | Information Sciences 570 (2021) : 94-104 . |
| APA | Du, Shengli , Wang, Yuee , Dong, Lijing , Li, Xiaoli . Secure consensus of multiagent systems with DoS attacks via a graph-based approach . | Information Sciences , 2021 , 570 , 94-104 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This work presents a consensus strategy for multiagent networked systems with time-varying delays. A new control technique is first developed, named observer-based distributed periodic event-triggered control. Aiming at leader-following consensus strategy, the state update of every follower agent just demands the neighbor state at the moment of its own event. Then, based on matrix inequalities, the sufficient criteria for the systems under consideration are established, which is easier to satisfy and shows that the consensus can be reached exponentially. Finally, one numerical example is presented to indicate the performance of the proposed method.
关键词 ：
event-triggered control event-triggered control leader-following consensus leader-following consensus multiagent systems multiagent systems observer-based output feedback observer-based output feedback stability stability
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| GB/T 7714 | Liu, Hui-Wei , Du, Sheng-Li , Wang, Xue-Fang et al. Consensus of multiagent systems with time-varying delays: An observer-based distributed periodic event-triggered control approach [J]. | ASIAN JOURNAL OF CONTROL , 2021 . |
| MLA | Liu, Hui-Wei et al. "Consensus of multiagent systems with time-varying delays: An observer-based distributed periodic event-triggered control approach" . | ASIAN JOURNAL OF CONTROL (2021) . |
| APA | Liu, Hui-Wei , Du, Sheng-Li , Wang, Xue-Fang , Sun, Tao , Zhong, Chong-Quan . Consensus of multiagent systems with time-varying delays: An observer-based distributed periodic event-triggered control approach . | ASIAN JOURNAL OF CONTROL , 2021 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Anaerobic-anoxic-oxic (A(2)O) reactors, as the core parts of wastewater treatment process (WWTP), have attracted considerable attention to achieve the reliability of denitrification and dephosphorization. However, it is difficult to realize the optimal operation of A(2)O reactors due to the existence of nonlinear dynamics and large uncertainties. To solve this problem, a robust optimal control (ROC) strategy is developed to improve the operation performance of A(2)O reactors. First, data-driven systematic evaluation criteria are developed to describe the operational indicators of changeable conditions. Second, a robust optimization algorithm is designed to select the optimal solution. Third, a fuzzy neural network (FNN) is used to track the optimal solution in the control process. Finally, this proposed ROC strategy is applied to the phosphorus removal benchmark simulation model (BSM1-P) and the real A(2)O reactors. The results demonstrate that the strategy developed in this paper has great potential for application in real A(2)O reactors.
关键词 ：
anaerobic-anoxic-oxic reactors anaerobic-anoxic-oxic reactors fuzzy neural network fuzzy neural network robust optimal control robust optimal control robust optimization robust optimization
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| GB/T 7714 | Han HongGui , Zhang JiaCheng , Du ShengLi et al. Robust optimal control for anaerobic-anoxic-oxic reactors [J]. | SCIENCE CHINA-TECHNOLOGICAL SCIENCES , 2021 , 64 (7) : 1485-1499 . |
| MLA | Han HongGui et al. "Robust optimal control for anaerobic-anoxic-oxic reactors" . | SCIENCE CHINA-TECHNOLOGICAL SCIENCES 64 . 7 (2021) : 1485-1499 . |
| APA | Han HongGui , Zhang JiaCheng , Du ShengLi , Sun HaoYuan , Qiao JunFei . Robust optimal control for anaerobic-anoxic-oxic reactors . | SCIENCE CHINA-TECHNOLOGICAL SCIENCES , 2021 , 64 (7) , 1485-1499 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This article investigates the resilient output synchronization problem of a class of linear heterogeneous multiagent systems subjected to denial-of-service (DoS) attacks. Two types of control mechanisms, namely, event- and self-triggered control mechanisms, are presented so as to cut down unnecessary information transmission. Both of these two mechanisms are distributed, and thus, only local information of each agent and its neighboring agents is adopted for the event condition design. The DoS attacks are considered to be aperiodic, and the quantitative relationship between the attributes of the DoS attacks and the synchronization is also revealed. It is shown that the output synchronization can be achieved exponentially in the presence of DoS attacks under the proposed control mechanisms. The validness of the provided mechanisms is certified by a simulation example.
关键词 ：
Synchronization Synchronization Laplace equations Laplace equations self-triggered control self-triggered control Security Security Denial-of-service attack Denial-of-service attack multiagent systems multiagent systems Eigenvalues and eigenfunctions Eigenvalues and eigenfunctions output synchronization output synchronization event event Denial-of-service (DoS) attacks Denial-of-service (DoS) attacks Communication networks Communication networks Multi-agent systems Multi-agent systems
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| GB/T 7714 | Du, Shengli , Xu, Wenying , Qiao, Junfei et al. Resilient Output Synchronization of Heterogeneous Multiagent Systems With DoS Attacks Under Distributed Event-/Self-Triggered Control [J]. | IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS , 2021 , 34 (3) : 1169-1178 . |
| MLA | Du, Shengli et al. "Resilient Output Synchronization of Heterogeneous Multiagent Systems With DoS Attacks Under Distributed Event-/Self-Triggered Control" . | IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS 34 . 3 (2021) : 1169-1178 . |
| APA | Du, Shengli , Xu, Wenying , Qiao, Junfei , Ho, Daniel W. C. . Resilient Output Synchronization of Heterogeneous Multiagent Systems With DoS Attacks Under Distributed Event-/Self-Triggered Control . | IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS , 2021 , 34 (3) , 1169-1178 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Coordination tracking problem of multiagent systems is studied for the application of threat defense in a monitored area. When targets intrude this area, agents which are nearby to them are set to track the targets. Modified nonsingular terminal sliding mode controller is proposed for the agents. We design a novel continuous function in the controller to eliminate the singularity, which makes it able to estimate the finite tracking time. Based on the estimated time, generalized Voronoi diagram considering the velocity of second-order agents and targets is presented. During the tracking process, the event of node failures will trigger a designed coordination strategy. The event that the target enters a new generalized Voronoi cell triggers active replacement coordination strategy. With the proposed active replacement strategy, the tracking time is reduced even under node failures. Comparison lemma is utilized to deal with the agent switching issue caused by node failures or active replacements under new event-triggered coordination strategies.
关键词 ：
Multi-agent systems Multi-agent systems Monitoring Monitoring multiagent systems multiagent systems Topology Topology Voronoi diagrams Voronoi diagrams finite time finite time sliding mode control sliding mode control Switches Switches Sliding mode control Sliding mode control Coordination tracking Coordination tracking Target tracking Target tracking
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| GB/T 7714 | Dong, Lijing , Ho, Daniel W. C. , Du, Sheng-Li . Coordination Tracking of Multiagent Systems With Active Replacement Strategy Under Node Failures [J]. | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (11) : 6852-6862 . |
| MLA | Dong, Lijing et al. "Coordination Tracking of Multiagent Systems With Active Replacement Strategy Under Node Failures" . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 51 . 11 (2021) : 6852-6862 . |
| APA | Dong, Lijing , Ho, Daniel W. C. , Du, Sheng-Li . Coordination Tracking of Multiagent Systems With Active Replacement Strategy Under Node Failures . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2021 , 51 (11) , 6852-6862 . |
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