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学者姓名：齐义文
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Abstract ：
In this article, the full differential privacy-preserving problem for switched LPV systems is concerned. The security of a control system is the ability to avoid intentional sabotage or accidental interference affecting its normal operation. For switched LPV systems, it contains both internal (scheduling variable and switching signal) and external (system output) information that needs to be protected, we adopt differential privacy to achieve its full privacy preserving. The resulting challenges are: 1) privacy design for three types of system signals and 2) dual asynchronization analysis under triple privacy noise. Accordingly, three differential privacy definitions and Laplace (resp. uniform) noise design methods are presented. Sufficient conditions for H-infinity control design with dual asynchronization analysis are given. Finally, simulation results verify the effectiveness of the proposed method.
Keyword ：
Databases Databases Data privacy Data privacy Differential privacy Differential privacy Dual asynchronization Dual asynchronization Dynamical systems Dynamical systems full differential privacy preserving full differential privacy preserving H-infinity control H-infinity control Privacy Privacy Security Security switched LPV systems switched LPV systems Switches Switches
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| GB/T 7714 | Qi, Yiwen , Tang, Yiwen , Kawano, Yu . Full Differential Privacy Preserving for Switched LPV Systems [J]. | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2024 , 54 (5) : 3153-3163 . |
| MLA | Qi, Yiwen 等. "Full Differential Privacy Preserving for Switched LPV Systems" . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 54 . 5 (2024) : 3153-3163 . |
| APA | Qi, Yiwen , Tang, Yiwen , Kawano, Yu . Full Differential Privacy Preserving for Switched LPV Systems . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2024 , 54 (5) , 3153-3163 . |
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This paper proposes an optimal output synchronization control method for heterogeneous multi -agent systems (HMASs) under a performance -dependent switching topology and DoS attacks. First, local and global switched performance index functions (SPIF) and SPIF-dependent topology switching law are proposed, respectively, thus, the control performance and topology quality can be quantitatively expressed. Second, an adaptive dynamic programming (ADP) algorithm with mode switching is proposed, aimed at dealing with the difficult Hamilton-Jacobi- Bellman equation, as well as the analytical complexity caused by the switching dynamics. The convergence of the switched ADP algorithm is proven to ensure its correct implementation. Then, for different topologies, multi -mode Actor-Critic neural networks (NNs) are built for each agent to calculate optimized control policies and SPIF, respectively. Furthermore, an NNbased state compensation mechanism is designed to expand the applicability of the designed switched ADP algorithm when the leader's output transmission is unreliable. Finally, the results of numerical examples confirm that the proposed method is feasible.
Keyword ：
DoS attacks DoS attacks Heterogeneous multi-agent systems Heterogeneous multi-agent systems Switched adaptive dynamic programming Switched adaptive dynamic programming Switching topology Switching topology
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| GB/T 7714 | Qi, Yiwen , Wang, Yunlong , Geng, Honglin et al. Optimal synchronization for multi-agent systems: A performance-dependent switching topology [J]. | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (6) . |
| MLA | Qi, Yiwen et al. "Optimal synchronization for multi-agent systems: A performance-dependent switching topology" . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS 361 . 6 (2024) . |
| APA | Qi, Yiwen , Wang, Yunlong , Geng, Honglin , Xing, Ning , Zheng, Zonghua , Li, He . Optimal synchronization for multi-agent systems: A performance-dependent switching topology . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (6) . |
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This paper explores event-triggered model predictive control (MPC) for constrained switched systems, incorporating a buffer-based anti-attack (BBAA) approach to ensure network security. Since the system state is unknown and disturbed, an observer-based $ H_{\infty } $ H infinity MPC approach is used to estimate the system state and suppress disturbance. Furthermore, the estimated state and control input can be optimised by minimising the performance function. Considering that the system state is subject to denial of service (DoS) attacks in the feedback channel, the BBAA approach is used to reconstruct the estimated state, thereby reducing the impact of attacks on system performance. To improve the utilisation of network resources, a set of event-triggering mechanisms (ETMs) is used. In addition, a set of matrix inequality conditions is given to constrain the gains of controllers and observers. Then, the system $ H_{\infty } $ H infinity performance is demonstrated by applying the average dwell time (ADT) and the Lyapunov function method, and the complex coupling between model switching, DoS attacks and event-triggering is analysed. Simulation results validate the effectiveness of the proposed approach.
Keyword ：
buffer-based anti-attack approach buffer-based anti-attack approach DoS attacks DoS attacks model predictive control model predictive control Switched systems Switched systems
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| GB/T 7714 | Lv, Yanbo , Qi, Yiwen , Guo, Shitong et al. Enhancing network security in constrained switched systems: event-triggered MPC with a buffer-based anti-attack approach [J]. | INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE , 2024 , 55 (14) : 2963-2979 . |
| MLA | Lv, Yanbo et al. "Enhancing network security in constrained switched systems: event-triggered MPC with a buffer-based anti-attack approach" . | INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE 55 . 14 (2024) : 2963-2979 . |
| APA | Lv, Yanbo , Qi, Yiwen , Guo, Shitong , Qu, Ziyu , Li, He . Enhancing network security in constrained switched systems: event-triggered MPC with a buffer-based anti-attack approach . | INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE , 2024 , 55 (14) , 2963-2979 . |
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This paper concerns fault detection filter design for switched Takagi-Sugeno (T-S) fuzzy systems against deception attacks. A fuzzy fault detection filter with attacked input signal is presented to detect system faults. Switched event-triggering schemes are adopted to efficiently utilize limited network communication bandwidth resources. Moreover, the filter adopts nonsynchronous premise variables with the system to handle communication delays caused by event-triggering schemes and network transmission. Then, the switched fuzzy residual systems are developed by utilizing a model transformation technique. Furthermore, by using piecewise Lyapunov functional method and persistent dwell time (PDT) technique, the resulting criterion provides sufficient conditions to ensure that switched fuzzy residual systems under deception attacks are mean-square exponentially (MSE) stable with an H1 performance. Accordingly, the conditions for the co-design of fuzzy filter and event-triggering schemes are given. Finally, the effectiveness of the design of the fault detection filter is verified by a numerical simulation and an air path of the TCSI engine simulation.
Keyword ：
Deception attacks Deception attacks Event-triggering (ET) schemes Event-triggering (ET) schemes Fault detection filter Fault detection filter PDT PDT Switched T-S fuzzy (STSF) systems Switched T-S fuzzy (STSF) systems
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| GB/T 7714 | Yao, Zhaohui , Tang, Yiwen , Yuan, Shuo et al. Filtering for PDT Switched T-S Fuzzy Systems With Attacks and Disorders: A TCSI Engine Fault Detection [J]. | INTERNATIONAL JOURNAL OF FUZZY SYSTEMS , 2023 , 25 (4) : 1429-1443 . |
| MLA | Yao, Zhaohui et al. "Filtering for PDT Switched T-S Fuzzy Systems With Attacks and Disorders: A TCSI Engine Fault Detection" . | INTERNATIONAL JOURNAL OF FUZZY SYSTEMS 25 . 4 (2023) : 1429-1443 . |
| APA | Yao, Zhaohui , Tang, Yiwen , Yuan, Shuo , Qi, Yiwen . Filtering for PDT Switched T-S Fuzzy Systems With Attacks and Disorders: A TCSI Engine Fault Detection . | INTERNATIONAL JOURNAL OF FUZZY SYSTEMS , 2023 , 25 (4) , 1429-1443 . |
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Iterative learning control (ILC) is an effective control strategy for complex systems that uses trial and error to obtain desired output trajectories. This paper focuses on the is-sue of event-triggered ILC for switched systems with asynchronous switching. An event -triggered ILC method is designed to reduce unnecessary controller updates during itera-tions. The main technical contribution is that the analysis and synthesis are performed in both time and iteration domains. First, in order to solve the asynchronous switching prob-lem in the time direction and the update problem in the iteration direction, a Lyapunov function involving both directions is adopted. Second, to prove the convergence of tracking error and the system stability in both domains, a new prove method is proposed, in which the tracking error is summed over the entire time domain and the average dwell condition is summed over the entire iteration domain. Finally, the feasibility of theoretical result is verified by simulation.(c) 2022 Elsevier Inc. All rights reserved.
Keyword ：
Asynchronous switching Asynchronous switching Event-triggered iterative learning control Event-triggered iterative learning control Switched systems Switched systems Time and iteration domains Time and iteration domains
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| GB/T 7714 | Qi, Yiwen , Qu, Ziyu , Yao, Zhaohui et al. Event-Triggered iterative learning control for asynchronously switched systems [J]. | APPLIED MATHEMATICS AND COMPUTATION , 2023 , 440 . |
| MLA | Qi, Yiwen et al. "Event-Triggered iterative learning control for asynchronously switched systems" . | APPLIED MATHEMATICS AND COMPUTATION 440 (2023) . |
| APA | Qi, Yiwen , Qu, Ziyu , Yao, Zhaohui , Zhao, Xiujuan , Tang, Yiwen . Event-Triggered iterative learning control for asynchronously switched systems . | APPLIED MATHEMATICS AND COMPUTATION , 2023 , 440 . |
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A high-precision variable-thrust control method based on real-time measurement of pintle displacement and closed-loop feedback control is proposed to solve the technical problems of deep throttling variable-thrust regulation and control of pintle liquid rocket engines (LRE). By optimizing the system structure and control parameters, the closed-loop control of displacement with high precision and a fast response under a wide range of variable thrust can be realized, and thus the large-range, fast-response, and high-precision control of the chamber pressure, equivalent to thrust, can be indirectly realized. The chamber pressure response time is not more than 0.3 s, the overshoot is not more than +/- 3%, and the pulsation amplitude is not more than +/- 5%, which can meet the technical requirements of the large-range thrust adjustment and control of variable-thrust LRE of reusable launch rockets. The proposed variable-thrust LRE thrust control system is simple, reliable, and easy to use and maintain, which solves the problem of the large range, high precision, and fast response of thrust adjustment and control. The proposed system can provide important technical support for carrier rocket recycling and launch cost reduction. This is the first time a closed-loop control method of displacement of an integrated gas generator/flow regulator to achieve a 5:1 large-range continuous-variable-thrust control for the LRE of a reusable launch rocket has been proposed.
Keyword ：
displacement closed-loop control displacement closed-loop control gas generator gas generator integrated flow regulator integrated flow regulator reusable launch rocket reusable launch rocket thrust control thrust control variable-thrust liquid rocket engine variable-thrust liquid rocket engine
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| GB/T 7714 | Yao, Zhaohui , Qi, Yiwen , Bao, Wen et al. Thrust Control Method and Technology of Variable-Thrust Liquid Engine for Reusable Launch Rocket [J]. | AEROSPACE , 2023 , 10 (1) . |
| MLA | Yao, Zhaohui et al. "Thrust Control Method and Technology of Variable-Thrust Liquid Engine for Reusable Launch Rocket" . | AEROSPACE 10 . 1 (2023) . |
| APA | Yao, Zhaohui , Qi, Yiwen , Bao, Wen , Zhang, Tianhong . Thrust Control Method and Technology of Variable-Thrust Liquid Engine for Reusable Launch Rocket . | AEROSPACE , 2023 , 10 (1) . |
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Networked switched quasi-linear parameter varying (LPV) systems can effectively describe the parameter degradation or perturbation of actual systems. For a quasi-LPV networked control system, it may be threatened by various attacks, and the communication barriers caused by attacks, delays, and triggers further make the scheduling between the controller and the system asynchronous. In this article, the event-triggered control for switched quasi-LPV system subject to denial-of-service attacks and scheduling asynchronization is concerned. Two event-triggering mechanisms are utilized to reasonably adjust the communication frequency of state and scheduling variables, which can reduce their transmission risk of being attacked. Under the influence of periodic and aperiodic DoS attacks, complete event-triggered control schemes for networked switched quasi-LPV system are given. Especially, a set of sufficient conditions for analysis and synthesis is presented, which solves the tricky problem of scheduling asynchronization. Finally, a numerical simulation and a switched RLC system example are given to verify the effectiveness of the proposed method.
Keyword ：
Control systems Control systems Delays Delays Denial-of-service attack Denial-of-service attack Denial-of-service (DoS) attacks Denial-of-service (DoS) attacks event-triggered control event-triggered control Linear matrix inequalities Linear matrix inequalities networked switched quasi-linear parameter varying (LPV) systems networked switched quasi-linear parameter varying (LPV) systems Scheduling Scheduling Switched systems Switched systems Switches Switches
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| GB/T 7714 | Qi, Yiwen , Tang, Yiwen , Zhao, Xudong et al. Dual Event-Triggered Control for Asynchronous Scheduling Parameter Varying Networked Switched Systems Under DoS Attacks [J]. | IEEE SYSTEMS JOURNAL , 2023 , 17 (4) : 5854-5865 . |
| MLA | Qi, Yiwen et al. "Dual Event-Triggered Control for Asynchronous Scheduling Parameter Varying Networked Switched Systems Under DoS Attacks" . | IEEE SYSTEMS JOURNAL 17 . 4 (2023) : 5854-5865 . |
| APA | Qi, Yiwen , Tang, Yiwen , Zhao, Xudong , Xing, Ning , Qiu, Jianbin . Dual Event-Triggered Control for Asynchronous Scheduling Parameter Varying Networked Switched Systems Under DoS Attacks . | IEEE SYSTEMS JOURNAL , 2023 , 17 (4) , 5854-5865 . |
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In this article, dual-domain triggered iterative learning control (ILC) is studied for networked switched systems against denial-of-service (DoS) attacks. Unlike existing research on ILC focusing only on updating between iterations, a novel dual-domain (time and iteration domains) triggered ILC is proposed. The updates between iterations and updates of network feedback information for each iteration on the time scale are performed, reducing the iteration steps and network data transmission frequency within each iteration. In each iteration, the system output is transmitted via a network, which is assumed to be vulnerable to DoS attacks. An attack detection mechanism and buffer-based compensation mechanism are proposed. Then, the boundedness of the iterative tracking error of the networked switched systems is ensured through a switching stability analysis based on the Lyapunov theory. Finally, the advantages of the proposed methods are substantiated by a simulation example consisting of three parts.
Keyword ：
attack compensation attack compensation denial-of-service (DoS) attacks denial-of-service (DoS) attacks dual-domain triggered iterative learning control (ILC) dual-domain triggered iterative learning control (ILC) Networked switched systems Networked switched systems
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| GB/T 7714 | Qi, Yiwen , Zhao, Xiujuan , Ahn, Choon Ki . Dual-Domain Triggered Iterative Learning Control for Networked Switched Systems Against Denial-of-Service Attacks [J]. | IEEE SYSTEMS JOURNAL , 2023 , 17 (2) : 3246-3257 . |
| MLA | Qi, Yiwen et al. "Dual-Domain Triggered Iterative Learning Control for Networked Switched Systems Against Denial-of-Service Attacks" . | IEEE SYSTEMS JOURNAL 17 . 2 (2023) : 3246-3257 . |
| APA | Qi, Yiwen , Zhao, Xiujuan , Ahn, Choon Ki . Dual-Domain Triggered Iterative Learning Control for Networked Switched Systems Against Denial-of-Service Attacks . | IEEE SYSTEMS JOURNAL , 2023 , 17 (2) , 3246-3257 . |
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We employ the adaptive dynamic programming (ADP) approach with a resilient event-triggering mechanism to handle the optimal control problems for a switched system, which is constrained by network resources and vulnerable to denial-of-service (DoS) attacks. The proposed approach is able to guarantee satisfactory system performances even when the data transmission is interrupted intermittently. A key step is to develop an updating method for the neural network (NN) weights of ADP in response to the triggered events and experienced attacks. The consideration of lowering computational cost and mitigating attack influences is integrated into the design of the system switching law for which a cost function is utilized to reduce unnecessary switching. In fact, the optimal control policy and optimal switching policy can be obtained as the outcome of the converging ADP iterative process. Furthermore, the uniformly ultimately boundedness of system state and NN weights is proven; more importantly, we illustrate in the dynamical processes, how the event-triggering, system switching, and DoS attacks affect one another. Finally, a numerical example is provided to verify the effectiveness of the proposed method.
Keyword ：
Adaptive learning security control Adaptive learning security control Artificial neural networks Artificial neural networks Control systems Control systems Cost function Cost function denial-of-service (DoS) attacks denial-of-service (DoS) attacks Iterative methods Iterative methods networked switched systems (NSSs) networked switched systems (NSSs) Optimal control Optimal control resilient event triggering resilient event triggering Switched systems Switched systems Switches Switches
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| GB/T 7714 | Qi, Yiwen , Geng, Honglin , Xing, Ning . Adaptive Learning Security Control for Networked Switched Systems Subject to Resource Constraints and Attacks [J]. | IEEE SYSTEMS JOURNAL , 2023 , 17 (4) : 6069-6080 . |
| MLA | Qi, Yiwen et al. "Adaptive Learning Security Control for Networked Switched Systems Subject to Resource Constraints and Attacks" . | IEEE SYSTEMS JOURNAL 17 . 4 (2023) : 6069-6080 . |
| APA | Qi, Yiwen , Geng, Honglin , Xing, Ning . Adaptive Learning Security Control for Networked Switched Systems Subject to Resource Constraints and Attacks . | IEEE SYSTEMS JOURNAL , 2023 , 17 (4) , 6069-6080 . |
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Uncertainty and disturbance are always the first issues to deal with in any networked system. Considering these factors, the active disturbance rejection control (ADRC) for networked switched systems (NSSs) with decentralized event-triggered communication was investigated in this study. This is the first time a comprehensive analysis and synthesis method for the ADRC of NSSs has been proposed. The technical contribution is mainly divided into two categories. On the one hand, a novel parameter-dependent switching constraint is proposed, which solves the problem of ADRC-based switching law construction and settles the complex coupling between switching, event-triggering, and ADRC components. On the other hand, triggering the output of linear extended state observer (LESO) rather than its input can result in a more accurate estimation, while reasonably configuring network resources. Accordingly, a new tight bound of the high gain adjustment parameter of the observer was obtained. In addition, the stability analysis and state convergence region calculations for switched ADRC systems are given. Finally, the effectiveness of the proposal is demonstrated by simulation.
Keyword ：
Active disturbance rejection control (ADRC) Active disturbance rejection control (ADRC) ADRC-based switching law ADRC-based switching law linear extended state observer (LESO)-based event-triggering scheme linear extended state observer (LESO)-based event-triggering scheme networked switched systems (NSSs) networked switched systems (NSSs)
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| GB/T 7714 | Qi, Yiwen , Zhang, Simeng , Ahn, Choon Ki . Active Disturbance Rejection Control for Networked Switched Nonlinear Systems With Decentralized Event-Triggered Communication [J]. | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2023 , 53 (6) : 3553-3565 . |
| MLA | Qi, Yiwen et al. "Active Disturbance Rejection Control for Networked Switched Nonlinear Systems With Decentralized Event-Triggered Communication" . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 53 . 6 (2023) : 3553-3565 . |
| APA | Qi, Yiwen , Zhang, Simeng , Ahn, Choon Ki . Active Disturbance Rejection Control for Networked Switched Nonlinear Systems With Decentralized Event-Triggered Communication . | IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS , 2023 , 53 (6) , 3553-3565 . |
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