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作者：Liu, Yang; Xia, Zicong; Gui, Weihua
作者单位：Zhejiang Normal University; Zhejiang Normal University; Central South University
摘要：In this study, we propose a predefined-time multi-agent approach for multiobjective optimization. Predefined-time optimization is an optimization approach that can converge to a state that is extremely close to an optimal solution at a given time. A time-base generator is derived and applied to the optimization approaches for achieving predefined-time optimization. The multi-objective optimization problem is reformulated as a distributed optimization problem and, thus, solved in a private and ...
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作者：Yang, Hongjiu; Cao, Jiang; Yuan, Yuan; Wang, Jin
作者单位：Tianjin University; Northwestern Polytechnical University
摘要：To investigate modulus consensus on multiple interdependent topics with heterogeneous logical relationships, a comprehensive opinion dynamics model is proposed in a time-varying influence network. There exist cooperative and antagonistic interpersonal interactions in the time-varying influence network. A logic matrix is designed to describe the heterogeneous logical relationships within multiple interdependent topics. Based on graph theory, both convergence and modulus consensus are shown for ...
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作者：Li, Xiaoyan; Hadjicostis, Christoforos N.; Li, Zhiwu
作者单位：University of Cyprus; Xidian University; Macau University of Science & Technology
摘要：Opacity is a confidentiality property capturing the fact that certain secret behavior of a system cannot be revealed under any system evolution. Current-state opacity can be enforced by using an extended insertion mechanism, which is capable of inserting fake symbols before and after an actual output, in real time as the system evolves. This article studies the enforcement of current-state opacity for systems modeled by finite state automata using an extended insertion strategy under constrain...
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作者：Polyakov, Andrey; Krstic, Miroslav
作者单位：Inria; University of California System; University of California San Diego
摘要：Nonovershooting stabilization is a form of safe control where the setpoint chosen by the user is at the boundary of the safe set. In this article, we develop homogeneous feedback laws for fixed-time nonovershooting stabilization for nonlinear systems that are input-output linearizable with a full relative degree, i.e., for systems that are diffeomorphically equivalent to the chain of integrators. These homogeneous feedback laws can also assume the secondary role of fixed-time safety filters, w...
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作者：Xiao, Feng; Wang, Long; Chen, Tongwen
作者单位：North China Electric Power University; North China Electric Power University; Peking University; University of Alberta
摘要：In this article, we focus on the stability of asynchronous sampled-data interconnected systems and the evaluation of how asynchronous sampling and time delays degrade the L-2 gains from exogenous inputs to controlled outputs. To judge the stability and evaluate the performance of systems, an integral approach is proposed and it combines a revised form of input-to-state stability Lyapunov conditions with an integral description of bounded measurement errors. Practical procedures for the applica...
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作者：Cheng, Xiaodong; Shi, Shengling; Lestas, Ioannis; Van den Hof, Paul M. J.
作者单位：University of Cambridge; Wageningen University & Research; Eindhoven University of Technology
摘要：This article considers dynamic networks where vertices and edges represent manifest signals and causal dependencies among the signals, respectively. We address the problem of how to determine if the dynamics of a network can be identified when only partial vertices are measured and excited. A necessary condition for network identifiability is presented, where the analysis is performed based on identifying the dependency of a set of rational functions from excited vertices to measured ones. Thi...
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作者：Kaldmae, Arvo; Bartosiewicz, Zbigniew; Kotta, Ulle; Wyrwas, Malgorzata
作者单位：Bialystok University of Technology; Tallinn University of Technology
摘要：The problem of finding a minimal realization of a single-input-single-output nonlinear retarded time-delay input-output equation with constant commensurable delays is addressed. First, an algorithm is given to find an observable realization of dimension n of a nth order input-output equation. Then, this algorithm is modified under two technical assumptions to find a realization of lower dimension, which is observable and accessible. It is shown that under the same technical assumptions an obse...
