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作者：Lu, Jieying; Li, Junhui; Su, Weizhou
作者单位：South China University of Technology; South China University of Technology; Peking University
摘要：This work mainly investigates the mean-square stability for a single-input single-output networked linear feedback system. The control signal in the networked system is transmitted over an unreliable channel with data transmission delays and packet dropouts. The transmission delays and packet dropouts are modeled by an independent and identically distributed random process with a known probability mass function. At the channel terminal, a linear receiving strategy is adopted. Based on the unit...
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作者：Zhou, Shijie; Yang, Luan; Qian, Xuzhe; Lin, Wei
作者单位：Fudan University; Fudan University; Fudan University; Fudan University
摘要：Investigating network stability and synchronization of multiagent systems (MASs) with time delays is crucial in real-world applications. This often involves solving transcendental characteristic equations (TCEs) from system linearization. While stability results for TCEs with real-valued coefficients induced by symmetric networks are well-studied, there is a gap for complex-valued coefficients arising from asymmetric networks. To bridge this gap, we propose a geometric approach by studying sta...
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作者：Xu, Yuchun; Zhang, Yanjun; Zhang, Ji-Feng
作者单位：Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Beijing Institute of Technology; Beijing Institute of Technology; Zhongyuan University of Technology
摘要：Dealing with the uncertain high-frequency gain matrix, denoted as K-p, is a fundamental problem in multivariable adaptive control systems. In this article, we propose a new solution for parameter estimation and adaptive control for a general class of multi-input-multi-output discrete-time linear time-invariant systems. The proposed scheme does not require any prior knowledge of the sign or bound information of K-p, and thus, significantly relaxes the design conditions in traditional multivaria...
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作者：Chen, Yan; Fradkov, Alexander L.; Fu, Keli; Fu, Xiaozheng; Li, Tao
作者单位：East China Normal University
摘要：Motivated by distributed statistical learning over uncertain communication networks, we study distributed stochastic optimization by networked nodes to cooperatively minimize a sum of convex cost functions. The network is modeled by a sequence of time-varying random digraphs with each node representing a local optimizer and each edge representing a communication link. In this article, we consider the distributed subgradient optimization algorithm with noisy measurements of local cost functions...
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作者：Jiang, Yao-Lin; Zhang, Guo-Yun
作者单位：Xi'an Jiaotong University
摘要：Research on nonlinear model order reduction has revealed that as nonlinearity increases, the subspaces capturing dominant information require more complex bases. The complexity is influenced by two main factors: coefficients and approximation criteria. On one hand, it is affected by the characteristics of all coefficients. Therefore, we begin by introducing a generalized Gramian-based method for estimating eigenvalue decay, which demonstrates the factors on the reduced order. On the other hand...
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作者：Paarporn, Keith; Chandan, Rahul; Alizadeh, Mahnoosh; Marden, Jason R.
作者单位：University of Colorado System; University of Colorado at Colorado Springs; University of California System; University of California Santa Barbara
摘要：In this article, we consider incomplete and asymmetric information formulations of the General Lotto game, which describes two opposing players that strategically allocate limited resources over multiple contests. In particular, we consider scenarios where one of the player's resource budget is common knowledge while the other player's is private. Our main contribution provides complete equilibrium characterizations in the scenario where the private resource budget is drawn from a Bernoulli di...
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作者：Xie, Gang; Tong, Yin; Wang, Xiaomin; Seatzu, Carla
作者单位：Southwest Jiaotong University; University of Cagliari
摘要：This article studies the supervisory control problem (SCP) of discrete-event systems under sensor attacks. The plant is modeled with a labeled Petri net (LPN) and the attacker has the ability to replace and erase the sensor readings in the communication channel. Our goal is to synthesize a maximally permissive and resilient supervisor for the LPN such that the controlled system satisfies the safety specification under attack. Given a set of safe markings, the basis reachability graph (BRG) for...
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作者：Fauser, Moritz; Zhang, Ping
摘要：Recently, the so-called resilient homomorphic encryption (RHE) scheme has been proposed by Fauser and Zhang (2021). Different from the existing homomorphic encryption schemes, the RHE scheme is able to neutralize the effect of an attack injected into the ciphertexts. Thus, a control system can still operate even if an attack takes place. In this article, the RHE scheme is further developed so that it can not only neutralize additive attacks but also satisfy the security requirement of indistin...
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作者：Liu, Siyuan; Yin, Xiang; Dimarogonas, Dimos V.; Zamani, Majid
作者单位：Royal Institute of Technology; Shanghai Jiao Tong University; University of Colorado System; University of Colorado Boulder; University of Munich
摘要：This article investigates an important class of information-flow security property called opacity for stochastic control systems. Opacity captures whether a system's secret behavior (a subset of the system's behavior that is considered to be critical) can be kept from outside observers. Existing works on opacity for control systems only provide a binary characterization of the system's security level by determining whether the system is opaque or not. In this work, we introduce a quantifiable ...
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作者：Xu, Jiapeng; Chen, Xiang; Tan, Ying; Zhou, Kemin
作者单位：University of Windsor; University of Melbourne; Nanjing University
摘要：This article proposes a novel multiobjective control framework for linear time-invariant systems in which performance and robustness can be achieved in a complementary way instead of a tradeoff. In particular, a state-space solution is first established for a new stabilizing control structure consisting of two independently designed controllers coordinated with a Youla-type operator Q. It is then shown by performance analysis that these two independently designed controllers operate in a natur...
