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作者：Li, Sen; Shetty, Akhil; Poolla, Kameshwar; Varaiya, Pravin
作者单位：Hong Kong University of Science & Technology; University of California System; University of California Berkeley
摘要：In this article, we study the problem of procuring diverse resources in a forward market to cover a set E of uncertain demand signals e. We consider two scenarios: 1) e is revealed all at once by an oracle and 2) e reveals itself causally. Each scenario induces an optimal procurement cost. The ratio between these two costs is defined as the price of causality. It captures the additional cost of not knowing the future values of the uncertain demand signal. We consider two application contexts: ...
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作者：Bako, Laurent
作者单位：Universite Claude Bernard Lyon 1; Ecole Centrale de Lyon; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Engineering & Systems Sciences (INSIS); Institut National des Sciences Appliquees de Lyon - INSA Lyon
摘要：This article considers a particular parameter estimator for switched systems and analyzes its properties. The estimator in question is defined as the map from the dataset to the solution set of an optimization problem where the to-be-optimized cost function is a sum of pointwise infima over a finite set of subfunctions. This is a hard nonconvex problem. The article studies some fundamental properties of this problem such as uniqueness of the solution or boundedness of the estimation error rega...
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作者：Khong, Sei Zhen; Kao, Chung-Yao
作者单位：University of Hong Kong; National Sun Yat Sen University
摘要：A collection of converse theorems for integral quadratic constraints (IQCs) is established for linear time-invariant systems. It is demonstrated that when a system interconnected in feedback with an arbitrary system satisfying an IQC is stable, then the given system must necessarily satisfy the complementary IQC. These theorems are specialized to derive multiple versions of converse passivity results. They cover standard notions of strict passivity as well as passivity indices that characteriz...
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作者：Guo, Jin; Wang, Xuebin; Xue, Wenchao; Zhao, Yanlong
作者单位：University of Science & Technology Beijing; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
摘要：With the popularization and application of cyber-physical systems in many industry and infrastructure fields, the security issue has been quite an important concern. This article addresses the defense problem against the data tampering attack under the framework of system identification with binary-valued observations. From the perspective of the attacker, it is shown that how to achieve the maximum hit effect with the least attack energy. From the perspective of the defender, a so-called comp...
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作者：Li, Yifeng; Zhu, Jiandong; Li, Bowen; Liu, Yang; Lu, Jianquan
作者单位：Nanjing Normal University; Southeast University - China; Chengdu University; Zhejiang Normal University; Southeast University - China
摘要：For a Boolean network with disturbances and outputs, a necessary and sufficient graphic condition for the original disturbance decoupling is proposed, and it reveals that the outputs are unaffected by the disturbances if and only if the vertex-colored state transition graph has a concolorous perfect vertex partition (CP-VP). In addition, if the CP-VP is an equal partition, a corresponding system decomposition is implemented. Furthermore, an algorithm is designed to check the existence of a CP-...
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作者：Zhang, Zhirong; Song, Yongduan; Wen, Changyun
作者单位：Chongqing University; Chongqing University; Nanyang Technological University
摘要：In this article, we present an adaptive decentralized control scheme for a class of interconnected uncertain systems with subsystems having different yet unknown control directions and involving static nonlinear interactions as well as input and output dynamic interactions. A new form of K-filters is designed for each subsystem, and only local information is employed to generate control signals. A new Nussbaum-type function is developed with a key property that allows for the quantification of...
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作者：Jiang, Yan; Pates, Richard; Mallada, Enrique
作者单位：Johns Hopkins University; Lund University
摘要：A widely embraced approach to mitigate the dynamic degradation in low-inertia power systems is to mimic generation response using grid-connected inverters to restore the stiffness of the grid. In this article, we seek to challenge this approach and advocate for a principled design based on a systematic analysis of the performance trade-offs of inverter-based frequency control. With this aim, we perform a qualitative and quantitative study comparing the effect of conventional control strategies...
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作者：Strijbosch, Nard; Dullerud, Geir E.; Teel, Andrew R.; Heemels, W. P. M. H.
作者单位：Eindhoven University of Technology; University of Illinois System; University of Illinois Urbana-Champaign; University of California System; University of California Santa Barbara
摘要：We analyze the stability, and L-2-gain properties of a class of hybrid systems that exhibit time-varying linear flow dynamics, periodic time-triggered jumps, and arbitrary nonlinear jump maps. This class of hybrid systems encompasses periodic event-triggered control, self-triggered control, and networked control systems including time-varying communication delays. New notions on the stability, and contractivity (L-2-gain strictly smaller than 1) from the beginning of the flow, and from the end...
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作者：Cao, Xuanyu; Zhang, Junshan; Poor, H. Vincent; Tian, Zhi
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; Arizona State University; Arizona State University-Tempe; Princeton University; George Mason University
摘要：Due to its broad applicability in machine learning, resource allocation, and control, the alternating direction method of multipliers (ADMM) has been extensively studied in the literature. The message exchange of the ADMM in multiagent optimization may reveal sensitive information of agents, which can be overheard by malicious attackers. This drawback hinders the application of the ADMM to privacy-aware multiagent systems. In this article, we consider consensus optimization with regularization...
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作者：Cotorruelo, Andres; Ramirez, Daniel R.; Limon, Daniel; Garone, Emanuele
作者单位：Universite Libre de Bruxelles; University of Sevilla
摘要：This article presents an extension to the nonlinear model predictive control (MPC) for tracking scheme able to guarantee convergence even in cases of nonconvex output admissible sets. This is achieved by incorporating a convexifying homeomorphism in the optimization problem, allowing it to be solved in the convex space. A novel class of nonconvex sets is also defined for which a systematic procedure to construct a convexifying homeomorphism is provided. This homeomorphism is then embedded in t...
