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作者：Ferrari, Riccardo M. G.; Teixeira, Andre M. H.
作者单位：Delft University of Technology; Uppsala University
摘要：This article addresses the detection of stealthy attacks on sensor measurements. Inspired in authentication schemes with weak cryptographic guarantees, we propose a watermarking approach to validate the data and its source. In particular, we propose a multiplicative scheme, where the sensor outputs are watermarked by a bank of filters, then transmitted through the possibly unsecured communication network. The original measurement data are finally reconstructed by a watermark remover. To allow ...
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作者：Jacquot, Paulin; Wan, Cheng; Beaude, Olivier; Oudjane, Nadia
作者单位：Inria; Centre National de la Recherche Scientifique (CNRS); Institut Polytechnique de Paris; Ecole Polytechnique
摘要：Aggregative games have many industrial applications, and computing an equilibrium in those games is challenging when the number of players is large. In the framework of atomic aggregative games with coupling constraints, we show that variational Nash equilibria of a large aggregative game can be approximated by a Wardrop equilibrium of an auxiliary population game of smaller dimension. Each population of this auxiliary game corresponds to a group of atomic players of the initial large game. Th...
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作者：Liu, Yong-Hua; Su, Chun-Yi; Li, Hongyi
作者单位：Guangdong University of Technology
摘要：This article considers the problem of output feedback funnel control for a class of uncertain nonlinear systems with arbitrary known relative degree. By utilizing the funnel control approach with a barrier Lyapunov function, a novel adaptive output feedback controller is constructed recursively, which accomplishes the output tracking with prescribed transient behavior. The developed control scheme features that the precise knowledge of system nonlinearities, including generally required boundi...
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作者：Marcucci, Tobia; Tedrake, Russ
作者单位：Massachusetts Institute of Technology (MIT)
摘要：In hybrid model predictive control (MPC), a mixed-integer quadratic program (MIQP) is solved at each sampling time to compute the optimal control action. Although these optimizations are generally very demanding, in MPC, we expect consecutive problem instances to be nearly identical. This article addresses the question of how computations performed at one time step can be reused to accelerate (warm start) the solution of subsequent MIQPs. Reoptimization is not a rare practice in integer progra...
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作者：Zhu, Guanghui; Feng, Lei; Li, Zhiwu; Wu, Naiqi
作者单位：Macau University of Science & Technology; Macau University of Science & Technology; Centre National de la Recherche Scientifique (CNRS); Aix-Marseille Universite; Royal Institute of Technology; Xidian University; Guangdong University of Technology
摘要：In this article, we present a fault diagnosis approach for discrete event systems using labeled Petri nets. In contrast to the existing works, a new fault class containing all the fault transitions is additionally introduced in the diagnosis function, leading to a more informative and precise diagnosis result. An integer linear programming (ILP) problem is built according to an observed word. By specifying different objective functions to the ILP problem, the diagnosis result is obtained witho...
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作者：Koppel, Alec; Warnell, Garrett; Stump, Ethan; Stone, Peter; Ribeiro, Alejandro
作者单位：United States Department of Defense; United States Army; US Army Research, Development & Engineering Command (RDECOM); US Army Research Laboratory (ARL); University of Texas System; University of Texas Austin; University of Pennsylvania
摘要：We consider policy evaluation in infinite-horizon discounted Markov decision problems with continuous compact state and action spaces. We reformulate this task as a compositional stochastic program with a function-valued decision variable that belongs to a reproducing kernel Hilbert space (RKHS). We approach this problem via a new functional generalization of stochastic quasi-gradient methods operating in tandem with stochastic sparse subspace projections. The result is an extension of gradien...
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作者：Wang, Yuan; Liu, Yungang
作者单位：Shandong University
摘要：This article investigates global practical output tracking via adaptive output feedback for a class of uncertain nonlinear systems. Remarkably, the control problem under investigation is in the context of unknown control directions and output feedback, which severely restricts the system nonlinearities. Nevertheless, the growth on the unknown system nonlinearities in this article is extended from polynomial (of output) to arbitrary function, and meanwhile no further a priori information is req...
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作者：Bu, Jingjing; Mesbahi, Afshin; Mesbahi, Mehran
作者单位：University of Washington; University of Washington Seattle
摘要：This article presents a fairly complete account on various topological and metrical aspects of feedback stabilization for single-input single-output (SISO) continuous and discrete time linear time-invariant (LTI) systems. In particular, we prove that the set of stabilizing output feedback gains for a SISO system with n states have at most inverted right perpendicularn 2inverted left perpendicular connected components. Furthermore, our analysis yields an algorithm for determining intervals of s...
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作者：Assran, Mahmoud S.; Rabbat, Michael G.
作者单位：Facebook Inc; McGill University
摘要：We consider a multiagent framework for distributed optimization where each agent has access to a local smooth strongly convex function, and the collective goal is to achieve consensus on the parameters that minimize the sum of the agents' local functions. We propose an algorithm wherein each agent operates asynchronously and independently of the other agents. When the local functions are strongly convex with Lipschitz-continuous gradients, we show that the iterates at each agent converge to a ...
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作者：Chowdhury, Dhrubajit; Khalil, Hassan K.
作者单位：Michigan State University
摘要：In this article, we consider the synchronization problem in a network of nonlinear multiagent systems having the same relative degree r. The agents do not have access to their state or output and only have relative output information from their neighbors. The controller structure is decentralized in nature and, therefore, depends only on the relative information available to it. The agent dynamics are transformed into relative dynamics by a change of coordinates where the agent dynamics are co...
