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作者:Verhoek, Chris; Berberich, Julian; Haesaert, Sofie; Allgoewer, Frank; Toth, Roland
作者单位:Eindhoven University of Technology; University of Stuttgart; HUN-REN; HUN-REN Institute for Computer Science & Control
摘要:this article, we derive direct data-driven dissipativity analysis methods for linear parameter-varying (LPV) systems using a single sequence of input- scheduling-output data. By means of constructing a semidefinite program subject to linear matrix inequality constraints based on this data-dictionary, direct data- driven verification of ( Q, S, R )-type of dissipativity properties of the data-generating LPV system is achieved. Multiple implementation methods are proposed to achieve efficient co...
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作者:Breiten, Tobias; Hinsen, Dorothea; Unger, Benjamin
作者单位:Technical University of Berlin; University of Stuttgart
摘要:The framework of port-Hamiltonian (pH) systems is a powerful and broadly applicable modeling paradigm. In this article, we extend the scope of pH systems to time-delay systems. Our definition of a delay pH system is motivated by investigating the Kalman-Yakubovich-Popov inequality on the corresponding infinite-dimensional operator equation. Moreover, we show that delay pH systems are passive and closed under interconnection. We describe an explicit way to construct a Lyapunov-Krasovskii functi...
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作者:Cui, Yukang; Wu, Zongze; Gong, Xin; Basin, Michael V.; Huang, Tingwen
作者单位:Shenzhen University; Southeast University - China; Ningbo University of Technology; Universidad Autonoma de Nuevo Leon; Shenzhen University of Advanced Technology
摘要:This note studies the stability problem of nonlinear positive differential-difference equations with unbounded time-varying delays. Under assumptions on the nonlinear vector fields, such as being homogeneous, cooperative, and order-preserving, conditions are derived for positivity and asymptotic stability of nonlinear differential-difference equations, which include the corresponding linear system as a special case. This work features three main contributions: first, a necessary and sufficient...
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作者:Saoud, Adnane; Maghenem, Mohamed; Loria, Antonio; Sanfelice, Ricardo G.
作者单位:Mohammed VI Polytechnic University; Communaute Universite Grenoble Alpes; Institut National Polytechnique de Grenoble; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); Communaute Universite Grenoble Alpes; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; University of California System; University of California Santa Cruz
摘要:In this article, we propose a framework of stability analysis for a class of linear nonautonomous hybrid systems, with solutions evolving in continuous time governed by an ordinary differential equation and undergoing instantaneous changes governed by a difference equation. Furthermore, the jumps may also be triggered by exogeneous hybrid signals. The proposed framework builds upon a generalization of notions of persistency of excitation (PE) and uniform observability (UO), which we redefine t...
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作者:Schlotterbeck, Constanza; Gallegos, Javier A.; Teel, Andrew R.; Nunez, Felipe
作者单位:Pontificia Universidad Catolica de Chile; University of California System; University of California Santa Barbara
摘要:Stability guarantees in networked control systems (NCSs) have traditionally been addressed in the deterministic setting using the concepts of maximum allowable transmit interval and maximum allowable delay (MAD). Motivated by the widespread use of nondeterministic networks in modern industrial NCSs, this note aims to extend the analysis to the stochastic setting by considering a setup where the NCS faces stochastic communication delays, which take values over the MAD with positive probability....
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作者:Liu, Yuxuan; Ye, Maojiao; Ding, Lei; Xie, Lihua; Xu, Shengyuan
作者单位:Nanjing University of Science & Technology; Nanjing University of Posts & Telecommunications; Nanjing University of Posts & Telecommunications; Nanjing University of Posts & Telecommunications; Nanyang Technological University
摘要:This article considers the problem of online resource allocation in an open network where the engaged agents are allowed to join and leave freely. To deal with network openness, each agent possesses two auxiliary variables, utilized to store the sum of gradients and record the number of stored gradients, respectively. Based on the stored information and primal-dual techniques, a distributed online optimization algorithm is constructed for agents to achieve the minimization of their total cost ...
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作者:Moon, Jun; Basar, Tamer
作者单位:Hanyang University; University of Illinois System; University of Illinois Urbana-Champaign
摘要:We consider the partially observed linear-quadratic (LQ) optimal control problem for mean-field type stochastic systems driven by Brownian motion. The control does not have access to complete state information, but only to noisy state information from the (stochastic) observation model. The dynamics and observation model as well as the objective functional include the expected values of state and control variables, known as the mean-field variables. The main result is the separation between op...
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作者:Zhu, Bohao; Lam, James; Shen, Jun; Cui, Yukang; Lu, Xiujuan; Kwok, Ka-Wai
作者单位:University of Hong Kong; Nanjing University of Aeronautics & Astronautics; Shenzhen University; Chinese University of Hong Kong
摘要:This article investigates the input-output gain of linear discrete-time cone-preserving systems. The cone linear absolute-norm and cone max-norm, which are applied to describe input-output gains of cone-preserving systems, are introduced. Subsequently, by utilizing the property of cone-preserving systems, several necessary and sufficient conditions to characterize input-output gains of the system in terms of cone-induced norms are provided. The results indicate that input-output gains of cone-...
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作者:Wu, Jenq-Lang
作者单位:National Taiwan Ocean University
摘要:In this article, the control synthesis of discrete-time nonlinear control systems with state and input constraints is considered. Functional inequalities are used to express these restrictions. Based on the barrier method, an online nonconvex optimization problem is solved to obtain a feasible control signal at each time step. The convergence of the solution algorithm is demonstrated. Results for a special case in which the constraints are in quadratic forms are presented. The necessary condit...
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作者:Chekan, Jafar Abbaszadeh; Langbort, Cedric
作者单位:University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign
摘要:Overactuated systems often make it possible to achieve specific performances by switching between different subsets of actuators. However, when the system parameters are unknown, transferring authority to different subsets of actuators is challenging due to stability and performance efficiency concerns. This article presents an efficient algorithm to tackle the so-called learn and control while switching between different actuating modes problem in the linear quadratic setting. Our proposed st...