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作者：Bhattacharjee, Diganta; Subbarao, Kamesh
作者单位：University of Texas System; University of Texas Arlington
摘要：In this article, a recursive set-membership filtering algorithm for discrete-time nonlinear dynamical systems subject to unknown but bounded process and measurement noises is proposed. The nonlinear dynamics are represented in a pseudolinear form using the state-dependent coefficient (SDC) parameterization. Matrix Taylor expansions are utilized to expand the state-dependent matrices about the state estimates. Upper bounds on the norms of remainders in the matrix Taylor expansions are calculate...
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作者：Cheng, Xiaodong; Shi, Shengling; Van den Hof, Paul M. J.
作者单位：Eindhoven University of Technology; University of Cambridge
摘要：A recent research direction in data-driven modeling is the identification of dynamic networks, in which measured vertex signals are interconnected by dynamic edges represented by causal linear transfer functions. The major question addressed in this article is where to allocate external excitation signals such that a network model set becomes generically identifiable when measuring all vertex signals. To tackle this synthesis problem, a novel graph structure, referred to as directed pseudotree...
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作者：Liu, Tengfei; Qin, Zhengyan; Hong, Yiguang; Zhong-Ping Jiang
作者单位：Northeastern University - China; Tongji University; Tongji University
摘要：This article studies the distributed optimal output agreement problem for multiagent systems described by uncertain nonlinear models. By using the partial information of an objective function, the design aims to steer the outputs of the agents to an agreement on the optimal solution to the objective function. To solve this problem, this article introduces distributed coordinators to calculate the desired outputs, and designs reference-tracking controllers for the agents to follow the desired o...
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作者：Romvary, Jordan J.; Ferro, Giulio; Haider, Rabab; Annaswamy, Anuradha M.
作者单位：The Charles Stark Draper Laboratory, Inc.; University of Genoa; Massachusetts Institute of Technology (MIT)
摘要：In this article, we present a unified framework for distributed convex optimization using an algorithm called proximal atomic coordination (PAC). PAC is based on the prox-linear approach and we prove that it achieves convergence in both objective values and distance to feasibility with rate o(1/tau), where tau is the number of algorithmic iterations. We further prove that linear convergence is achieved when the objective functions are strongly convex and strongly smooth with condition number k...
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作者：Heath, William Paul; Carrasco, Joaquin; Altshuller, Dmitry A.
作者单位：University of Manchester; Dassault Systemes
摘要：We consider Lurye (sometimes written Lur'e) systems, whose nonlinear operator is characterized by a possibly multivalued nonlinearity that is bounded above and below by monotone functions. Stability can be established using a subclass of the Zames-Falb multipliers. The result generalizes similar approaches in the literature. Appropriate multipliers can be found using convex searches. Because the multipliers can be used for multivalued nonlinearities, they can be applied after loop transformati...
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作者：Smith, Kevin D.; Jafarpour, Saber; Bullo, Francesco
作者单位：University of California System; University of California Santa Barbara
摘要：Due to the rise of distributed energy resources, the control of networks of grid-forming inverters is now a pressing issue for the power system operation. Droop control is a popular control strategy in the literature for frequency control of these inverters. In this article, we analyze transient stability in droop-controlled inverter networks that are subject to multiple operating constraints. Using a physically meaningful Lyapunov-like function, we provide two sets of criteria (one mathematic...
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作者：Ren, Qifeng; Kao, Yonggui; Wang, Changhong; Xia, Hongwei; Wang, Xiaoli
作者单位：Ocean University of China; Harbin Institute of Technology; Harbin Institute of Technology; Harbin Institute of Technology
摘要：Dynamic characteristics of sliding variables for the generalized discrete reaching law are investigated, such as phenomena of reaching condition and ultimate boundedness of sliding variables. The discussed reaching law is relatively more general than some others in the literature, because it contains a wider range of decay factors, which could be positive or negative. First, a sufficient and necessary condition is obtained ensuring that the generalized reaching law satisfies the reaching condi...
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作者：Xu, Yuhang; Yang, Hao; Jiang, Bin; Polycarpou, Marios M.
作者单位：Nanjing University of Aeronautics & Astronautics; University of Cyprus; University of Cyprus
摘要：This article addresses the distributed optimal fault estimation (FE) and fault-tolerant control (FTC) issues under the bidirectional interaction between a possibly faulty interconnected system and its associated diagnostic interconnected observer. The proposed methodology is based on a framework, named Stackelberg differential graphical game, in which the interconnected observer and its corresponding interconnected system are formulated as two graphical games, and they, respectively, play the ...
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作者：Di Ferdinando, Mario; Pepe, Pierdomenico; Di Gennaro, Stefano
作者单位：University of L'Aquila; University of L'Aquila
摘要：In this article, a new methodology for the design of sampled-data dynamic output feedback stabilizers, by means of Lyapunov-Krasovskii functionals, for nonlinear systems with state-delays, is presented. The notion of dynamic output steepest descent feedback (DOSDF), induced by a general class of Lyapunov-Krasovskii functionals, is introduced. Then, it is shown that DOSDFs, no matter whether continuous or not, are stabilizers in the sample-and-hold sense. The main advantage of the proposed meth...
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作者：Zhang, Boyang; Gavin, Henri P.
作者单位：Duke University
摘要：Multiagent navigation systems present opportunities for many applications due to their agility and cooperation. In any multiagent navigation system, it is critical that actual interagent collisions are strictly prevented. In this article, we present a solution to the 2-D multiagent navigation problem with collision avoidance. Our solution to this problem is based on a novel extension to Gauss's principle of least constraint (GPLC), in which a fixed set of strict equality constraints is replace...
