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作者：Linsenmayer, Steffen; Hertneck, Michael; Allgower, Frank
作者单位：University of Stuttgart
摘要：This article considers the stabilization of linear control systems under weakly hard real-time (WHRT) constraints. In the context of networked control systems, such WHRT constraints allow us to specify packet loss properties of a communication network over windows of a given length, e.g., at least n consecutive transmissions in every window of m consecutive transmission attempts are successful. Time- and event-triggered stabilization results are derived. The control design exploits a graph tha...
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作者：Xu, Juanjuan; Zhang, Zhaorong; Wang, Wei
作者单位：Shandong University; University of Newcastle
摘要：In this article, we are concerned with the consensus problem of multiagent system where the channels from each agent's control input to the plant are fading nonidentically. Two problems have been extensively studied. One is the consentable problem when the current state information is available for the controller. The other is that the state information is delayed for the controller in which we propose a novel predictorlike control protocol. It is obtained that the multiagent system with syste...
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作者：Li, Haidong; Xu, Xiaoyun; Peng, Yijie; Chen, Chun-Hung
作者单位：Peking University; Ateneo de Manila University; Peking University; George Mason University
摘要：In this article, we consider the problem of selecting important nodes in a random network, where the nodes connect to each other randomly with certain transition probabilities. The node importance is characterized by the stationary probabilities of the corresponding nodes in a Markov chain defined over the network, as in Google's PageRank. Unlike a deterministic network, the transition probabilities in a random network are unknown but can be estimated by sampling. Under a Bayesian learning fra...
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作者：Saoud, Adnane; Girard, Antoine; Fribourg, Laurent
作者单位：Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS)
摘要：This article presents a symbolic control approach to the design of distributed safety controllers for a class of continuous-time nonlinear systems. More precisely, we consider systems made of components where each component is equipped with a sampled-data controller with its own sampling period, resulting globally in a distributed multiperiodic sampled-data system. Moreover, controllers receive partial information on the state of the other components. We propose a component-based approach to c...
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作者：Bernard, Pauline; Praly, Laurent
作者单位：Universite PSL; MINES ParisTech
摘要：We show that the pair (rotor position, resistance) of a nonsalient permanent magnet synchronous motor (PMSM) is not observable in the sensorless setting, namely, when only the electrical signals (voltages and intensities) are measured. However, if the rotation speed omega and the current in rotating frame i(d) are not constantly zero, we prove that there only exist a maximum of six indistinguishable solutions, the resistance being the root of a polynomial of degree six. Besides, in the particu...
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作者：Lee, Hanmin; Cichella, Venanzio; Hovakimyan, Naira
作者单位：University of Iowa; University of Illinois System; University of Illinois Urbana-Champaign
摘要：This article considers adaptive output-feedback control problem for nonsquare multi-input-multi-output systems (MIMO) with arbitrary relative degree. The proposed controller, based on the L-1 adaptive control architecture, is designed using the right interactor matrix and a suitably defined projection matrix. A state-output predictor, a low-pass filter, and adaptive laws are introduced that achieve output tracking of a desired reference signal. It is shown that the proposed control strategy gu...
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作者：Li, Kuo; Hua, Chang-Chun; You, Xiu; Guan, Xin-Ping
作者单位：Yanshan University; Shanxi University; Shanghai Jiao Tong University
摘要：This article focuses on distributed consensus control for nonlinear multiagent systems under directed graphs of dynamic frequency switches. The agents exchange information with each other through directed graphs that are switched based on a new general switching law. Not all graphs contain a spanning tree with the leader as the root. Under this condition, a novel distributed switched observer is constructed for each follower, and it can accurately estimate the state information of the leader b...
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作者：Li, Weijian; Zeng, Xianlin; Hong, Yiguang; Ji, Haibo
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; Beijing Institute of Technology; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS
摘要：This article aims at a distributed design to minimize the nuclear norm (the sum of all singular values) under linear equality constraints over a multiagent network. The problem is reformulated as a distributed trace norm minimization problem by introducing substitutional variables. A distributed projected primal-dual algorithm is proposed for the reformulation. It is shown that the algorithm converges to an optimal solution with a rate of O(1/t). Numerical simulations on three classical proble...
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作者：Wang, Jun; Ding, Baocang; Hu, Jianchen
作者单位：Xi'an Jiaotong University
摘要：This article considers security control under the network environment for a system with deception attacks, polytopic uncertainty, and persistent bounded disturbance. Since the state is immeasurable and the physical constraint is considered, the output feedback robust model predictive control (MPC) is utilized. The previous results on the output feedback robust MPC are extended to address the deception attacks. The mean-square quadratic boundedness is defined in order to characterize the closed...
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作者：Alseidi, Rola; Margaliot, Michael; Garloff, Juergen
作者单位：University of Konstanz; Tel Aviv University; HTWG Hochschule Konstanz University of Applied Sciences
摘要：Positive systems play an important role in systems and control theory and have found many applications in multiagent systems, neural networks, systems biology, and more. Positive systems map the nonnegative orthant to itself (and also the nonpositive orthant to itself). In other words, they map the set of vectors with zero sign variations to itself. In this article, discrete-time linear systems that map the set of vectors with up to k - 1 sign variations to itself are introduced. For the speci...
