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作者：Hou, Huazhou; Yu, Xinghuo; Fu, Zao
作者单位：Southeast University - China; Royal Melbourne Institute of Technology (RMIT); Southeast University - China
摘要：A novel sliding mode control design method is developed to address the robust stabilization problem for uncertain time-varying networked control systems subject to state delay, which utilizes auxiliary matrices to avoid the difficulties of finding quadratic Lyapunov functions and solving the linear matrix inequalities. By embedding the original system into a higher dimensional system, simplified piecewise nonnegative functions can be used to analyze the system. Stability criteria are obtained ...
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作者：Liu, Jason J. R.; Yang, Nachuan; Kwok, Ka-Wai; Lam, James
作者单位：University of Hong Kong; Hong Kong University of Science & Technology
摘要：This technical note investigates the positive consensus problem of multiagent systems with directed communication topologies, where all the agents have identical continuous-time positive linear dynamics. Existing works of such a problem mainly focus on the case, where networked communication topologies are of either undirected and incomplete graphs, or strongly connected directed graphs. In contrast to them, we study this problem in which the communication topologies of the multiagent system a...
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作者：Xiao, Wei; Belta, Calin
作者单位：Boston University
摘要：We approach the problem of stabilizing a dynamical system while optimizing a cost and satisfying safety constraints and control limitations. For (nonlinear) affine control systems and quadratic costs, it has been shown that control barrier functions (CBFs) guaranteeing safety and control Lyapunov functions (CLFs) enforcing convergence can be used to (conservatively) reduce the optimal control problem to a sequence of quadratic programs (QPs). Existing works in this category have two main limit...
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作者：Soleymani, Touraj; Baras, John S.; Hirche, Sandra
作者单位：Royal Institute of Technology; University System of Maryland; University of Maryland College Park; Technical University of Munich
摘要：Although transmission of a data packet containing sensory information in a networked control system improves the quality of regulation, it has indeed a price from the communication perspective. It is, therefore, rational that such a data packet be transmitted only if it is valuable in the sense of a cost-benefit analysis. Yet, the fact is that little is known so far about this valuation of information and its connection with traditional event-triggered communication. In the present article, we...
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作者：Yu, Xian; Hou, Zhongsheng; Polycarpou, Marios M.
作者单位：The Chinese University of Hong Kong, Shenzhen; Qingdao University; University of Cyprus; University of Cyprus
摘要：In this article, a data-driven distributed leader-follower iterative learning consensus tracking control approach is proposed for unknown repetitive nonlinear nonaffine discrete-time multi-agent systems. The leader's command is only communicated to a subset of the following agents and each following agent exchanges information only with its neighbors under a directed graph. A local iterative learning consensus control protocol is designed using only local measurements communicated among neighb...
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作者：Soleymani, Touraj; Baras, John S.; Hirche, Sandra; Johansson, Karl H.
作者单位：Royal Institute of Technology; University System of Maryland; University of Maryland College Park; Technical University of Munich
摘要：In this article, we study an energy-regulation tradeoff that delineates the fundamental performance bound of a feedback control system over a noisy channel in an unreliable communication regime. The channel and the process are modeled by an additive white Gaussian noise channel with fading and a partially observable Gauss-Markov process, respectively. Moreover, the feedback control loop is constructed by designing an encoder with a scheduler and a decoder with a controller. The scheduler and t...
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作者：Tuna, S. Emre
作者单位：Middle East Technical University
摘要：In undirected networks of identical linear oscillators coupled through dissipative and restorative connectors (e.g., pendulums undergoing small vibrations connected via dampers and springs), the relation between asymptotic synchronization and coupling structure is studied. Conditions on the interconnection under which synchronization can be achieved for some selection of coupling strengths are established. How to strengthen those conditions so that synchronization is guaranteed for all admissi...
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作者：Kumar, Sandeep; Belur, Madhu N.
作者单位：Defence Research & Development Organisation (DRDO); Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay
摘要：Single-input single-output (SISO), systems with zeros interlacing poles (ZIP) have been extensively studied in the literature and have received interest widely. However, the ZIP property for multiple-input and multiple-output (MIMO), systems has not been pursued sufficiently. In this article, we pursue the ZIP property for MIMO systems and link this to strict passivity. For the class of systems that admit a symmetric state-space realization, which for the SISO case is equivalent to ZIP, we obt...
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作者：Rueda-Escobedo, Juan G.; Fridman, Emilia; Schiffer, Johannes
作者单位：Tel Aviv University
摘要：The increasing ease of obtaining and processing data together with the growth in system complexity has sparked the interest in moving from conventional model-based control design toward data-driven concepts. Since in many engineering applications time delays naturally arise and are often a source of instability, we contribute to the data-driven control field by introducing data-based formulas for state feedback control design in linear discrete-time time-delay systems with uncertain delays. Wi...
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作者：Zhang, Jingfan; Carrasco, Joaquin; Heath, William Paul
作者单位：University of Manchester
摘要：This note presents phase conditions under which there is no suitable Zames- Falb multiplier for a given discrete-time system. Our conditions can be seen as the discrete-time counterpart of Jonsson's duality conditions for Zames-Falb multipliers. By contrast with their continuous-time counterparts and other phase limitations in the literature, they lead to numerically efficient results that can be computed either in closed form or via a linear program. The closed-form phase limitations are tigh...
