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作者：Yan, Hong-Sen; Duan, Zheng-Yi
作者单位：Southeast University - China
摘要：For nonlinear time-delay systems with uncertainties, the existing approaches to robust model predictive control (MPC) are based on the min-max optimization formulation. Unfortunately, these approaches are generally conservative for most practical problems. For this sake, this article proposes a tube-based MPC consisting of MPC and control contraction metric (CCM) controller. The MPC is utilized as a nominal controller to generate a reference trajectory, while the CCM controller is used as a lo...
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作者：Petsagkourakis, Panagiotis; Heath, William P.; Carrasco, Joaquin; Theodoropoulos, Constantinos
作者单位：University of Manchester; University of Manchester
摘要：Conditions for robust input-output stability of barrier-based model predictive control of linear systems with linear and convex nonlinear (hard or soft) constraints are established through the construction of integral quadratic constraints (IQCs). The IQCs can be used to determine sufficient conditions for global closed-loop stability. In particular, conditions for robust stability can be obtained in the presence of unstructured model uncertainty. IQCs with both static and dynamic multipliers ...
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作者：Chen, Yuqing; Braun, David J.
作者单位：Singapore University of Technology & Design; Vanderbilt University
摘要：This article proposes a data-driven iterative feedback control method to efficiently solve finite time horizon, nonlinear, input constrained optimal control problems. The proposed method introduces a novel approach to combine an inexact system model with measured state information to reduce the cost and provide near-optimal control by approximately solving the optimal control problem along the trajectory of the real system, as opposed to solving it along the trajectory predicted by the inexact...
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作者：Xiao, Feng; Shi, Yang; Chen, Tongwen
作者单位：North China Electric Power University; North China Electric Power University; University of Victoria; University of Alberta
摘要：This article presents a unified framework for the stability and performance analysis of networked linear control systems with asynchronous continuous-time or discrete-time event-triggering. In the networked system, the multiple outputs of the plant and the controller are independently transmitted via a single shared or multiple channels based on local event-triggering conditions. Regarding the restrictions of physical devices, in the event-checking procedure, an inactive period of time is allo...
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作者：Jia, Jiajia; van Waarde, Henk J.; Trentelman, Harry L.; Camlibel, M. Kanat
作者单位：University of Groningen
摘要：This article deals with strong structural controllability of linear systems. In contrast to the existing work, the structured systems studied in this article have a so-called zero/nonzero/arbitrary structure, which means that some of the entries are equal to zero, some of the entries are arbitrary but nonzero, and the remaining entries are arbitrary (zero or nonzero). We formalize this in terms of pattern matrices, whose entries are either fixed zero, arbitrary nonzero, or arbitrary. We establ...
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作者：Halperin, Ido; Agranovich, Grigory; Lew, Beni
作者单位：Ariel University; Ariel University; VOLCANI INSTITUTE OF AGRICULTURAL RESEARCH
摘要：Bilinear state-space models, a type of simple nonlinear model, have different applications. Optimal control of such models is often used for performance improvement. A solution for a new class of optimization problem, which is defined as inhomogeneous discrete-time bilinear plant with control trajectory constraints and a biquadratic performance index, is presented. Krotov's method is used for computing a candidate solution for this problem. A suitable sequence of improving functions, which are...
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作者：Jonker, Jonathan; Zheng, Peng; Aravkin, Aleksandr Y.
作者单位：University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle
摘要：Dynamic inference problems in autoregressive (AR/ARMA/ARIMA), exponential smoothing, and navigation are often formulated and solved using state-space models (SSMs), which allow a range of statistical distributions to inform innovations and errors. In many applications, the main goal is to identify not only the hidden state, but also additional unknown model parameters (e.g., AR coefficients or unknown dynamics). We show how to efficiently optimize over model parameters in SSM that use smooth p...
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作者：Ortega, Romeo; Nuno, Emmanuel; Bobtsov, Alexey
作者单位：Instituto Tecnologico Autonomo de Mexico; ITMO University; Universidad de Guadalajara
摘要：A novel approach to solve the problem of distributed state estimation of linear time-invariant systems is proposed in this article. It relies on the application of parameter-estimation-based observers, where the state observation task is reformulated as a parameter estimation problem. In contrast with existing results, our solution achieves convergence in finite time, without injection of high gain, and imposes very weak assumptions on the communication graph-namely, the existence of an open H...
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作者：Shao, Jinliang; Zheng, Wei Xing; Shi, Lei; Cheng, Yuhua
作者单位：University of Electronic Science & Technology of China; Shenzhen Institute of Artificial Intelligence & Robotics for Society; Western Sydney University
摘要：In this article, we investigate leader-follower flocking for the Cucker-Smale model with lossy links and general weight functions. Here, the loss phenomenon of the control packages from the controller to the actuator is characterized by a Bernoulli stochastic variable and the edge weights of the interaction network are determined by a general update rule based on the distance between agents. A method based on the products of substochastic matrices is developed to analyze the flocking behavior ...
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作者：Sun, Jiwei; Lin, Wei
作者单位：Dongguan University of Technology; University System of Ohio; Case Western Reserve University
摘要：This article addresses the problem of global state regulation with stability by delay-free feedback for feedforward systems with large delays in both state and input. A gain-based nested saturation control strategy is developed to treat delays in the chain of integrators, state, and input simultaneously. It is shown that global state regulation with stability is possible by a delay-free, gain-based nested saturation compensator whose gain is updated dynamically. The effectiveness of the gain-b...
