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作者：Ramirez-Rasgado, Felipe; Farza, Mondher; Hernandez-Gonzalez, Omar; M'Saad, Mohammed; Astorga-Zaragoza, Carlos-M.
作者单位：Universite de Caen Normandie
摘要：This article provides a cascade observer design framework for a class of disturbed uniformly observable systems with arbitrary long (constant and known) time delays in both output and state variables. Two fundamental design features are worth mentioning to better appreciate the involved contribution of this article. First, a basic cascade observer is designed assuming that the structure of the system's nonlinear dynamics is triangular with respect to the actual and delayed states and that the ...
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作者：Feng, Shilun; Shi, Dawei; Shi, Yang; Zheng, Kaikai
作者单位：Beijing Institute of Technology; Beijing Institute of Technology; Beijing Institute of Technology; University of Victoria
摘要：An important question in data-driven control is how to obtain an informative dataset. In this work, we consider the problem of effective data acquisition of an unknown linear system with bounded disturbance for both open-loop and closed-loop stages. The learning objective is to minimize the volume of the set of admissible systems. First, a performance measure based on historical data and the input sequence is introduced to characterize the upper bound of the volume of the set of admissible sys...
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作者：Ito, Hiroshi
作者单位：Kyushu Institute of Technology
摘要：This article deals with the stabilization of positive equilibria of dynamical systems whose state variables describe positive quantities. This article elucidates and tackles two obstacles. One is the limitation to systems with Metzler matrices and their nonlinear generalization called cooperative systems, which fall into the monotonicity with respect to positive orthants. For positive equilibria, those properties are neither necessary nor sufficient for positivity of state variables. Due to no...
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作者：Jia, Xianglei
作者单位：Hangzhou Dianzi University
摘要：This technical note considers the problem of global adaptive control via state-quantized feedback for a class of nonlinear systems with large parametric uncertainty. First, a dynamic logarithmic quantizer for discontinuous signals is developed, which can be viewed as a concatenation of novel hysteresis logarithmic quantizers with distinct dead zones. Then, based on the sector bound property of the novel quantizer, a hybrid-gain scaling approach is proposed to achieve global adaptive asymptotic...
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作者：Qian, Jiaxi; Shen, Dong
作者单位：Renmin University of China
摘要：This study investigates a novel iterative learning control scheme for stochastic systems that effectively utilizes historical information. In this approach, an additional historical input term is incorporated, and an adjustable decreasing sequence of learning gains is introduced to the conventional proportional-type learning control scheme. Unlike relying solely on the input signal generated by the previous iteration, this approach leverages the historical input information without resorting t...
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作者：Aravind, Ashwin; Chatterjee, Debasish; Cherukuri, Ashish
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay; University of Groningen
摘要：This article presents a first-order distributed algorithm for solving a convex semi-infinite program (SIP) over a time-varying network. In this setting, the objective function associated with the optimization problem is a summation of a set of functions, each held by one node in a network. The semi-infinite constraint, on the other hand, is known to all agents. The nodes collectively aim to solve the problem using local data about the objective and limited communication capabilities depending ...
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作者：Franssen, Christian P. C.; Zocca, Alessandro; Heidergott, Bernd F.
作者单位：Vrije Universiteit Amsterdam; Vrije Universiteit Amsterdam
摘要：Graphs are commonly used to model various complex systems, including social networks, power grids, transportation networks, and biological systems. In many applications, the connectivity of these networks can be expressed through the mean first passage times (MFPTs) of a Markov chain modeling a random walker on the graph. In this article, we generalize the network metrics based on Markov chains' MFPTs and extend them to networks affected by uncertainty, in which edges may fail and hence not be...
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作者：Kurkcu, Burak; Tomizuka, Masayoshi
作者单位：Santa Clara University; University of California System; University of California Berkeley
摘要：In this article, we establish necessary and sufficient conditions for stable inversion, addressing challenges in nonminimum phase, nonsquare, and singular systems. An H-infinity-based algebraic approximation is introduced for near-perfect tracking without preview. In addition, we propose a novel robust control strategy combining the nominal model with dual feedforward control to form a feedback structure. Numerical comparison demonstrates the approach's effectiveness.
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作者：Wu, Jiacheng; Wang, Jing; Ma, Qian; Shen, Hao
作者单位：Zhejiang University; Anhui University of Technology; Nanjing University of Science & Technology
摘要：Data-storage-based reinforcement learning (RL) algorithms for dynamic games typically impose a persistent excitation (PE) condition to guarantee convergence. However, this requirement can be overly restrictive in practical implementations. To address this limitation, this article proposes a novel online RL algorithm for approximating the Nash equilibrium solutions in discrete-time multiplayer nonzero-sum games under a relaxed initial excitation condition, thereby avoiding the need for the PE a...
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作者：Xu, Yiqiao; Gong, Tengyang; Ding, Zhengtao; Parisio, Alessandra
作者单位：University of Manchester
摘要：This article studies distributed time-varying resource allocation (TVRA) where the local cost functions, global equality constraints, and local feasibility constraints (LFCs) vary with time. Algorithms that mimic the structure of feedback-feedforward control systems are proposed. Feedback and feedforward laws are generated using local estimates from a distributed estimator, while a distributed controller enforces the stationarity condition within a fixed time and updates the candidate solution...
