-
作者：Li, Xiuxian; Xie, Lihua; Hong, Yiguang
作者单位：Tongji University; Nanyang Technological University; Tongji University
摘要：This article proposes a new framework for distributed optimization, called distributed aggregative optimization, which allows local objective functions to be dependent not only on their own decision variables, but also on the sum of functions of decision variables of all the agents. To handle this problem, a distributed algorithm, called distributed aggregative gradient tracking, is proposed and analyzed, where the global objective function is strongly convex, and the communication graph is ba...
-
作者：Ma, Ziyue; Cai, Kai
作者单位：Xidian University; Osaka Metropolitan University
摘要：In this article, we study a security problem of protecting secrets in discrete-event systems modeled by deterministic finite automata. In the system, some states are defined as secrets, each of which is associated with a security level. The problem is to design an event-protecting policy such that any event sequence from the initial state that reaches a secret state contains a number of protected events no less than the required level of security. To solve this secret securing problem, we firs...
-
作者：Valmorbida, Giorgio; Papachristodoulou, Antonis
作者单位：Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); Institut Polytechnique de Paris; Ecole Polytechnique; University of Oxford
摘要：This article presents strategies for state-feedback control law design of nonlinear control laws with saturating inputs. The input constraints are handled by considering a generalized local sector inequality allowing the study of nonsymmetric saturation bounds. A numerical formulation is presented for polynomial systems and is based on the solution of Lyapunov inequalities with sum-of-squares programming.
-
作者：Vlaski, Stefan; Vandenberghe, Lieven; Sayed, Ali H.
作者单位：Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; University of California System; University of California Los Angeles
摘要：The purpose of this article is to develop and study a decentralized strategy for Pareto optimization of an aggregate cost consisting of regularized risks. Each risk is modeled as the expectation of some loss function with unknown probability distribution, while the regularizers are assumed deterministic, but are not required to be differentiable or even continuous. The individual, regularized, cost functions are distributed across a strongly connected network of agents, and the Pareto optimal ...
-
作者：Zhao, Guanglei; Hua, Changchun
作者单位：Yanshan University
摘要：In this article, we develop a hybrid system approach for sampled-data-based leader-following consensus of multiagent systems over a static/switching directed network. First, an asynchronous sampled-data hybrid consensus control protocol is proposed, which has an extra reset control part in contrast with the traditional linear control protocol and is beneficial for achieving better transient consensus performance. Then, with several properly defined internal variables, a hybrid model consisting...
-
作者：Liang, Xiao; Qi, Qingyuan; Zhang, Huanshui; Xie, Lihua
作者单位：Shandong University of Science & Technology; Nanyang Technological University; Qingdao University; Shandong University of Science & Technology
摘要：This article considers the decentralized control for networked control systems (NCSs) with asymmetric information. In this NCSs model, the controller 2 (C2) shares its observations and part of its historical control inputs with the controller 1 (C1), whereas C2 cannot obtain the information of C1 due to network constraints. Under the linear control strategies assumption, we present the optimal estimators for C1 and C2 respectively based on asymmetric observations. Since the information for C1 ...
-
作者：Mazenc, Frederic; Malisoff, Michael; Krstic, Miroslav
作者单位：Louisiana State University System; Louisiana State University; University of California System; University of California San Diego
摘要：We provide two extensions of Halanay's inequality, where the scalar function in the usual Halanay's inequality is replaced by a vector valued function, under a Metzler condition. We provide an easily checked necessary and sufficient condition for asymptotic convergence of the function to the zero vector in the time-invariant case. For the time-varying cases, we provide a sufficient condition for this convergence, which can be easily checked when the systems are periodic. We illustrate our resu...
-
作者：Zhou, Bin; Michiels, Wim; Chen, Jie
作者单位：Harbin Institute of Technology; KU Leuven; City University of Hong Kong
摘要：This article studies fixed-time stabilization (FxTS) of a general controllable linear system with an input delay tau. It is shown that such a problem is not solvable if the prescribed convergence time T-tau is smaller than 2(tau). For T-tau >= 3 tau, a solution based on linear periodic delayed feedback (PDF) without any distributed delay is established. For T-tau > 2 tau, a solution based on linear predictor-based PDF containing a distributed delay is proposed. For both cases, the gains of the...
-
作者：An, Liwei; Yang, Guang-Hong
作者单位：Northeastern University - China; Northeastern University - China
摘要：Multiagent distributed optimal coordination (DOC) involves the motion conflicts of a large numbers of physical systems, which lead to significant safety challenges in terms of collision avoidance. This article studies the problem of secure DOC for multiple uncertain Euler-Lagrangian (EL) systems. The objective is to steer each EL agent to achieve the optimization task while avoiding collisions with other agents. The main challenge focuses on the co-design of optimal coordination strategy and c...
-
作者：Kadam, Sudin; Phogat, Karmvir Singh; Banavar, Ravi N.; Chatterjee, Debasish
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay
摘要：In this article, we present the discrete-time isoholonomic problem of the planar Purcell's swimmer and solve it using the discrete-time Pontryagin's maximum principle. The three-link Purcell's swimmer is a locomotion system moving in a low Reynolds number environment. The kinematics of the system evolves on a principal fiber bundle. A structure-preserving discrete-time kinematic model of the system is obtained in terms of the local form of a discrete connection. An adapted version of the discr...
