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作者：Huang, Yi; Fang, Wentuo; Chen, Zhiyong; Li, Yonggang; Yang, Chunhua
作者单位：Central South University; Inspur; University of Newcastle
摘要：This article investigates the nonuniform and nonconvex input-constrained flocking control problem of continuous-time multiagent systems. A distributed flocking control algorithm is proposed for each agent using the local information from its neighbor agents subject to nonuniform and nonconvex control constraints. Based on a constraint scaling factor and a specific coordinate transformation, a Lyapunov function is constructed to address the nonlinearities caused by input constraints. It is prov...
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作者：Rosolia, Ugo; Chen, Yuxiao; Daftry, Shreyansh; Ono, Masahiro; Yue, Yisong; Ames, Aaron D.
作者单位：California Institute of Technology; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL)
摘要：This article studies the problem of steering a linear system subject to state and input constraints toward a goal location that may be inferred only through noisy partial observations. We assume mixed-observable settings, where the system's state is fully observable and the environment's state defining the goal location is only partially observed. In these settings, the planning problem is an infinite-dimensional optimization problem where the objective is to minimize the expected cost. We sho...
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作者：Mukherjee, Mousumi; Pal, Debasattam
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay
摘要：The issue of initial/boundary conditions for a general system of partial difference equations (PDEs)-called a discrete n-D system-is resolved through the notion of characteristic sets: the restriction of a solution trajectory to a minimal characteristic set can be considered to be the initial/boundary condition to the corresponding trajectory. In the recent paper (Mukherjee and Pal, 2021), it has been shown that every autonomous n-D system admits a minimal characteristic set that is the union ...
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作者：Bhattacharya, Sragdhara; Ghosh, Arun; Das, Sarit K.
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kharagpur
摘要：Aiming to provide better compensation to discrete time (or, sampled-data), multivariable, linear time-invariant (LTI) plants that have nonminimum phase zeros, this article proposes a 2-rate, 2-degree-of-freedom, dynamic output feedback controller. Employing the lifting technique that may convert a 2-periodic system to a time-invariant form, it is shown that, under certain conditions, the equivalent LTI plant becomes a minimum-phase one. Consequently, an H8/loop-transfer-recovery-based LTI appr...
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作者：Cacace, Filippo; Germani, Alfredo
作者单位：University Campus Bio-Medico - Rome Italy; University of L'Aquila
摘要：This article studies the identification problem of linear systems from a set of noisy input-output trajectories. The problem is formulated and solved as a least-square regularized estimate on a suitable function space of finite-bandwidth operators. This abstract setting is well suited to represent a broad class of finite- and infinite-dimensional linear systems. We determine the value of the regularization parameter as a function of the amount of noise on the learning trajectories and we show ...
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作者：Shang, Jun; Chen, Tongwen
作者单位：University of Alberta
摘要：This article considers the problem of eavesdropping on remote state estimation. Linear encryption strategies are used to protect the transmitted data. Two types of data transmission are considered: raw measurements generated by traditional sensors as well as innovations generated by smart sensors. For these two transmission scenarios, the encryption coefficients are obtained by formulating different optimization problems, with the target of maximizing the eavesdropper's estimation error covari...
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作者：Nguyen, Lien T. T.; Yu, Xinghuo; Eberhard, Andrew; Li, Chaojie
作者单位：Royal Melbourne Institute of Technology (RMIT); Royal Melbourne Institute of Technology (RMIT); University of New South Wales Sydney
摘要：In this article, we propose fixed-time gradient dynamics with time-varying coefficients for continuous-time optimization. We first investigate the Lyapunov stability conditions that allow us to achieve fixed-time stability of the time-varying dynamical systems. We then use them to deal with continuous-time optimization problems. We show that under the proposed fixed-time gradient dynamics and by choosing time-varying coefficients, the searching trajectories converge to their optima in fixed-ti...
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作者：Wang, Yongqiang; Basar, Tamer
作者单位：Clemson University; University of Illinois System; University of Illinois Urbana-Champaign
摘要：By enabling multiple agents to cooperatively solve a global optimization problem in the absence of a central coordinator, decentralized stochastic optimization is gaining increasing attention in areas as diverse as machine learning, control, and sensor networks. Since the associated data usually contain sensitive information, such as user locations and personal identities, privacy protection has emerged as a crucial need in the implementation of decentralized stochastic optimization. In this a...
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作者：Von Moll, Alexander; Pachter, Meir; Shishika, Daigo; Fuchs, Zachariah
作者单位：United States Department of Defense; United States Air Force; University System of Ohio; University of Cincinnati; United States Department of Defense; United States Air Force; Air Force Institute of Technology (AFIT); George Mason University; University System of Ohio; University of Cincinnati
摘要：In this article, the problem of guarding a circular target wherein the Defender(s) is constrained to move along its perimeter is posed and solved using a differential game theoretic approach. Both the one-Defender and two Defender scenarios are analyzed and solved. The mobile Attacker seeks to reach the perimeter of the circular target, whereas the Defender(s) seeks to align itself with the Attacker, thereby ending the game. In the former case, the Attacker-wins, and the Attacker and Defender ...
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作者：Cai, Songfu; Lau, Vincent K. N.
作者单位：Hong Kong University of Science & Technology
摘要：In this article, we consider the optimal control of linear systems over wireless multiple-input multiple-output (MIMO) fading channels, where the wireless MIMO fading and random access of the remote controller may cause intermittent controllability or uncontrollability of the closed-loop control system. We consider the finite-time horizon optimal control first and then check the conditions for the existence and uniqueness of optimal control for the infinite-time horizon case. Specifically, for...
