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作者：Sun, Jintao; Cantoni, Michael
作者单位：University of Melbourne
摘要：Standard formulations of prescribed worst-case disturbance energy-gain control policies for linear time-varying systems depend on all forward model data. In discrete time, this dependence arises through a backward Riccati recursion. This article is about the infinite-horizon l(2) gain performance of state feedback policies with only finite receding-horizon preview of the model parameters. The proposed synthesis of controllers subject to such a constraint leverages the strict contraction of lif...
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作者：Chandak, Siddharth; Bistritz, Ilai; Bambos, Nicholas
作者单位：Stanford University; Tel Aviv University; Tel Aviv University
摘要：Consider N players and K games taking place simultaneously. Each of these games is modeled as a Tug-of-War (ToW) game where increasing the action of one player decreases the reward for all other players. Each player participates in only one game at any given time. At each time step, a player decides the game in which they wish to participate in and the action they take in that game. Their reward depends on the actions of all players who are in the same game. This system of K games is termed a ...
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作者：Freire, Victor; Nicotra, Marco M.
作者单位：University of Colorado System; University of Colorado Boulder
摘要：This article presents an approach to design control barrier functions (CBFs) for arbitrary state and input constraints using tools from the reference governor literature. In particular, it is shown that dynamic safety margins (DSMs) are CBFs for an augmented system obtained by concatenating the state with a virtual reference. The proposed approach is agnostic to the relative degree and can handle multiple state and input constraints using the control-sharing property of CBFs. The construction ...
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作者：Garg, Kunal; Sanfelice, Ricardo G.; Cardenas, Alvaro A.
作者单位：Arizona State University; Arizona State University-Tempe; University of California System; University of California Santa Cruz; University of California System; University of California Santa Cruz
摘要：This article investigates security guarantees for cyber-physical systems (CPS) against actuator attacks. We introduce a new attack-detection mechanism based on zeroing control barrier function conditions. We propose an adaptive recovery mechanism that responds based on the system's proximity to safety violations. Our attack-detection mechanism has been proven to be sound, meaning that it consistently detects adversarial attacks without any false negatives. In addition, we propose a novel hybri...
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作者：Mazenc, Frederic; Malisoff, Michael
作者单位：Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; Louisiana State University System; Louisiana State University
摘要：We study vector versions of Halanay's inequality. We provide an input-to-state stability result. Even in the scalar case, we provide tighter bounds than those that were available in the literature. Our key new techniques involve finding componentwise positive vectors in the null spaces of suitable matrices. These matrices are expressible as weighted sums involving the coefficient matrices that occur in the vector versions of Halanay's inequality. We allow time-varying coefficients in our Halan...
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作者：Stewart, Jacob; Ioannou, Petros A.
摘要：Effective disturbance rejection technology is important in a variety of industrial applications because disturbances can render products unsafe, unusable, or deteriorate their performance. Many varying disturbances that appear in practice may be modeled as a sum of sinusoidal components with constant or slowly time-varying amplitude and frequency parameters, and many of the systems have dynamics that are well modeled by linear time-invariant or linear time-varying systems. This article analyti...
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作者：Hu, Zhipei; Zhao, Xueyan; Ho, Daniel W. C.; Shen, Bo; Deng, Feiqi; Xu, Baishu
作者单位：South China University of Technology; City University of Hong Kong; Donghua University
摘要：In this article, the leader-following consensus problem of randomly sampled multiagent systems (MASs) subject to energy-dependent packet dropouts is investigated. Leveraging a hold-input strategy, we first establish a unified discrete-time framework that simultaneously accounts for the impacts of noisy sampling intervals and energy-dependent packet dropouts. Under the centralized energy allocation scheme, we provide a method to calculate the probability of successful sampled-data transmission ...
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作者：Wang, Chen; Sui, Tianju; Marelli, Damian; Sun, Xi-Ming; Fu, Minyue
作者单位：Dalian University of Technology; Guangdong University of Technology
摘要：We study the problem of designing an attacking strategy for a remote state estimator of a linear Gaussian cyber-physical system. We focus on an innovation-based attack on a scenario, in which a smart sensor transmits innovations via a wireless communication network. We start by considering the attacking scheme in its most general form, and constrain its design so that it remains stealthy to the attack detector at the receiver side. To this end, we consider two stealthiness constraints. First, ...
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作者：Chen, Guang-Yong; Su, Xiang-Xiang; Gan, Min; Xue, Peng; Liao, Yi; Chen, C. L. Philip
作者单位：Fuzhou University; Qingdao University; South China University of Technology
摘要：Nonlinear regression models are essential in various fields, such as system identification, data analysis, and signal processing. Despite their importance, the efficiency of robust parameter estimation is hindered by inherent nonlinearity and nonsmoothness. This article presents an efficient and robust parameter estimation algorithm for nonlinear regression problems by utilizing the smooth Huber loss instead of the L-1 loss. We begin by analyzing the structural characteristics of nonlinear reg...
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作者：Li, Bo; Wu, Tong; Cai, Bo; Zhang, Lixian; Chen, Hong
作者单位：Harbin Institute of Technology; Tongji University
摘要：This article is concerned with the design of online data-driven model predictive control (MPC) for switched linear systems with online-generated subsystems and unknown switching signals. The online input-state data are used to detect switching instants and update the MPC law directly to match the new subsystem bypassing identifying its model. Once a switching is detected, a fast-to-slow excitation scheme will be executed until a suitable MPC law is attainable. Specifically, the fast-sampling e...
