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作者：Khong, Sei Zhen; Lanzon, Alexander
作者单位：National Sun Yat Sen University; University of Manchester
摘要：We establish robust stability of feedback interconnections of linear time-invariant systems with potentially marginally stable open-loop poles via frequency-varying quadratic constraints. These constraints may be used to characterise numerous system properties, such as small-gain, passivity, negative imaginariness, and their weighted variants, that are manifested on different band-limited frequencies. Such systems arise in practical mechanical settings where force actuators and displacement/ve...
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作者：Oh, Sang-Young; Choi, Ho-Lim
作者单位：Dong A University
摘要：In this note, we propose an adaptive zero-order-hold triggered control (ZTC) for a chain of integrators with unknown input delay and interexecution time by output feedback. The proposed controller is memoryless as it does not engage any triggering conditions. Our controller is adaptive, this allows it to deal with unknown input delay and interexecution time. The system analysis of the method considered in this note shows that the closed-loop system is globally regulated while its convergence s...
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作者：Wu, Liang; Braatz, Richard D.
作者单位：Massachusetts Institute of Technology (MIT)
摘要：Providing an execution time certificate is a pressing requirement when deploying model predictive control (MPC) in real-time embedded systems such as microcontrollers. Real-time MPC requires that its worst-case (maximum) execution time must be theoretically guaranteed to be smaller than the sampling time in a closed-loop. This technical note considers input-constrained MPC problems and exploits the structure of the resulting box-constrained QPs. Then, we propose a cost-free and data-independen...
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作者：Dolk, V. S.; Scheres, K. J. A.; Postoyan, R.; Heemels, W. P. M. H.
作者单位：Eindhoven University of Technology; Centre National de la Recherche Scientifique (CNRS); Universite de Lorraine
摘要：We present a framework for the design of time- and event-triggered communication schemes for a broad class of multiagent systems (MAS). The framework is general in the sense that we consider a class of heterogeneous nonlinear MAS with directed communication graphs subject to disturbances and the inevitable imperfections induced by packet-based networked communication, such as time-varying transmission delays and intervals. Under suitable conditions, the designed distributed time- or event-trig...
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作者：Xing, Wei; Zhao, Xudong; Li, Yuzhe; Liu, Le
作者单位：Hainan University; Dalian University of Technology; Northeastern University - China
摘要：This article concentrates on the linear quadratic control of cyber-physical systems subject to denial-of-service attacks. A Stackelberg game framework is proposed to analyze the strategic interaction between a sensor and an attacker considering a standard block fading wireless communication channel. The reward function composing of the linear quadratic control consumption and the power consumption is provided on account of energy constraints of the sensor and the attacker. To proactively overc...
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作者：Su, Lanlan; Zhao, Di; Khong, Sei Zhen
作者单位：University of Manchester; Nanjing University; Tongji University; National Sun Yat Sen University
摘要：This note studies the exponential convergence of input-output signals of discrete-time nonlinear systems composed of a feedback interconnection of a linear time-invariant system and a nonlinear uncertainty. Both the open-loop subsystems are allowed to be unbounded. Integral-quadratic-constraint-based conditions are proposed for these uncertain feedback systems, including the Lurye type, to exhibit the property that the endogenous input-output signals enjoy an exponential convergence rate for a...
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作者：Zhang, Sheng; Pananjady, Ashwin; Romberg, Justin
作者单位：University System of Georgia; Georgia Institute of Technology
摘要：Motivated by decentralized sensing and policy evaluation problems, we consider a particular type of distributed stochastic optimization problem over a network, called the online stochastic distributed averaging problem. We design and analyze a dual-based, Polyak-Ruppert averaged method for this problem. We show that the proposed algorithm attains an accelerated deterministic error depending optimally on the condition number of the network, and also that it has optimal stochastic error. This im...
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作者：Chen, Guoliang; Liu, Xinru; Ren, Xiaoqiang; Xia, Jianwei; Park, Ju H.
作者单位：Liaocheng University; Shanghai University; Yeungnam University
摘要：This article investigates the design and countermeasure for a class of stealthy attack, called zero-dynamics attack, targeting aperiodic sampled-data control systems. From the viewpoint of attackers, the attack design strategy against aperiodic sampled-data control systems is proposed. The strategy ensures that the detection signal at sampling instants consistently remains zero, allowing the designed zero-dynamics attack to achieve stealthiness. From the perspective of defenders, asynchronous ...
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作者：Kuntz, Steven J.; Rawlings, James B.
作者单位：University of California System; University of California Santa Barbara
摘要：This article addresses the maximum likelihood identification of models for offset-free model predictive control, where linear time-invariant models are augmented with (fictitious) uncontrollable integrating modes, called integrating disturbances. The states and disturbances are typically estimated with a Kalman filter. The disturbance estimates effectively provide integral control, so the quality of the disturbance model (and resulting filter) directly influences the control performance. We im...
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作者：Wang, Zhi-Min; Liu, Kun-Zhi; Cheng, Xiao-Lin; Sun, Xi-Ming
作者单位：Dalian University of Technology
摘要：In this article, we consider the stabilization problem of switched systems consisting of a limited number of unknown linear subsystems regulated by unknown switching signals. To this end, we first develop a data-driven model predictive control (MPC) scheme with the online input-output trajectory of switched linear systems. Considering the mismatch of the data during the switching interval, the slack variable is introduced to ensure the feasibility of the algorithm. Then, the stability of the s...
