2期

最新文章

• Controllability of Nonlinear Impulsive and Switching Systems With Input Delay AI翻译
  作者：Yan, Jiayuan; Hu, Bin; Guan, Zhi-Hong
  作者单位：Huazhong University of Science & Technology
  摘要：In this article, the controllability is investigated for nonlinear impulsive and switching systems with input delay. Using the fixed point method, two controllability conditions are developed for such systems under different nonlinear constraints. First, the Lipschitz nonlinear condition is considered. A control mapping is constructed based on the input matrix condition, and a nonlinear operator is introduced to convert the controllability into the existence of a fixed point. A sufficient cont...
• A Model Randomization Approach to Statistical Parameter Privacy AI翻译
  作者：Nekouei, Ehsan; Sandberg, Henrik; Skoglund, Mikael; Johansson, Karl Henrik
  作者单位：City University of Hong Kong; Royal Institute of Technology
  摘要：In this article, we study a privacy filter design problem for a sequence of sensor measurements whose joint probability density function (p.d.f.) depends on a private parameter. To ensure parameter privacy, we propose a filter design framework which consists of two components: a randomizer and a nonlinear transformation. The randomizer takes the private parameter as input and randomly generates a pseudo parameter. The nonlinear mapping transforms the measurements such that the joint p.d.f. of ...
• Guaranteed Closed-Loop Learning in Model Predictive Control AI翻译
  作者：Soloperto, Raffaele; Muller, Matthias A.; Allgower, Frank
  作者单位：University of Stuttgart; Leibniz University Hannover
  摘要：In this article, we propose a novel learning-based model predictive control framework for nonlinear systems which is able to guarantee closed-loop learning of the controlled system. We consider a cost function that combines a general economic cost with a user-defined learning cost function that aims at incentivizing learning of the unknown system. In particular, due to the finite horizon of the MPC scheme and to the presence of disturbances, the open-loop trajectory usually differs from the cl...
• Fast Coordination of Distributed Energy Resources Over Time-Varying Communication Networks AI翻译
  作者：Zholbaryssov, Madi; Hadjicostis, Christoforos N.; Dominguez-Garcia, Alejandro D.
  作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Cyprus
  摘要：In this article, we consider the problem of optimally coordinating the response of a group of distributed energy resources (DERs) controlled by distributed agents so they collectively meet the electric power demanded by a collection of loads while minimizing the total generation cost and respecting the DER capacity limits. This problem can be cast as a convex optimization problem, where the global objective is to minimize a sum of convex functions corresponding to individual DER generation cos...
• Variable Elimination in Model Predictive Control Based on K-SVD and QR Factorization AI翻译
  作者：Bemporad, Alberto; Cimini, Gionata
  作者单位：IMT School for Advanced Studies Lucca
  摘要：For linearly constrained least-squares problems that depend on a vector of parameters, this article proposes techniques for reducing the number of involved optimization variables. After first eliminating equality constraints in a numerically robust way by QR factorization, we propose a technique based on singular value decomposition (SVD) and unsupervised learning, that we call $K$-SVD, and neural classifiers to automatically partition the set of parameter vectors in $K$ nonlinear regions in w...
• A Family of Distributed Momentum Methods Over Directed Graphs With Linear Convergence AI翻译
  作者：Gao, Juan; Liu, Xinwei; Dai, Yu-Hong; Huang, Yakui; Yang, Peng
  作者单位：Hebei University of Technology; Hebei University of Technology; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Hebei University of Technology
  摘要：We consider the distributed optimization to minimize a sum of smooth and strongly convex local objective functions over directed graphs. Using row-and column-stochastic weights, we propose a family of distributed momentum methods. It is a para-metric distributed momentum (PDM) method, for which different values of parameter can lead to different distributed momentum methods. PDM includes the distributed heavy-ball method (ABm) and the distributed Nesterov gradient method (ABN) as its special c...
• Secure Control Design for Networked Control Systems With Nonlinear Dynamics Under Time-Delay-Switch Attacks AI翻译
  作者：Sargolzaei, Arman; Zegers, Federico M.; Abbaspour, Alireza; Crane, Carl D.; Dixon, Warren E.
  作者单位：Tennessee Technological University; State University System of Florida; University of Florida
  摘要：A continuous controller is developed for a centralized network control system (NCS), which is composed of agents with nonlinear dynamics subject to a time-delay-switch (TDS) attack and additive disturbances. Since the state tracking error is unmeasurable during TDS attacks, controllers cannot use the state tracking error to coordinate the NCS. Therefore, a novel error signal is designed to address this unique challenge and enable the NCS to achieve a formation control objective. Furthermore, a...
• Stability and Stabilization of Almost Periodic Piecewise Linear Systems With Dwell Time Uncertainty AI翻译
  作者：Fan, Chenchen; Lam, James; Xie, Xiaochen; Li, Panshuo
  作者单位：University of Hong Kong; The University of Hong Kong Shenzhen Institute of Research & Innovation; Harbin Institute of Technology; Guangdong University of Technology
  摘要：This article is dedicated to the stability and stabilization of almost periodic piecewise linear systems (APPLSs) with the uncertain dwell time of subsystems. Taking into account the uncertainty in dwell time for the first time, a novel mixed-mode time-varying Lyapunov function is constructed. A sufficient condition is proposed to guarantee the exponential stability of the system, where the switching instants over each period are unknown and inaccessible except their bounds. Moreover, a period...
• Observability Decomposition of Boolean Control Networks AI翻译
  作者：Li, Yifeng; Zhu, Jiandong
  作者单位：Chongqing Normal University; Nanjing Normal University
  摘要：This article investigates the observability decomposition of Boolean control networks (BCNs) under the algebraic frame based on the semitensor product of matrices. First, the definition for the observability decomposition of BCNs is proposed, which is consistent with the observability decomposition of traditional linear control systems. Then, by using the vertex partition method, a necessary and sufficient vertex partition condition for the observability decomposition of BCNs is proposed. Next...
• Minimal Detectable and Isolable Faults of Active Fault Diagnosis AI翻译
  作者：Xu, Feng
  作者单位：Tsinghua University
  摘要：This article aims to compute guaranteed minimal detectable and isolable faults of set-based active fault diagnosis methods for discrete linear time-invariant systems. First, guaranteed detectable and isolable faults of set-based active fault diagnosis methods are defined in this article. Second, an augmented vector is defined to integrate the effect of both inputs and faults such that the couplings of inputs and faults can be handled effectively. Third, guaranteed minimal detectable and isolab...