2期

最新文章

• Memory Augmented Neural Network Adaptive Controllers: Performance and Stability AI翻译
  作者：Muthirayan, Deepan; Khargonekar, Pramod P.
  作者单位：University of California System; University of California Irvine
  摘要：In this article, we propose a novel control architecture, inspired from neuroscience, for adaptive control of continuous-time systems. The proposed architecture, in the setting of standard neural network (NN)-based adaptive control, augments an external working memory to the NN. The controller, through a write operation, writes the hidden layer feature vector of the NN to the external working memory and can also update this information with the observed error in the output. Through a read oper...
• Dual Effect, Certainty Equivalence, and Separation Revisited: A Counterexample and a Relaxed Characterization for Optimality AI翻译
  作者：Derpich, Milan S.; Yuksel, Serdar
  作者单位：Universidad Tecnica Federico Santa Maria; Queens University - Canada
  摘要：In this article, we study the optimality of control policies admitting certainty equivalence or separation (of estimation and control) in discrete-time stochastic control, with the following two main contributions. We first revisit the influential theorem given in the seminal 1974 paper by Bar-Shalom and Tse, which studies the equivalence between certainty equivalence (CE) and no-dual-effect (NDE) properties in discrete-time stochastic control problems involving a linear dynamic system with a ...
• Local and Global Stabilization of Switched Linear Systems With Actuator Saturation AI翻译
  作者：Hou, Tan; Li, Yuanlong; Lin, Zongli
  作者单位：Shanghai Jiao Tong University; University of Virginia
  摘要：Utilizing the min-composite Lyapunov function and the min-projection switching strategy, we solve the local and global stabilization problems for switched linear systems by saturated, not necessarily stabilizing individually, linear feedback laws. Sufficient conditions are derived in the form of matrix inequalities under which the closed-loop system is locally asymptotically stable with an estimate of the domain of attraction or is globally asymptotically stable. The derived conditions are sho...
• Quadratic Signaling With Prior Mismatch at an Encoder and Decoder: Equilibria, Continuity, and Robustness Properties AI翻译
  作者：Kazkl, Ertan; Saritas, Serkan; Gezici, Sinan; Yuksel, Serdar
  作者单位：Queens University - Canada; Middle East Technical University; Ihsan Dogramaci Bilkent University
  摘要：We consider communications through a Gaussian noise channel between an encoder and a decoder which have subjective probabilistic models on the source distribution. Although they consider the same cost function, the induced expected costs are misaligned due to their prior mismatch, which requires a game-theoretic approach. We consider two approaches: a Nash setup, with no prior commitment, and a Stackelberg solution concept, where the encoder is committed to a given announced policy a priori. W...
• Sufficient Conditions for Parameter Convergence Over Embedded Manifolds Using Kernel Techniques AI翻译
  作者：Paruchuri, Sai Tej; Guo, Jia; Kurdila, Andrew
  作者单位：Lehigh University; University System of Georgia; Georgia Institute of Technology; Virginia Polytechnic Institute & State University
  摘要：The persistence of excitation (PE) condition is sufficient to ensure parameter convergence in adaptive estimation problems. Recent results on adaptive estimation in reproducing kernel Hilbert spaces (RKHS) introduce PE conditions for RKHS. This article presents sufficient conditions for PE for the particular class of uniformly embedded RKHS defined over smooth Riemannian manifolds. This article also studies the implications of the sufficient condition in the case when the RKHS is finite or inf...
• Conditions for Convergence of Dynamic Regressor Extension and Mixing Parameter Estimators Using LTI Filters AI翻译
  作者：Yi, Bowen; Ortega, Romeo
  作者单位：University of Sydney; Instituto Tecnologico Autonomo de Mexico
  摘要：In this article, we study the conditions for convergence of the recently introduced dynamic regressor extension and mixing (DREM) parameter estimator when the extended regressor is generated using linear time-invariant filters. In particular, we are interested in relating these conditions with the ones required for convergence of the classical gradient (or least squares), namely the well-known persistent excitation (PE) requirement on the original regressor vector, phi(t) is an element of R-q,...
• Saturating PI Control of Stable Nonlinear Systems Using Singular Perturbations AI翻译
  作者：Lorenzetti, Pietro; Weiss, George
  作者单位：Tel Aviv University
  摘要：This article presents an antiwindup propor- tional-integral (PI) controller, using a saturating integrator, for a single-input and single-output (SISO) stable nonlinear plant, whose steady-state input-output map is increasing. We prove that, under reasonable assumptions, there exists an upper bound on the controller gain such that for any constant reference input, the corresponding equilibrium point of the closed-loop system is exponentially stable, with a large region of attraction. When the ...
• Block Factor-Width-Two Matrices and Their Applications to Semidefinite and Sum-of-Squares Optimization AI翻译
  作者：Zheng, Yang; Sootla, Aivar; Papachristodoulou, Antonis
  作者单位：University of California System; University of California San Diego; University of Oxford
  摘要：Semidefinite and sum-of-squares (SOS) optimization are fundamental computational tools in many areas, including linear and nonlinear systems theory. However, the scale of problems that can be addressed reliably and efficiently is still limited. In this article, we introduce a new notion of block factor-width-two matrices and build a new hierarchy of inner and outer approximations of the cone of positive semidefinite (PSD) matrices. This notion is a block extension of the standard factor-width-...
• Stabilization of Switched Linear Neutral Systems With Time-Scheduled Feedback Control Strategy AI翻译
  作者：Fei, Zhongyang; Chen, Weizhong; Zhao, Xudong; Ren, Shunqing
  作者单位：Dalian University of Technology; Dalian University of Technology; Harbin Institute of Technology
  摘要：This article is concerned with the stabilization of continuous-time switched linear neutral systems with tighter bounds on mode-dependent average dwell time. By introducing a novel time-scheduled control strategy, a switching-signal-based multiple discontinuous Lyapunov function (SMDLF) is constructed for continuous-time switched linear neutral systems, where the discontinuous points of the Lyapunov function during each mode-running interval are dynamically adjusted according to the actual sys...
• Effects of Jamming Attacks on Wireless Networked Control Systems Under Disturbance AI翻译
  作者：Cetinkaya, Ahmet; Ishii, Hideaki; Hayakawa, Tomohisa
  作者单位：Research Organization of Information & Systems (ROIS); National Institute of Informatics (NII) - Japan; Institute of Science Tokyo; Tokyo Institute of Technology; Institute of Science Tokyo; Tokyo Institute of Technology
  摘要：Jamming attacks on wireless networked control systems are investigated for the scenarios where the system dynamics face exogenous disturbance. In particular, the control input packets are assumed to be transmitted from a controller to a remotely located linear plant over an insecure wireless communication channel that is subject to jamming attacks. The time-varying likelihood of transmission failures on this channel depends on the power of the jamming interference signal emitted by an attacker...