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作者：Kirchhoff, Jonas
作者单位：Technische Universitat Ilmenau
摘要：The new concept of relative generic subsets is introduced. It is shown that the set of controllable linear finite-dimensional port-Hamiltonian systems is a relative generic subset of the set of all linear finite-dimensional port-Hamiltonian systems. This implies that a random, continuously distributed port-Hamiltonian system is almost surely controllable.
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作者：Liu, Wanchun; Quevedo, E. Daniel; Li, Yonghui; Johansson, Karl Henrik; Vucetic, Branka
作者单位：University of Sydney; Queensland University of Technology (QUT); Royal Institute of Technology
摘要：We consider a fundamental remote state estimation problem of discrete-time linear time-invariant (LTI) systems. A smart sensor forwards its local state estimate to a remote estimator over a time-correlated multistate Markov fading channel, where the packet drop probability is time-varying and depends on the current fading channel state. We establish a necessary and sufficient condition for mean-square stability of the remote estimation error covariance in terms of the state transition matrix o...
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作者：dos Reis de Souza, Alex; Efimov, Denis; Raissi, Tarek
作者单位：Centre National de la Recherche Scientifique (CNRS); CNRS - Institute for Information Sciences & Technologies (INS2I); Universite de Lille; Centrale Lille; ITMO University; heSam Universite; Conservatoire National Arts & Metiers (CNAM)
摘要：This article addresses the problem of robust output feedback model predictive control for discrete-time, constrained, linear parameter-varying systems subject to (bounded) state and measurement disturbances. The vector of scheduling parameters is assumed to be an unmeasurable signal taking values in a given compact set. The proposed controller incorporates an interval observer, that uses the available measurement to update the set-membership estimation of the states, and an interval predictor,...
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作者：Subotic, Irina; Hauswirth, Adrian; Dorfler, Florian
作者单位：Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：Inspired by classical sensitivity results for nonlinear optimization, we derive and discuss new quantitative bounds to characterize the solution map and dual variables of a parametrized nonlinear program. In particular, we derive explicit expressions for the local and global Lipschitz constants of the solution map of nonconvex or convex optimization problems, respectively. Our results are geared towards the study of time-varying optimization problems, which are commonplace in various applicati...
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作者：Brahma, Sarnaduti; Ossareh, Hamid R.
作者单位：University of Vermont
摘要：Quasilinear control (QLC) theory provides a set of methods intended for the analysis and design of stochastic feedback systems with static nonlinearities. QLC leverages the method of stochastic linearization (SL), which linearizes the nonlinear functions by utilizing the statistical properties of the inputs to the nonlinearities. In the traditional QLC literature, SL has been thoroughly applied to systems having nonlinearities with only a single input. This article investigates the case of SL ...
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作者：Davila, Jorge; Tranninger, Markus; Fridman, Leonid
作者单位：Instituto Politecnico Nacional - Mexico; Graz University of Technology; Universidad Nacional Autonoma de Mexico
摘要：A finite-time observer for a class of linear time-varying systems with bounded unknown inputs is presented in this note. The design of the observer exploits structural properties of the system and, through a linear operator, allows applying the robust exact differentiator in a block form without requiring additional stabilizing terms. The proposed observer provides an exact estimate of the states after a finite transient time despite the possible instability of the system and the effects of bo...
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作者：Goswami, Debdipta; Paley, Derek A.
作者单位：Princeton University; University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park
摘要：This article considers the problem of bilinearization and optimal control of a control-affine nonlinear system by projecting the system dynamics onto the Koopman eigenspace. Although there are linearization techniques like Carleman linearization for embedding a finite-dimensional nonlinear system into an infinite-dimensional space, they depend on the analytic property of the vector fields and work only on polynomial space. The proposed method utilizes the Koopman canonical transform, specifica...
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作者：Deshmukh, Ankit; Ghosh, Arun
作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kharagpur
摘要：Given a centralized linear time-invariant (LTI) controller, this article investigates if and when the same can be implemented in a decentralized fashion using continuous-time, high-frequency, periodic controllers, recently reported in literature, without compromising input-output performance in averaged sense. In this regard, it is shown that for a strongly connected two-channel system having each subsystem of equal sizes, there exists a relation to compute the decentralized periodic controlle...
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作者：Han, Dongyu; Liu, Kun; Sandberg, Henrik; Chai, Senchun; Xia, Yuanqing
作者单位：Beijing Institute of Technology; Royal Institute of Technology
摘要：This article considers a privacy-concerned distributed optimization problem over multiagent networks, in which malicious agents exist and try to infer the privacy information of the normal ones. We propose a novel dual averaging algorithm which involves the use of a correlated perturbation mechanism to preserve the privacy of the normal agents. It is shown that our algorithm achieves deterministic convergence under arbitrary initial conditions and the privacy preservation is guaranteed. Moreov...
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作者：Katsoukis, Ilias; Rovithakis, George A.
作者单位：Aristotle University of Thessaloniki
摘要：We consider the problem of synchronizing, with prescribed transient and steady-state performance guarantees, the output of high-order, nonlinear, multiagent systems in a leader-following scenario. The agent dynamics are MIMO in lower triangular form and uncertain, as all nonlinearities are unknown and moreover they are perturbed by external additive disturbances. Furthermore, no knowledge is provided regarding bounds or functions bounding the actual system nonlinearities. In addition, the dyna...
