-
作者：Cosentino, Francesco; Oberhauser, Harald; Abate, Alessandro
作者单位：University of Oxford; Alan Turing Institute; University of Oxford
摘要：This article concerns continuous-time, continuous-space stochastic dynamical systems described by stochastic differential equations (SDE). It presents a new approach to compute probabilistic safety regions, namely sets of initial conditions of the SDE associated to trajectories that are safe with a probability larger than a given threshold. The approach introduces a functional that is minimized at the border of the probabilistic safety region, then solves an optimization problem using techniqu...
-
作者：Yin, Hao; Jayawardhana, Bayu; Trenn, Stephan
作者单位：University of Groningen
摘要：This article studies contraction analysis of switched systems that are composed of a mixture of contracting and noncontracting modes. The first result pertains to the equivalence of the contraction of a switched system and the uniform global exponential stability of its variational system. Based on this equivalence property, sufficient conditions for a mode-dependent average dwell/leave-time based switching law to be contractive are established. Correspondingly, linear matrix inequality (LMI) ...
-
作者：Guo, Xiaoyu; Wang, Chenliang; Dong, Zhen; Ding, Zhengtao
作者单位：University of Manchester; Beihang University
摘要：In this article, a novel output-feedback adaptive containment control scheme is proposed for a class of heterogeneous multiagent systems, where the agents are nonlinear multi-input multi-output systems whose relative degrees are allowed to be different. Unlike existing results, we only require the leading principal minors of agents' control gain matrices (CGMs) to be nonzero and take into account unknown direction actuator faults, which relaxes the restrictions on CGMs and enhances system reli...
-
作者：Lagosz, Szymon; Wachel, Pawel; Sliwinski, Przemyslaw
作者单位：Wroclaw University of Science & Technology
摘要：An online modeling algorithm is derived from a generic stochastic dual averaging (DA) method. It employs a negative entropy as a distance-generating function and the Volterra series expansion as a dictionary. Assuming that the measurement data are not i.i.d. but generated by a nonlinear dynamical system with an infinite, exponentially fading memory, the error bounds are established for both the generic DA method and for the proposed modeling algorithm. The experiments performed on a set of ben...
-
作者：Wen, Guanghui; Zheng, Wei Xing; Wan, Ying
作者单位：Southeast University - China; Western Sydney University; Southeast University - China
摘要：The distributed robust optimization problem is investigated in this article for a class of networked agent systems under stochastically switching communication graphs. Unlike most existing results on distributed optimization of networked agent systems, the dynamics of each agent in the present model are allowed to be subjected to matched linearly parameterized unknown nonlinearities while the underlying communication graph is stochastically switching among some matrix-weighted communication gr...
-
作者：Zuo, Gewei; Wang, Yujuan
作者单位：Chongqing University; Chongqing University
摘要：In this article, we address the prescribed finite time control problem for a class of strict-feedback systems with unknown parameters. A backstepping-based adaptive prescribed-time control algorithm is proposed for second-order strict-feedback systems, where the global stability of the system is ensured, and a dynamic surface control (DSC)-based adaptive prescribed-time algorithm is designed for the system in high-order case. For the DSC-based method, a novel first-order filter is constructed ...
-
作者：Becerril, Jorge A. A.; Cortez, Karla L. L.; de Pinho, Maria do Rosario
作者单位：Tecnologico de Monterrey; Universidad Autonoma Metropolitana - Mexico; Universidade do Porto
摘要：In this article, we establish a minimum principle, including a Weierstrass condition, for an affine-convex optimal control problem with mixed constraints without any regularity assumptions on the latter, but requiring only a full-rank condition on the functions defining the equality constraints.
-
作者：Chang, Yanling; Garcia, Alfredo; Wang, Zhide; Sun, Lu
作者单位：Texas A&M University System; Texas A&M University College Station; Texas A&M University System; Texas A&M University College Station
摘要：Partially observable Markov decision processes (POMDPs) is a well-developed framework for sequential decision-making under uncertainty and partial information. This article considers the (inverse) structural estimation of the primitives of a POMDP based upon data in the form of sequences of observables and implemented actions. We analyze the structural properties of an entropy regularized POMDP and specify conditions under which the model is identifiable without knowledge of the state dynamics...
-
作者：Jia, Xianglei; Xu, Shengyuan; Zhou, Shaosheng
作者单位：Hangzhou Dianzi University; Nanjing University of Science & Technology
摘要：In this technical note, the problem of global asymptotical state regulation is considered for a class of nonlinear systems with unknown measurement sensitivity and polynomial growth constraint. A new dynamic output feedback controller with dual nonidentification adaptive gains is proposed by means of a novel constructive solution of a pair of matrix inequalities including an unknown time-varying parameter. It mainly reduces the conservatism of the existing results from two aspects: 1) the unkn...
-
作者：Yang, Shuo; Yin, Xiang
作者单位：University of Pennsylvania; Shanghai Jiao Tong University
摘要：This article investigates an important information-flow security property called opacity in partially-observed discrete-event systems. We consider the presence of a passive intruder (eavesdropper) that knows the dynamic model of the system and can use the generated information flow to infer some secret of the system. A system is said to be opaque if it always holds the plausible deniability for its secret. Existing notions of opacity only consider secret either as currently visiting some secre...
