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作者：Ma, Ziyue; Tong, Yin; Seatzu, Carla
作者单位：Xidian University; Southwest Jiaotong University; University of Cagliari
摘要：This work studies a new notion of diagnosability called the pattern-pattern diagnosability in discrete event systems modeled by partially observable finite state automata. Suppose that in the system there are some sequences of events that are undesirable to happen, which we call the fault pattern. We want to determine whether the occurrence of the fault pattern can be determined before some sequences--which we call the critical pattern and may cause fatal consequences after the fault pattern-a...
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作者：Zou, Yao; Zuo, Zongyu; Xia, Kewei; Ding, Zhengtao
作者单位：University of Science & Technology Beijing; University of Science & Technology Beijing; Beihang University; Beijing Institute of Technology; University of Manchester
摘要：This article explores the input saturation effect with nonidentical asymmetric levels in the multiagent consensus over a switching directed topology of weak connectivity. In particular, the saturation level for each agent is not symmetric, while the saturation levels associated with distinct agents are nonidentical. Both the continuous- and discrete-time cases are considered. For both the saturated multiagent systems, it is proven with the nonlinear contraction analysis that the conventional d...
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作者：Liu, Nian; Guo, Lei
作者单位：Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS
摘要：Game theory is playing more and more important roles in understanding complex systems and in investigating intelligent machines with various uncertainties. As a starting point, we consider the classical two-player zero-sum linear-quadratic stochastic differential games, but in contrast to most of the existing studies, the coefficient matrices of the systems are assumed to be unknown to both players, and consequently it is necessary to study adaptive strategies of the players, which may be term...
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作者：Tong, Xin; Cheng, Shing Shin
作者单位：Chinese University of Hong Kong; Chinese University of Hong Kong; Chinese University of Hong Kong
摘要：Existing approaches to robust global asymptotic stabilization of a pair of antipodal points on unit n-sphere S-n typically involve the noncentrally synergistic hybrid controllers for attitude tracking on unit quaternion space. However, when switching faults occur due to parameter errors, the noncentrally synergistic property can lead to the unwinding problem or, in some cases, destabilize the desired set. In this work, a hybrid controller is first proposed based on a novel centrally synergisti...
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作者：Wu, Tong; Zhu, Yimin; Zhang, Lixian; Shi, Peng
作者单位：Harbin Institute of Technology; University of Adelaide; Obuda University
摘要：This study is concerned with the bumpless transfer control (BTC) for discrete-time Markov jump linear systems (MJLSs) subject to constraints on states and inputs. A new approach called bumpless transfer model predictive control (BT-MPC) is proposed, which simultaneously optimizes the stabilization performance and bumpless transfer performance in a receding horizon manner. By a scenario-based control law, the fixed-duration transition progress is generalized to the mutable-duration one, so that...
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作者：Ligeikis, Connor H.; Scruggs, Jeffrey T.
作者单位：University of Michigan System; University of Michigan
摘要：A control system is called self-powered if the only energy it requires for operation is that which it absorbs from the plant. For a linear feedback law to be feasible for a self-powered control system, its feedback signal must be colocated with the control inputs, and its input-output mapping must satisfy an associated passivity constraint. The imposition of such a feedback law can be viewed equivalently as the imposition of a linear passive shunt admittance at the actuation ports of the plant...
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作者：Song, Teng; Liu, Bin
作者单位：Wuhan University of Technology; Huazhong University of Science & Technology
摘要：This article deals with the discrete-time stochastic optimal control problems with recursive utilities under weakened convexity assumption. A new stochastic maximum principle is established. Moreover, by constructing two new adjoint equations and two new variational equations for the backward stochastic difference equation, we obtain the second-order necessary optimality condition of quasi-singular control. Finally, as an illustration, a discrete-time mean-variance portfolio selection mixed wi...
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作者：Zhao, Cheng; Zhang, Yanbin
作者单位：Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS
摘要：In this article, we focus on the global stabilizability problem for a class of uncertain stochastic control systems, where both the drift term and the diffusion term are nonlinear functions of the state variables and the control variables. We will show that the widely applied proportional-derivative (PD) control in engineering practice has the ability to globally stabilize such systems in the mean square sense, provided that the upper bounds of partial derivatives of the nonlinear functions sa...
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作者：Wu, Jenq-Lang
作者单位：National Taiwan Ocean University
摘要：In this article, the control synthesis of discrete-time nonlinear control systems with state and input constraints is considered. Functional inequalities are used to express these restrictions. Based on the barrier method, an online nonconvex optimization problem is solved to obtain a feasible control signal at each time step. The convergence of the solution algorithm is demonstrated. Results for a special case in which the constraints are in quadratic forms are presented. The necessary condit...
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作者：Gan, Die; Xie, Siyu; Liu, Zhixin; Lu, Jinhu
作者单位：Zhongguancun Laboratory; University of Electronic Science & Technology of China; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Beihang University
摘要：In this article, we consider the distributed filtering problem over sensor networks such that all sensors cooperatively track unknown time-varying parameters by using local information. A distributed forgetting factor least squares algorithm is proposed by minimizing a local cost function formulated as a linear combination of accumulative estimation error. Stability analysis of the algorithm is provided under a cooperative excitation condition which contains spatial union information to reflec...
