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作者：Chen, Kaiwen; Astolfi, Alessandro
作者单位：Imperial College London; University of Rome Tor Vergata
摘要：This article investigates the adaptive control problem for systems with time-varying parameters using the so-called congelation of variables method. First, two scalar examples to illustrate how to deal with time-varying parameters in the feedback path and in the input path, respectively, are discussed. The control problem for an n-dimensional lower triangular system via state feedback is then discussed to show how to combine the congelation of variables method with adaptive backstepping techni...
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作者：Hu, Jianchen; Ding, Baocang
作者单位：Xi'an Jiaotong University; Chongqing University of Posts & Telecommunications
摘要：This article considers dynamic output feedback model predictive control for quasi-linear parameter varying model with norm-bounded disturbance. The infinite horizon control moves are parameterized as the parameter-dependent dynamic output feedback (PDDOF) laws. In contrast to the traditional single-step approach where one PDDOF law is utilized, in this article a periodic approach where a sequence of PDDOF laws, which are invoked periodically in the future predictions, are applied. The regions ...
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作者：Yuan, Shuai; Lv, Maolong; Baldi, Simone; Zhang, Lixian
作者单位：Harbin Institute of Technology; Delft University of Technology; Southeast University - China
摘要：This article investigates the stability of continuous-time switched linear systems with dwell-time constraints. A fresh insight into this established problem is provided via novel stability conditions that require the solution to a family of differential Lyapunov equations and algebraic Lyapunov equations. The proposed analysis, which leads to a peculiar Lyapunov function that is decreasing in between and at switching instants, enjoys the following properties: it achieves the same dwell time a...
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作者：Azzollini, Ilario Antonio; Yu, Wenwu; Yuan, Shuai; Baldi, Simone
作者单位：University of Bologna; Southeast University - China; Harbin Institute of Technology; Delft University of Technology
摘要：A challenging task in network synchronization is steering the network toward a coherent solution, when the dynamics of the constituent systems are heterogeneous and uncertain. In this situation, synchronization can be achieved via adaptive protocols (with adaptive feedback gains or adaptive coupling gains, or both). However, as state-of-the-art synchronization methods adopt a distributed observer architecture, they require to communicate extra observer variables among neighbors, in addition to...
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作者：Pang, Yipeng; Hu, Guoqiang
作者单位：Nanyang Technological University
摘要：This article considers a distributed Nash equilibrium seeking problem, where the players only have partial access to other players' actions, such as their neighbors' actions. Thus, the players are supposed to communicate with each other to estimate other players' actions. To solve the problem, a leader-following consensus gradient-free distributed Nash equilibrium seeking algorithm is proposed. This algorithm utilizes only the measurements of the player' local cost function without the knowled...
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作者：Haesaert, Sofie; Chen, Fei; Abate, Alessandro; Weiland, Siep
作者单位：Eindhoven University of Technology; Royal Institute of Technology; University of Oxford
摘要：The control and verification of industrial processes, modeled as discrete-time descriptor systems, is often computationally hard due to the presence of both algebraic couplings and difference equations. In this article, we introduce a new control synthesis method for descriptor systems which is based on formal abstractions and enables control design over related reduced-order models. We leverage notions of exact and approximate similarity relations, which hold for the algebraic couplings that ...
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作者：Mousavi, Shima Sadat; Haeri, Mohammad; Mesbahi, Mehran
作者单位：Sharif University of Technology; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of Washington; University of Washington Seattle
摘要：In this article, we examine the controllability of Laplacian dynamic networks on cographs. Cographs appear in modeling a wide range of networks and include as special instances, the threshold graphs. In this article, we present necessary and sufficient conditions for the controllability of cographs, and provide an efficient method for selecting a minimal set of input nodes from which the network is controllable. In particular, we define a sibling partition in a cograph and show that the networ...
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作者：Athalye, Chirayu D.; Pal, Debasattam; Pillai, Harish K.
作者单位：Indian Institute of Science (IISC) - Bangalore; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bombay
摘要：In this article, we examine a particular family of infinite-dimensional discrete autonomous systems given by a first-order state-space equation; the state transition matrix for this family is a Laurent polynomial matrix A(sigma, sigma(-1)), where s is the shift operator on R-n-valued sequences. We term this family of systems as Laurent systems. We give necessary and sufficient conditions for the exponential l(2)-stability and the exponential l(infinity)-stability of Laurent systems. We also co...
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作者：Hauswirth, Adrian; Bolognani, Saverio; Hug, Gabriela; Dorfler, Florian
作者单位：Swiss Federal Institutes of Technology Domain; ETH Zurich
摘要：Autonomous optimization refers to the design of feedback controllers that steer a physical system to a steady state that solves a predefined, possibly constrained, optimization problem. As such, no exogenous control inputs such as set points or trajectories are required. Instead, these controllers are modeled after optimization algorithms that take the form of dynamical systems. The interconnection of this type of optimization dynamics with a physical system is however not guaranteed to be sta...
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作者：Joseph, Geethu; Murthy, Chandra R.
作者单位：Indian Institute of Science (IISC) - Bangalore; Syracuse University
摘要：In this article, we consider the controllability of a discrete-time linear dynamical system with sparse control inputs. Sparsity constraints on the input arises naturally in networked systems, where activating each input variable adds to the cost of control. We derive algebraic necessary and sufficient conditions for ensuring controllability of a system with an arbitrary transfer matrix. The derived conditions can be verified in polynomial time complexity, unlike the more traditional Kalman-ty...
