نتایج جستجو برای: packet dropouts

تعداد نتایج: 44166  

This paper addresses control design in networked control system by considering stochastic packet dropouts in the forward path of the control loop. The packet dropouts are modelled by mutually independent stochastic variables satisfying Bernoulli binary distribution. A sliding mode controller is utilized to overcome the adverse influences of stochastic packet dropouts in networked control system...

Journal: :Systems & Control Letters 2011
Yumiko Ishido Kiyotsugu Takaba Daniel E. Quevedo

This paper is concerned with stability analysis of a networked control system, wherein communication from the controller to the plant input is through a digital channel subject to packet-dropouts and finite level quantization. No acknowledgments of receipt are available to the controller. To alleviate the effect of packet-dropouts, the controller transmits tentative plant input sequences. Withi...

2016
Masaaki Nagahara Daniel E. Quevedo Jan Østergaard

We study feedback control over erasure channels with packet-dropouts. To achieve robustness with respect to packet-dropouts, the controller transmits data packets containing plant input predictions, which minimize a finite horizon cost function. To reduce the data size of packets, we propose to adopt sparsity-promoting optimizations, namely, `1-`2 and `2-constrained `0 optimizations, for which ...

Journal: :Fuzzy Sets and Systems 2014
Fei Han Gang Feng Yong Wang Jianbin Qiu Changzhu Zhang

This paper considers the problem of H∞ state feedback control for networked nonlinear systems under unreliable communication links with packet dropouts. The nonlinear plant in this paper is described by a Takagi–Sugeno (T–S) fuzzy model. The packet dropouts in both sensor-to-controller (S/C) and controller-to-actuator (C/A) channels are considered, which are modeled by Bernoulli processes. A ne...

Journal: :CoRR 2011
Masaaki Nagahara Daniel E. Quevedo

We investigate a networked control architecture for LTI plant models with a scalar input. Communication from controller to actuator is over an unreliable network which introduces packet dropouts. To achieve robustness against dropouts, we adopt a packetized predictive control paradigm wherein each control packet transmitted contains tentative future plant input values. The novelty of our approa...

Journal: :ISA transactions 2018
Ángel Cuenca J. Alcaina Julián Salt V. Casanova Ricardo Pizá

This paper introduces a packet-based dual-rate control strategy to face time-varying network-induced delays, packet dropouts and packet disorder in a Networked Control System. Slow-rate sensing enables to achieve energy saving and to avoid packet disorder. Fast-rate actuation makes reaching the desired control performance possible. The dual-rate PID controller is split into two parts: a slow-ra...

2010
Dongxiao Wu Jun Wu Sheng Chen

We consider a class of networked control systems (NCSs) where the plant has time-varying norm-bounded parameter uncertainties, the network only provides a limited number of simultaneous accesses for the sensors and actuators, and the packet dropouts occur randomly in the network. For this class of NCSs with uncertainties and access constraints as well as packet dropouts, we derive sufficient co...

2010
Shu Yin Li Yu Wenan Zhang

This paper is concerned with the stabilization problem for networked control systems (NCSs) with packet-dropouts and delays. A state estimator is incorporated into the controller node, and the controller uses the estimated states when packet-dropouts occur. By using such a estimator-based controller, the closed-loop NCS is modelled as a discrete-time switched systems with both stable and unstab...

2006
Payam Naghshtabrizi João P. Hespanha

We propose a numerical procedure to design a linear output-feedback controller for a remote linear plant in which the loop is closed through a network. The controller stabilizes the plant in the presence of delays, sampling, and packet dropouts in the (sensor) measurement and actuation channels. We consider two types of control units: anticipative and non-anticipative. In both cases the closedl...

Journal: :Automatica 2012
Wann-Jiun Ma Vijay Gupta

We analyze the stability of a constrained piecewise continuous hybrid system that is controlled by a receding horizon controller across an unreliable communication channel. We assume the presence of a buffer at the actuator to store the control input sequence received from the controller to compensate for any possible packet dropouts in future transmissions. Input-to-state stability is consider...

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