Journal ArticleDOI
Adaptive Indirect Fuzzy Sliding Mode Controller for Networked Control Systems Subject to Time-Varying Network-Induced Time Delay
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TLDR
Simulation results show that the proposed fuzzy sliding mode controller is capable of controlling nonlinear dynamical systems over a network, which is subject to bounded external disturbances, time-varying network-induced delays, and packet losses with adequate performance.Abstract:
Two major challenges in networked control systems are the time-varying networked-induced delays and the packet losses. To alleviate these problems, this study presents a novel fuzzy sliding mode controller, where a fuzzy system is used to estimate the nonlinear dynamical system online, and the networked-induced delay is handled by Pade approximation. The problem of packet losses is handled by viewing them as large time-varying delays in the system. The sliding mode-based design procedure used ensures the stability and the robustness of the proposed controller in the presence of disturbances and time-varying networked-induced time delays. Using an appropriate Lyapunov function, it is proved that the tracking error converges to the neighborhood of zero asymptotically. Furthermore, since the adaptation laws of the parameters are derived by using of the Lyapunov function, these laws are also found to be stable. Simulation results show that the proposed fuzzy sliding mode controller is capable of controlling nonlinear dynamical systems over a network, which is subject to bounded external disturbances, time-varying network-induced delays, and packet losses with adequate performance.read more
Citations
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Journal ArticleDOI
Adaptive Fuzzy Backstepping Tracking Control for Strict-Feedback Systems With Input Delay
TL;DR: A novel adaptive fuzzy tracking control scheme is developed to guarantee all variables of the closed-loop systems are semiglobally uniformly ultimately bounded, and the tracking error can be adjusted around the origin with a small neighborhood.
Journal ArticleDOI
Disturbance Observer-Based Integral Sliding-Mode Control for Systems With Mismatched Disturbances
TL;DR: The disturbance observer is proposed to generate the disturbance estimate, which can be incorporated in the controller to counteract the disturbance, and two approaches are proposed to design the controller and disturbance rejection gains.
CORRESPONDENCE - Takagi-Sugeno Fuzzy-Model-Based Fault Detection for Networked Control Systems with Markov Delays
TL;DR: In this article, a Takagi-Sugeno (T-S) model is employed to represent a networked control system (NCS) with different network-induced delays and a parity-equation approach and a fuzzy-observer-based approach for fault detection of an NCS were developed.
Journal ArticleDOI
Sliding mode control of hybrid switched systems via an event-triggered mechanism
TL;DR: An event-triggered sliding mode control law is developed to drive the resultant closed-loop system trajectories into a bounded switched region and maintain them therein for subsequent periods.
Journal ArticleDOI
Adaptive Fuzzy Hierarchical Sliding-Mode Control for a Class of MIMO Nonlinear Time-Delay Systems With Input Saturation
TL;DR: An adaptive fuzzy hierarchical sliding-mode control method for a class of multiinput multioutput unknown nonlinear time-delay systems with input saturation is proposed and theoretically proved that all the signals in the closed-loop system together with the proposed sliding surfaces are uniformly ultimately bounded under the designed adaptive fuzzy controllers.
References
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Journal ArticleDOI
Network-Induced Constraints in Networked Control Systems—A Survey
TL;DR: The main methodologies suggested in the literature to cope with typical network-induced constraints, namely time delays, packet losses and disorder, time-varying transmission intervals, competition of multiple nodes accessing networks, and data quantization are surveyed.
Journal ArticleDOI
Sliding-Mode Control With Soft Computing: A Survey
Xinghuo Yu,Okyay Kaynak +1 more
TL;DR: The state of the art of recent developments in SMC systems with SC is provided, examining key technical research issues and future perspectives.
Journal ArticleDOI
Network-Based ${{\cal H}}_{\!\!\!\infty }$ Output Tracking Control
Huijun Gao,Tongwen Chen +1 more
TL;DR: A new model based on the updating instants of the holder is formulated, and a linear matrix inequality (LMI)-based procedure is proposed for designing state-feedback controllers, which guarantee that the output of the closed-loop networked control system tracks theoutput of a given reference model well in the Hinfin sense.
Journal ArticleDOI
Indirect adaptive fuzzy sliding mode control: Part I: fuzzy switching
J. Wang,Ahmad B. Rad,P. T. Chan +2 more
TL;DR: It is proved that the proposed adaptive scheme can achieve asymptotically stable tracking of a reference input with a guarantee of the bounded system signals and the steady error is also alleviated.
Journal ArticleDOI
The fusion of computationally intelligent methodologies and sliding-mode control-a survey
TL;DR: This paper surveys how some "intelligence" can be incorporated in sliding-mode controllers by the use of computational intelligence methodologies in order to alleviate the well-known problems met in practical implementations of SMCs.