This paper proposes an artificial neural network (ANN) based time/space separation modeling approach to predict nonlinear parabolic DPSs. First, the spatial-temporal output is divided into a few dominant spatial basis...
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This paper proposes an artificial neural network (ANN) based time/space separation modeling approach to predict nonlinear parabolic DPSs. First, the spatial-temporal output is divided into a few dominant spatial basis functions and low-dimensional time series by PCA method. Then a three-layer feed-forward ANN is identified by low-dimensional time series, where the improved group search optimization (GSO) is proposed to optimize the connection weights and thresholds to solve the problem of falling into the local optima. Finally, the nonlinear spatiotemporal dynamics is determined after the time/space reconstruction. Simulations are presented to demonstrate the accuracies and effectiveness of the proposed methodologies.
An automatic sleep level estimation method was developed for monitoring and regulation of day time nap sleep. The recorded nap data is separated into continuous 5-second segments. Features are extracted from EEGs, EOG...
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ISBN:
(纸本)9781457702150
An automatic sleep level estimation method was developed for monitoring and regulation of day time nap sleep. The recorded nap data is separated into continuous 5-second segments. Features are extracted from EEGs, EOGs and EMG. A parameter of sleep level is defined which is estimated based on the conditional probability of sleep stages. An exponential smoothing method is applied for the estimated sleep level. There were totally 12 healthy subjects, with an averaged age of 22 yeas old, participated into the experimental work. Comparing with sleep stage determination, the presented sleep level estimation method showed better performance for nap sleep interpretation. Real time monitoring and regulation of nap is realizable based on the developed technique.
This paper focuses on the admissibility condition for fractional-order singular system with order α∈(0, 1). The definitions of regularity, impulse-free and admissibility are given first, then a sufcient and necessar...
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This paper focuses on the admissibility condition for fractional-order singular system with order α∈(0, 1). The definitions of regularity, impulse-free and admissibility are given first, then a sufcient and necessary condition of admissibility for fractional-order singular system is established. A numerical example is included to illustrate the proposed condition.
This paper focuses on the problem of adaptive output feedback stabilization for a class of stochastic nonlinear system with unknown control directions. By using a linear state transformation, the unknown control coeff...
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This paper focuses on the problem of adaptive output feedback stabilization for a class of stochastic nonlinear system with unknown control directions. By using a linear state transformation, the unknown control coefficients are lumped together, such that the original system is transformed to a new system for which control design becomes feasible. By employing the input-driven observer, a novel adaptive neural network (NN) output-feedback controller which only contains one adaptive parameter is developed for such systems by using backstepping technique and NNs' parameterization. The proposed control design guarantees that all the signals in the closed-loop systems are 4-moment semi-globally uniformly ultimately bounded.
This paper deals with the model reduction problem of two-dimensional(2-D) discrete-time systems described by the Roesser *** from existing fuU-frequency methods,we propose a finite-frequency model reduction method for...
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ISBN:
(纸本)9781479900305
This paper deals with the model reduction problem of two-dimensional(2-D) discrete-time systems described by the Roesser *** from existing fuU-frequency methods,we propose a finite-frequency model reduction method for 2-D Roesser *** the generalized Kalman-Yakubovich-Popov(GKYP) lemma for 2-D systems,sufficient conditions are developed for model reduction of 2-D Roessor systems over low-frequency,and middle-frequency,*** proposed finite-frequency model reduction method can get a better approximation accuracy than the existing full-frequency ones over the finite-frequency *** effectiveness of the proposed method is illustrated by a numerical example.
The model of NCS (Networked control Systems) with output feedback controller is presented for the case when the network- induced random time-varying delays are bounded and the upper bound of which is longer than one s...
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ISBN:
(纸本)9781479902590
The model of NCS (Networked control Systems) with output feedback controller is presented for the case when the network- induced random time-varying delays are bounded and the upper bound of which is longer than one sampling period. Thus we established a discrete-time jump system model with Markov delay. Based on this, this paper gives the optimization method to design stabilizing controllers. This paper generalizes previous results on delay-less output feedback control systems and state feedback systems with Markov time delay. Theoretical analysis and simulation on a two input two output system with Markov time delay show that the output feedback controller we proposed can make the system stable.
The human-computer interaction(HCI) is now playing a great role in computer *** study introduces an automatic document control technique which is based on the human hand waving *** recognition of hand movement is real...
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The human-computer interaction(HCI) is now playing a great role in computer *** study introduces an automatic document control technique which is based on the human hand waving *** recognition of hand movement is realized according to the surface electromyography(sEMG).A collector is set on the *** sEMG signal is recorded and conveyed to a PC terminal by using wireless *** automatic algorithm is developed in order to extract the characteristics of sEMG,recognize the waving movements,and transmit to document control *** developed human-computer interaction technique can be used as a new gallery for teaching,as well as an assistant tool for disabled person.
The human-computer interaction (HCI) is now playing a great role in computer technology. This study introduces an automatic document control technique which is based on the human hand waving movements
The human-computer interaction (HCI) is now playing a great role in computer technology. This study introduces an automatic document control technique which is based on the human hand waving movements
In this paper, we consider fast and desired consensus of directed network via pinning control. First, we provide a sufficient condition for the stability of desired consensus algorithm. Second, we investigate the prob...
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In this paper, we consider fast and desired consensus of directed network via pinning control. First, we provide a sufficient condition for the stability of desired consensus algorithm. Second, we investigate the problem of selecting optimal pinned nodes for driving fastest consensus, which is formulated as an Mixed-Integer Semidefinite Program. Finally, we illustrate all the results by simulating on some typical directed networks.
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