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A fuzzy sliding mode controller based on radial basis function neural network (RBFNN) for permanent magnet synchronous machine (PMSM) is investigated in this paper, in which direct torque control (DTC) concept, variable structure control and space vector modulation (SVM) are integrated to achieve high performance. Fuzzy logic is used to adjust the gain of the corrective control of the sliding mode...
Sentiment classification has attracted increasing interest from natural language processing. The goal of sentiment classification is to automatically identify whether a given piece of text expresses positive or negative opinion on a topic of interest. This paper presents the standpoint that uses individual model (i-model) based on artificial neural networks (ANNs) to determine text sentiment classification...
An efficiency optimization vector control scheme based on back propagation (BP) is presented in this paper. The controller is designed to generate d-axes currents command and q-axes currents command simultaneously. In order to achieve a robust BP efficiency optimization vector control from variation of motor parameters, an online learning algorithm is employed. Results of experiments are provided...
The neural network response surface method optimized by genetic optimization algorithm has been proposed to calculate the dynamic reliability of stochastic structure with TMD and MTMD, and a contrast analysis of dynamic reliability between them has been processed. The method has both the advantages of neural network response surface method and the global search of GA, which can approach to optimum...
This paper presented a nonlinear voltage modeling procedure of a proton exchange membrane fuel cell (PEMFC) stack by neural networks based on particle swarm optimization (PSO). PEMFC stack is a complex nonlinear system which is hard to model by traditional ways. So neural networks based on particle swarm optimization (PSONN) was developed to identify a nonlinear PEMFC stack voltage model. In the paper,...
In this paper, a novel scheme cooperative MAC for multi-hop multi-radio wireless mesh networks (WMNs) is proposed to improve the performance of the IEEE 802.11s MAC draft protocol. The proposed scheme allows transmitter (cooperative source node) to request multiple intermediate nodes for cooperative transmission to receiver (cooperative target node) when the direct transmission leads to throughput...
In paper [1], N.A.Sheikh uses regular infinite matrices (ank)n,k=1infin to define A-frame. This is a kind of generalized frames. In this paper, we study the stability of A-frame under perturbations. Several meaningful results are obtained.
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