This paper analyzes the existing zeroing neural network (ZNN) models from the perspective of control theory. It proposes an exclusive ZNN model for solving the dynamic complex-valued matrix Moore-Penrose inverse probl...
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This paper analyzes the existing zeroing neural network (ZNN) models from the perspective of control theory. It proposes an exclusive ZNN model for solving the dynamic complex-valued matrix Moore-Penrose inverse problem: the complex-valued zeroing neural network (CVZNN). Then, a method of constructing a special type of saturation-allowed activation function is defined, which relaxes the convex constraint on the activation function when constructing the ZNN model. The convergence of the CVZNN model activated by proposed saturation-allowed functions is analyzed. Besides, the robustness of the CVZNN model under different types of noise interference is investigated based on the perspective of the control theory. Finally, the effectiveness and superiority of the CVZNN model are illustrated by simulation experiments. (C) 2020 Elsevier Inc. All rights reserved.
A novel parallel computing method for computational fluid dynamics in engineering is presented. It makes three dimensional numerical simulations of fluidstructure interaction problems feasible for most engineers. Wind...
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A novel parallel computing method for computational fluid dynamics in engineering is presented. It makes three dimensional numerical simulations of fluidstructure interaction problems feasible for most engineers. Wind-induced vibration problems of long-span bridges with three dimensional turbulent flow simulations are implemented on the clusters built with the present parallel computing method and get a direct benefit in engineering.
Due to China's west to east power transmission depth implementation, the long distance and large capacity power transmission solution is widely used. But the two technologies, the series capacitor compensation tec...
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Due to China's west to east power transmission depth implementation, the long distance and large capacity power transmission solution is widely used. But the two technologies, the series capacitor compensation technology and the high voltage direct current transmission technology, which are used as the solution, will both generate sub-synchronization oscillation issues. In recent years, many power plants in China take sub-synchronous oscillation phenomenon;therefore, the research has significant engineering application value and practical significance to the suppression technology and online prediction of sub-synchronization oscillation. In this paper, by means of time domain simulation method and complex torque coefficient method and the test signal method, the three method are more comprehensive and accurate measurement the existing condition and prediction risk coefficient of the adjacent condition, timely find and take measures to eliminate power system sub-sychronization oscillation, providing technical analysis tools to ensure safe and stable operation of power system.
The progress and characteristics of gas discharge is studied in this paper by numerical simulation. A program based on the FE-FCT method in its full two-dimension form is developed and employed for the solution of tra...
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ISBN:
(纸本)9781424410224
The progress and characteristics of gas discharge is studied in this paper by numerical simulation. A program based on the FE-FCT method in its full two-dimension form is developed and employed for the solution of transport equations of charged species under the effect of space-charge electric field. Results of two-dimensional simulation of cylindrically symmetric streamers in air between Point-plane electrodes are presented. The formation and propagation of streamer is numerically observed. The electric field distribution, streamer speed, radius of streamer channel predicted by the model is in good agreement with experimental measurement. The influence of applied voltage on the streamer characteristic is also investigated.
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