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6 results on '"Yue, Donghai"'

4. Prediction of Regional Economic Trend with f Improved BP Neural Network Algorithm

Author

Yue Donghai, Jiang Zhu, Liu Anmin, and Guangxin Liu

Subjects
Artificial neural network, business.industry, Computer science, Artificial intelligence, business
Abstract

Traditional BP neural network-based prediction method cannot accurately predictregional economic trend, and the operation efficiency is low. To this end, a method based on improved BP neural network algorithm is developed to predict regional economic trend. The Cobb-Douglas production function is used to select the most influential number of working people and economic investment in fixed assets, fiscal expenditure, gross foreign export value, retail sales of social consumer goods index as the sample data and normalized. The error of sample data is calculated by TangXC_BPModel model, and the the weights are modified uniformly so that and the regional economic trend is predicted accurately.

Published
2020

6. An overview of control schemes for hydraulic shaking tables.

Author

Yao, Jianjun, Dietz, Matt, Xiao, Rui, Yu, Han, Wang, Tao, and Yue, Donghai

Subjects
SHAKING table tests, EARTHQUAKE engineering, HYDRAULIC servomechanisms, ACTUATORS, NONLINEAR analysis, PERFORMANCE evaluation
Abstract

Shaking table testing is a common experimental method in earthquake engineering for performance assessment of structures subjected to dynamic excitations. As most shaking tables are driven by servo hydraulic actuators to meet the potentially significant force stroke demand, the review is restricted to hydraulic shaking tables. The purpose of the control systems of hydraulic shaking tables is to reproduce reference signals with low distortion. Accurate control of actuators is vital to the effectiveness of such apparatus. However, the system dynamics of a shaking table and the specimens to be tested on the shaking table are usually very complex and nonlinear. Achieving the control goal can prove to be challenging. A variety of closed- and open-loop control algorithms has been developed to solve different control problems. With the focus placed on the control schemes for hydraulic shaking tables, the paper reviews algorithms that are currently used in the testing industry, as well as those which are the subject of academic and industrial research. It is by no means a complete survey but provides key reference for further development. [ABSTRACT FROM AUTHOR]

Published
2016
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