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Tianjin, China

Tianjin University of Technology and Education is a university in Tianjin, China under the municipal government.http://www.tute.edu.cn/ Wikipedia.

Mei Q.,Whirlpool Corp. | Shan M.,General Electronics | Liu L.,Tianjin University of Technology and Education | Guerrero J.M.,University of Barcelona
IEEE Transactions on Industrial Electronics | Year: 2011

Maximum power point (MPP) tracking (MPPT) techniques are widely applied in photovoltaic (PV) systems to make PV array generate peak power which depends on solar irradiation. Among all the MPPT strategies, the incremental-conductance (INC) algorithm is widely employed due to easy implementation and high tracking accuracy. In this paper, a novel variable step-size incremental-resistance MPPT algorithm is introduced, which not only has the merits of INC but also automatically adjusts the step size to track the PV array MPP. Compared with the variable step-size INC method, the proposed scheme can greatly improve the MPPT response speed and accuracy at steady state simultaneously. Moreover, it is more suitable for practical operating conditions due to a wider operating range. This paper provides the theoretical analysis and the design principle of the proposed MPPT strategy. Simulation and experimental results verify its feasibility. © 2010 IEEE. Source

Zhang J.,Tianjin University of Technology and Education
Gait and Posture | Year: 2012

A gait analysis method based on continuous wave (CW) radar is proposed in this paper. Time-frequency analysis is used to analyze the radar micro-Doppler echo from walking humans, and the relationships between the time-frequency spectrogram and human biological gait are discussed. The methods for extracting the gait parameters from the spectrogram are studied in depth and experiments on more than twenty subjects have been performed to acquire the radar gait data. The gait parameters are calculated and compared. The gait difference between men and women are presented based on the experimental data and extracted features. Gait analysis based on CW radar will provide a new method for clinical diagnosis and therapy. © 2012 Elsevier B.V. Source

Jian C.,Tianjin University of Technology and Education
Journal of Networks | Year: 2013

Due to the weaknesses of the generalization capability and diagnostic accuracy of identification of the improve extension neural network, we have found the method, Shadowed Sets, to improve the ENN. We can get the algorithm description through analyzing the Shadowed Sets and extension neural network system structure, making a comparison on a variety of extension neural network classifier performance, and detailed analyzing the Shadowed Sets of training data selection method. Finally, we can make a detailed experimental comparison through improved extension neural network (IENN) and traditional extension neural network (ENN), and at the same time get the results of the experiments by the Steam Turbine Power Generation Set Vibration Diagnostic tests. The experiments show that: we can use the shadow data set selection method and obtain high-quality training sample to enhance and improve the performance of ENN; selecting the nuclear data and boundary data as training ENN training data is a scientific and reliable; the improved extension neural network has been improved not only in the accuracy of classification, but the generalization ability. © 2013 ACADEMY PUBLISHER. Source

Dai Y.,Tianjin University of Technology and Education
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2011

A reliability evaluation test plan of NC machine tools based on exponent distribution was investigated. At first the evaluation test plan type was confirmed as timing censored lifetime test with replacement, secondly the minimum failure number was discussed to get certain confidence interval, and then the condition that the product of machine tool number and censored time should satisfied was analyzed to get the minimum failure number. At last, the optimum plan about machine tool number and censored time were put forward. Source

Li L.,Tianjin University of Technology and Education
European Journal of Engineering Education | Year: 2015

A case study of project-based learning (PBL) implemented in Tianjin University of Technology and Education is presented. This multidiscipline project is innovated to meet the novel requirements of industry while keeping its traditional effectiveness in driving students to apply knowledge to practice and problem-solving. The implementation of PBL is described with emphasis in relation to the ability cultivation. The feedback from students shows positive support for the innovations. © 2014 SEFI. Source

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