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Online since: November 2011
Authors: Xiu Ping Wang, Feng Ge Zhang
Finite Element Analysis of Magnetic Field Modulation Effect of Brushless Doubly Fed Machine Xiuping Wang1a and Fengge Zhang1b School of Electrical Engineering, Shenyang University of Technology, Shenyang, China a E-mail: wangxpmail@163.com b E-mail: fgzhang318@sina.com Keywords: Brushless Doubly Fed Machine, magnetic field moudation, rotor stucture, pole numbers Abstract.
Common salient pole reluctance rotor is composed of iron magnetic material (Fig. 2(a)), which completes rotor magnetic field modulation for two stator windings by producing harmonic field for magnetic field asymmetrical distribution.
Conclusion At present, BDFM has not been used in industrial and agricultural production, the key reason for having not rotor with higher magnetic field modulation effect.
Online since: August 2012
Authors: He Qing Xie, Qin Xiang Xia, Zhe Lin Li, Wei Qi Zong
Contour Extraction for Images of High Temperature Long Shaft Heavy Forgings Qinxiang Xia1,a, , Zhelin Li1,b, Weiqi Zong3,c, Heqing Xie3,d 1 School of Mechanical &Automotive Engineering,South China University of Technology,Guangzhou,510640,P.R.China ameqxxia@scut.edu.cn(corresponding author), bgzwoods@qq.com, czongweiq@cssc-gzs.com, dgzsxhq@163.com Keywords: Long-shaft Heavy Forging; High Temperature; Image Processing; Contour Abstract.
During forging, the forgings are measured on line for their diameter, straightness, roundness and other parameters which can be used to guide subsequent processing, with the hope to increase accuracy of forging and material utilization rate.
Acknowledgement This paper is supported by Key Technology Project of Guangdong Province under Grant No.2009A080304004 and Basic Scientific Research Expenses-funded Project of Central University under Grant No. 2011ZM0109.
Online since: December 2010
Authors: Hai Liang Wang, Tong Wei Gao
Influences of Tunnel Excavation Blasting Vibration on Surface High-Rise Building Hailiang Wanga ,Tongwei Gaob, Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266510, Shandong, China aTLGCBP@263.net, btongwei_gao@126.com Keywords: Tunnel; Blasting; Vibration Velocity; Main Vibration Frequency; Amplification Effect; High-Rise Building Abstract.
Response characteristic of ground high building to tunnel excavation blasting vibration is related to building structure, building material, geological, blasting parameter, and spatial position relation of tunnel and building, monitoring equipment and so on.
Acknowledgements (1)National Natural Science Foundation (10672091) (2) Education Department Technology Planned Project of Shandong Province (011541803) Reference [1] Hailiang Wang: Engineering Blasting.
Online since: December 2010
Authors: Yan Chen, Zhao Hui Li, Xiu Quan Chen
In the whole supply chain system, five kinds of flows exist, namely capital flow, information flow, material flow, value flow and workflow[3].
To realize the information sharing among enterprises, the following factors should be considered: l Uniform the service standard l Key service information must be integrated, such as inventory information, planning information, production control and execution information, transportation information, sale information, business accounting information, etc.
[4] Xiao Yu-ming, Wang Yu-ming: Early-warning analysis on stability of supply chain based on entropy theory, Journal of Industrial Engineering Management in China, 2008,3, pp. 57-63
Online since: September 2013
Authors: Hai Yan Li, Yan Xia Yang
Standard dance move requires performers to dress in monochrome clothing and pastes special capable of emitting light mark in the key parts of the body (Such as joints, hip, elbow, wrist and so on).
It also can save material resources and financial resources.
Optical Precision Engineering, 2010,8 (2) :192-197
Online since: December 2013
Authors: Zi Yuan Qi, Ye Fei Wang, Xiao Li Xu
Experimental Material The brine composition is listed in Table 1.
(2) Wettability alteration is a key factor besides the IFT reduction which influences the imbibition recovery.
Journal of Petroleum Science and Engineering, 2000, 28(3): 123-143
Online since: December 2014
Authors: Jin Ling Yang, Xian Ge Cao, Xiang Lai Meng, Wei Cheng Zhang
Summary The point cloud data of the tunnel get by 3D laser scanning can provide a data basis to a large number of subsequent tunnel construction tasks, and can be used as the design basis of route adjustment of alignment and gradient, thus can greatly reduce the manpower required for the field data acquisition, material and financial resources.
According to the ground laser 3D scanning point cloud data can generate 3D visualization model which can provide a better simulation environment for the running of the train, therefore avoid the repeated collection of field data and save the engineering cost.
This research was financially supported by the Heilongjiang Province Department of Education Young Key Teachers Project (Grant NO. 1252G052) References [1] W.
Online since: December 2014
Authors: Bin Guo, Xin Ru Yin
ayinxr1990@163.com, b583065481@qq.com Key words: Property rights theory; Cost - benefit method; Housing maintenance fund; Supervision mode Abstract: This paper has found that supervision departments--the department of property management and their subordinate housing maintenance fund management center play the role of “athlete” and “goalkeeper” at the same time when they do supervision of using funds.
Maintenance engineering is too technical, thus housing fund management center can barely reconcile “authority” and “impartiality”[2].
Supervision costs consist of a lot of manpower, financial and material resources consumed in the process of monitoring activities.
Online since: October 2011
Authors: Hong Liang Wang, Hao Bin Dong, Liang Hua He, Xiao Qi Zhuang
Design OF The system algorithm and principle of the research Design of the system algorithm Design of the system algorithm is a key issue, thinking about that: 1, although the system is non-linear time-varying systems, it can be degenerate into the basic linear and non- time-varying systems with the dynamic characteristics. 2, PID control is a good control for the majority of the process in terms of performance and robustness; 3, The principle of PID control algorithm is simple, the physical meaning of parameters is clear, and the theoretical analysis meets the require of system application completely.
Permeability means that both sides of the fabric under the specified pressure, per unit time ,the gas flow through the weave material per unit area vertically, the unit (mm/s); While the performance of fabric being crossed the air when there is pressure on both sides, known as the permeability.
Journal of Engineering Geophysics. 2004.4,1(2)
Online since: February 2013
Authors: Xin Xu, Qi Bo Feng, Shi Qian Chen
And field experiments were carried out in Jinan West Railway Station of Beijing-Shanghai high-speed railway after the lab verification and engineering design of the monitoring system.
So the key to the whole system is the designing of an independent uninterrupted power which is stable, reliable and can get a variety of output voltage.
Sun exposure calculation results depend on many factors, such as the geographical position, the area meteorological material, annual average temperature, maximum temperature and minimum temperature, the longest continuous day of overcast and rainy, maximum wind speed and hail, snow and other special weather conditions.
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