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Online since: September 2013
Authors: Zuo Xun Wang, Tao Hao, Ying Chun Zhang, Xiang Yu Sun
Design and Control of Genetic Algorithm-based Multi-station LED chip Waxing Machine Xiangyu Sun1, a, Yingchun Zhang1,b, Zuoxun Wang1,c and Tao Hao1,d 1School of Electrical Engineering and Automation Qilu University of Technology Jinan, China.
Introduction LED lighting material has numerous advantages, such as pollution, low energy consumption, long life, and is widely used in modern lighting project.The LED lighting industry has broad market and prospect.
The matching among the parameters Kp, Ki, Kd is the key standard of the PID performance indicators.
Online since: May 2014
Authors: Pakkaton Nanphan, Tanida Mamodee, Kasikrit Damkliang
The learning material includes tutorial animations demonstrating different forms of handwriting.
The key change is that the user must write a letter over the marks sequently.
Proc of the Electrical Engineering Computing Science and Automatic Control (CCE), 2011 8th International Conference on 26 - 28 Oct. 2011, pp. 1 – 6. doi: 10.1109/ICEEE.2011.6106583
Online since: January 2012
Authors: Ze Fu Bao, Jiang Ping Wang, Ya Zhou Jiang
Stone wheel Based on the above principles and methods of face gear grinding, we can resolve three key issues: the direction of round billet transmission, wheels and wheel billet into a meshing relationship between the developments, the anchor ring grinding wheel section involution silhouette exhibition becoming.
(5) The is the critical speed, r/min; The is the acceleration of gravity; The is density of the material for the screw, steel is;The is the bottom diameter of the screw cross-sectional area, mm2; The is the screw bottom diameter, mm; The is the screw the elastic modulus,;The is the screw bottom diameter of the moment of inertia,mm4;The is the distance between supports, mm; The is the coefficient depends on the screw installed Table 3; Generally, taking the safety factor consideration, we will take the rotational speed high (according to Figure 3), if it cannot satisfy this condition, you should increase (increase) or reduce
In the engineering calculations, it is said to be the rated fatigue endurance which refers to a number of ball screw in the same dimensions, specifications and precision, they rotate under the same condition, in which 90% of them the spalling fatigue does not occur in the case of the total operation rpm. or you can use the total ration time or total distance time instead.
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 2010
Authors: Li Cui, Xian Lei Hu, Xianghua Liu
Analysis of Leveling Strategy for a plate Mill Li Cui1, a, Xianlei Hu1, b and Xianghua Liu1, c 1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, China a cuilitianda@163.com, bhu_xianlei@263.net, cliuxh@mail.neu.edu.cn Keywords: Leveling strategy, Plate mill, Plastic deformation ratio Abstract.
Plastic deformation ratio is one of the most important factors, which is considered as the feature of fine plates and it should be at least 70% for engineering application [4~7].
Leveling for plate is an alternating loading and unloading elastic-plastic process, so the material obeys to Hooke's Law in the elastic range, but when the plastic deformation occurs, it obeys Prandtl-Reuss incremental plastic theory and satisfies the Mises yield criterion.
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.
Online since: May 2016
Authors: Zhe Liu, Qing Jian Liu, Bo Li, Jing Chuan Dong, Yan Yu Ding, Wang Tai Yong
A Method of Pitch Error Compensation for the Open Numerical Control System Yanyu Ding1, Taiyong Wang1, Qingjian Liu2, a*, Jingchuan Dong1, Bo Li1 and Zhe Liu1 1 Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, China 2 School of Mechanical Engineering, Tianjin University, Tianjin, China ashuzhongziyou@sohu.com (corresponding author) Keywords: Pitch error compensation, Cubic spline, Spline interpolation Abstract.
According to the statistical material [1], more than 80% of the new machine can meet the design specifications only after commissioning when installed [2]; And more than 80% of the machine tools are under the condition of ultra properties and capacities after operating a period of time.
Online since: February 2015
Authors: Liang Liang, Qing Wei Dong, Li Peng Yang
According to the above problems, key projects in henan province department of education fund support, build a intelligent designing platform with the quenching machine tool based on NEI.
The VRML scene graph contains all of the node levels of the 3d world's static characteristics: geometric relations, the qualitative material, texture, geometry transformation, light, viewpoints and nested structure.
[4] MZ.Luo;El Kamel, A.Gong,Systems,Man, and Cybernetics (SMC), 2011 IEEE International Conference , 2011(10):9-12 [5] Genbao Zhang,Dongying Li, Jie Liu and Jian Liu, Nc machine tools reliability evaluation for incomplete maintenance, in Chinese, Journal of mechanical engineering,2013,49(23):136-141
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