期刊：
Applied Mechanics and Materials,2013年333-335:597-600 ISSN：1660-9336
通讯作者：
Hu Yaobin
作者机构：
[Hu Liangbin; Hu Yaobin; Cheng Qiang] Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
通讯机构：
[Hu Yaobin] U;Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
会议名称：
2nd International Conference on Measurement, Instrumentation and Automation (ICMIA 2013)
会议时间：
APR 23-24, 2013
会议地点：
Guilin, PEOPLES R CHINA
会议主办单位：
[Hu Yaobin;Hu Liangbin;Cheng Qiang] Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
会议论文集名称：
Applied Mechanics and Materials
关键词：
Denoising Process;Power Line Noise;Wavelet Analysis;Wiener Filter
摘要：
Interfering noise of power line is one of the important factors which affects the quality of power line communication (PLC). Its frequency spectrum has the character of the 1/f process and the great autocorrelation. The wavelet analysis is an important signal-processing tool. Selecting suitable wavelet analysis can turn non-white noise to white noise, followed by wiener filtering, we can achieve the purpose of denoising. This paper introduces a denoising method of combining wavelet analysis with wiener filtering. Experiment proves this method has a strong feasibility and practical value.
作者机构：
University of South China, School of Mechanical Engineering, Hengyang, China, 421001;Guangzhou University, School of Mechanical and Electrical Engineering, Guangzhou, China, 510006;Huazhong University of Science and Technology, School of Mechanical Science and Engineering,Wuhan, C
会议名称：
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
会议时间：
2011-11-18
会议地点：
广州
会议论文集名称：
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)论文集
关键词：
B/S structure;Fault diagnosis;Database
摘要：
The feasibility and superiority of the remote fault diagnosis system based on B/S structure is analyzed in this paper. The B/S structure is introduced and compared with C/S structure briefly. The paper summarize frame and main function module of the remote fault diagnosis system and introduce its key technology, such as data acquisition technology, data transmission technology between server and client, intelligent diagnosis technology, database technology etc. The hybrid model of support vector machine (SVM) and hidden markov models(HMM) is used as a intelligent diagnosis method of the system, and a new design which could improve the integrity and privacy of the system database data is applied. According to the diagnostic results to all kinds of simulated faults in the Bently vibration test bed, it shows the system is not only stable, reliable and high accuracy, but also has a certain application value to engineering.
摘要：
Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001]α rods/laths are dominant in the Zr-rich core regions of the as-quenched sample after a solution treatment at 430°C. More significantly, these Zr-rich particles served as favourable sites for heterogeneous nucleation of the Zn-rich β-type phase during subsequent isothermal ageing at 180°C. This research provides a potential route to engineer precipitate microstructure for better strengthening effect in the Zr-containing Mg alloys.
通讯机构：
[Xie, Jing] U;Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
会议名称：
the 2012 International Conference on Manufacturing Engineering and Automation (2012年制造工程与自动化国际会议(ICMEA2012))
会议时间：
2012-11-16
会议地点：
广州
会议主办单位：
[Xie, Jing;Liu, Qiong;Jiang, Yan;Wang, Yulin;Zhu, Huiling] Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
会议论文集名称：
the 2012 International Conference on Manufacturing Engineering and Automation (2012年制造工程与自动化国际会议(ICMEA2012))论文集
关键词：
Density Method;Water Cut of Crude Oil;Measuring Device;Error
摘要：
As a key datum in the petrochemical industry, Water content ratio plays an important role in dehydration, storage selling and petroleum refining. According to the oil well production site, this thesis is based on the oil-water mixture’s density to calculate the water-rate in petroleum, carried on the error analysis to this measuring method, and assessed the scope which this metering equipment is suitable. The wellhead drop back pressure device is effective in monitoring oil wells, to achieve the single well production of display, and when the single well is not working properly, you can discover and resolve problems. The system features are simple structure, easy to carry, stability of Measurement and easy maintenance.
