摘要：
The automatic and intellectualized reconstruction is the important way to improve and expand the traditional instrumental function. The surface roughness is an important indicator of effecting parts and products performance. On the basis of using precision measurement technology, electronic technology and computer technology synthetically, the principle and method of the automatic and intellectualized reconstruction of JB-3C Type Surface Roughness Measuring Instrument is mainly introduced, which is to reconstruct the hardware circuit and develop function in view of the flaws that the data processing speed of the traditional instruments is slow and they can not print the curve very abundant and even that operating steps are complicated and other shortcomings. And we adopt Matlab and VC++ mix programming to gather, process, demonstrate, analyze and compute data, which has high applicability and performance price ratio.
摘要：
The development status of profile modification technology and slotting process are described, the paper proposed slotting profile modification process, in view of the advantages of slotting processing. The modification curve of modification gear is fitted in the form of multi-segment involutes by resembling the principle of tooth profile modification on the grinding machine by using generating principles and changing the pressure angle, the formula of modification pressure angles of slotting cutter corresponding sections of involutes deduced,the modification profile of slotting cutter is designed.
作者机构：
[Yue, X.] S China Univ Technol, Sch Mech & Automot Engn, Guangzhou, Guangdong, Peoples R China.;[Zhang, C. L.; Zhu, H. Y.] Guangzhou Univ, Sch Mech & Elect Engineer, Guangzhou, Peoples R China.;[Li, J.] Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
通讯机构：
[Yue, X.] S;S China Univ Technol, Sch Mech & Automot Engn, Guangzhou, Guangdong, Peoples R China.
会议名称：
The 4th International Conference on High Speed Machining(第四届高速加工国际会议 ICHSM'2010)
会议时间：
2011-05-28
会议地点：
武汉
会议主办单位：
[Yue, X.] S China Univ Technol, Sch Mech & Automot Engn, Guangzhou, Guangdong, Peoples R China.^[Zhang, C. L.;Zhu, H. Y.] Guangzhou Univ, Sch Mech & Elect Engineer, Guangzhou, Peoples R China.^[Li, J.] Univ South China, Sch Mech Engn, Hengyang, Peoples R China.
会议论文集名称：
The 4th International Conference on High Speed Machining(第四届高速加工国际会议 ICHSM'2010)论文集
关键词：
Fault diagnosis;Pump;HMM;SVM;Hybrid model
摘要：
A hybrid support vector machine (SVM) and hidden Markov model (HMM) model was introduced into the fault diagnosis of pump. This model had double layers: the first layer used HMM to classify preliminarily in order to get the coverage of possible faults; the second layer utilized this information to activate the corresponding SVMs for improving the recognition accuracy. The structure of this hybrid model was clear and feasible. Especially the model had the potential of large-scale multiclass application in fault diagnosis because of its good scalability. The recognition experiments of 26 statuses on the ZLH600-2 pump showed that the recognition capability of this model was sound in multiclass problems. The recognition rate of one bearing eccentricity increased from SVM's 84.42% to 89.61% while the average recognition rate of hybrid model reached 95.05%. Although some goals while model constructed did not be fully realized, this model was still very good in practical applications.
摘要：
Slotting process used to achieve modify heavy-loading mine gear.According to the pitch circle radius of gear tooth profile modification is difficult to accurately draw, reverse-designed the profile of the modification slotting cutter fold may occur on the cusp, generating simulation for slotting profile modification is implemented using MATLAB based on engagement theory of slotting process,which can test whether the pitch circle is set to reasonable, to avoid resulting the top or root of conjugate gear’s profiles be cut,achieved the adaptive design of profile modification slotting cutter.
摘要：
Cam mechanism has advantages of compact structure, high driving accuracy, good dynamic characteristics, smooth motion, etc. It is implemented that components transmission among the multiple-station of deep groove ball bearing assembly machine by use of cam drive system. Cam followers depending on cam profile achieve the desired law of motion. The core of cam design is the exact cam profile's design. The quick and easy method of cam profile design through Pro/E software is introduced in follow. Components' transmission requirements can be met by cam drive system, which is proved through the analysis of motion simulation.
作者机构：
[Qiu, ChangJun; Zhou, Ju; Cheng, Xiyang] Univ S China, Sch Mech Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Zhou, Ju] U;Univ S China, Sch Mech Engn, Hengyang 421001, Peoples R China.
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
会议主办单位：
[Zhou, Ju;Qiu, ChangJun;Cheng, Xiyang] Univ S China, Sch Mech Engn, Hengyang 421001, Peoples R China.
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：
Micro-forging;Laser cladding;Microstructures;Finite element simulation
摘要：
In the whole process of micro-forging regulation laser cladding layer, the microstructure structure of cladding layer would change. In order to establish the microstructure evolution of the whole process, firstly re-crystallization model was set up based on Avrami equation and experimental data, and various material constants were gained with regress; secondly calculation for the model was carried out on DEFORM-2D,then the results were compared with experimental data, which showed that calculation results of this model kept good consistency with experimental data, and proved that the model could be applied in a full size finite element simulation of the micro forging process.
摘要：
The effect of catalyst coating distributing on the reactor performance for methane steam reforming(MSR) was numerically investigated. In calculation, the amount catalyst loaded on the microreactor wall was fixed but the catalyst active site density was distributed according to arithmetic progression along the flow direction. Results show that it is possible to get the higher conversion of CH4 and output of H2 due to the higher availability ratio of catalyst surface active sites at this distribution. And this distribution effect is more remarkable at higher space velocity or lower reaction temperature, however, there exists an optimal distribution which can reach the highest CH4 conversion and H2 production at 900K.
通讯机构：
[Tang, Yonghui] U;Univ South China, Sch Mech Engn, Hengyang 421001, Hunan, Peoples R China.
会议名称：
International Conference on Manufacturing Engineering and Automation
会议时间：
DEC 07-09, 2010
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Tang, Yonghui;Lin, Guoxiang] Univ South China, Sch Mech Engn, Hengyang 421001, Hunan, Peoples R China.^[Zhang, Chunliang] Guangzhou Univ, Sch Mech & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Condition Monitoring;Short Time Fourier Transform (STFT);Roller;Hidden Markov Model (HMM)
摘要：
A kind of signal build mould and identification tool for roller of rolling mill was discussed. Basic algorithm of Hidden Markov model (HMM) theory was presented. For ψ500×2 shrewd roller of rolling mill, the paper led Short-time Fourier transform (STFT) into draw the feature of roller signal and chose Continues Gaussian Hidden Markov Model (CGHMM) to build and identify mould. The experiment installation major included: ψ500×2 shrewd rollers and roller performance test control work of rolling mill control machine as well as a set of online state inspection system. The experiment data was collected by two kinds: roller rotational speed from low to high and from high to low. The experiment shows that this system has better identification rate, and proves that this system is effective.
