Papers by Keyword: Practical Application

Abstract: The flexiable manufacturing system is an automated machinery manufacturing system which could adapt the changable processing object. In this paper, a flexiable manufacturing system based on practical application of engineering traning is introduced. The general scheme of this FMS and its work processes are presented. The control system is designed and its functions are described in details. Results show that the FMS achieves a satisfactory effect.

Abstract: The rapid development of network and information technology makes the network become the indispensable part in people's life. Network design uses email as a starting point, instead of actual letters. Then Happy Nets, BBS etc. are evolved from it, with virtual as their major feature. In the process of social networks evolution, the personal image transformed from the actual into the virtual one. All this has contributed to the birth of the social network, which then makes the contacts among people presenting the feature of network expansion and cost reduction. The popular social network nowadays is considered to be social plus network, namely, through the network, as a carrier, people are connected to form a virtual community with certain characteristics. Based on the genetic algorithm and genetic coding technology, the article is designed to make the optimal data analysis and create a optimistic cyber environment in the process of the social networks explosive development.

Abstract: The thermodynamics and kinetics factors about ladle vanadium extraction are introduced firstly. According to the real production in the resources comprehensive utilization test pilot of Pangang, the causes of temperature controlling, shortage of oxygen supply as well as the difficult for slag skimming are all analyzed in detail and the solutions are put forward at the same time. Under the real production conditions, if controlling the temperature of molten pool between 1450～1500°C,keeping the bottom blowing smoothly, meeting the oxygen supply of 1400 Nm3/h and adding adequate coolant at better time it will get good vanadium extraction results

Abstract: By now, it is hard for an effective determination of the engine abnormal sound according to the existing auscultation method based on human experiences and diagnosis aided by instruments. For this reason, the author presented an innovative method that was by the using of atomic absorption spectroscopy technology for a rapid determination of the engine crankshaft bearing abnormal sounds. Major metals contents (Cu and Pb) in 20 batches of Audi A6 engine lubricating oil were detected by atomic absorption spectrometry. Samples were taken from the oil of mileages from 5000km to 69000km and 3000km intervals. Then the databases of main metal contents of different driving miles were built within the same vehicle type. This study showed that the main metal contents were fluctuating with the increasing of driving miles within certain range. For the practical application, we built a connection between engine abnormal sound faults and the major metal contents in the engine lubricating oil. By comparing the metal contents in problem engine with the established contents changing trends chart, we could get a rapid determination about the engine abnormal sound fault without disintegration of the car. To sum up, the achievements of this study helped to reduce vehicle maintenance costs and improved the fault diagnosis accuracy in abnormal sound of engine crankshaft bearing.

Abstract: The purpose of this paper is to model and study linear differential Hall sensor. A component for linear differential Hall sensor model was constructed, then a number of experiments were performed to check its output characteristics and temperature characteristics.Two Hall-components formed a linear differential Hall model,which had two independent outputs outputing differential voltage. The results show that the model significantly reduces quiescent output voltage, the signal amplitude increased 99.5%, sensitivity ≥ 40mV/mT, linearity error ≤ 0.5%, zero drift coefficient ≤0.023mV/°C.It is concluded that outputing differential voltage can prohibit common-mode interference and zero shift.The model will has self temperature compensation and nonlinear correctiion.In the future ,this model will practicaly in the current sensor.

Abstract: Because the relationship is not considered between physical behavior and cross sections of bars, the conventional reinforced earth retaining wall design based on constant value would lead to some limitations: the haul-resistant coefficient of the top wall is not enough, but it goes beyond at the bottom of retaining wall. In the paper, considering the SARMA method, based on computing formula of traditional slope stability, the detailed programme is realized by the language of FORTRAN, it can make up deficiency that lies in the tradition reinforced earth retaining wall by considering the relationship of physical behavior and cross sections, lengths and layers of bars. Finally, the system program has been applied to a slope treatment project in Guangzhou. Compared with the design method of traditional regulations, it is demonstrated that the optimum length required is obtained, the cross section and length of bars are fully used, and the design is simplified.

Abstract: How to master the technology innovation and method and technique in product exploitation, has been always one of the issues of research and discussion. Based on more than 40 years’ experiences of engagement in mechanical and electrical technology on product research, design, teaching, the author proposed and constructed "OF + N" theoretical method (for short: method of creating inventive and innovative topics) suitable for technological innovation and product development. Some innovative design was implemented using the theoretical method through years of research and probe.

Abstract: The mechanical and physical properties of ultrafine-grained titanium alloys produced by severe plastic deformation are considered. It is found that the formation of ultrafine-grained structure in these materials causes a significant enhancement in their mechanical properties at room temperature and in their resistance to hydrogen embrittlement as well as a change in their acoustic properties. Moreover, superplasticity is realized in these materials at less elevated temperatures relative to the respective coarse grained counterparts. It is shown that the above changes in material properties permit optimization of conditions by the production of items from the titanium alloys, e.g. medical implants having the requisite strength and stepped waveguides having long life even in the high power density conditions of an ultrasound system.