Advanced Materials Research Vols. 317-319

Abstract: This paper presents a 3D tool radius compensation for five- axis peripheral milling in CNC systems. Using a generalized kinematics model of five- axis machines and uniform algorithm, it is possible to calculate the complete analytical equations for the tool orientation relative to part. The tool orientation relative to part selecting as Z-axis is used to establish compensation coordinate system. The points in the machine coordinate system are converted to the compensation coordinate system. The compensation points in the compensation coordinate system using these points can be calculated. This computation procedure is similar to the calculation of cutter compensation C. The compensation points in machine coordinate system can be obtained by converting the compensation points in the compensation coordinate system to machine coordinate system. The presented methodology was used in the CNC system, which makes the CNC system more efficiently and systematically

Abstract: Pipes are everywhere; they are used in a variety of pipelines that should be inspected and maintained to ensure their safety and integrity. Currently, the in-pipe robot for such applications is considered as one of the most attractive solutions available. The most important thing, in-pipe robot must concerned adhesion mechanisms. Several adhesion mechanisms have been proposed and developed. We applied magnetic adhesion mechanism. Magnetic adhesion on in-pipe robots has some advantages such as fast locomotion, no additional energy for adhesion process, and one definite disadvantage like difficulty to control magnetic force. To solve this disadvantage, the permanent magnetic wheels that allow controllable magnetic force. This paper proposes a new in-pipe robot that applied controllable magnetic wheel. The idea is conceptualized, simulated, fabrication, and validated experimentally. The pulling force increases linearly form 8 newtons (N) to 26 newtons. It means that the proposed method is effective to control magnetic force between the wheel and interior surfaces of ferromagnetic pipes.

Abstract: In order to realize the intelligent control in simulated riverway control system, the CC-Link bus and Mitsubishi FX2n series programmable controller were used for construct the network of intelligent control system. And the software of this system control was designed to multi-point control all the function of the simulated riverway control system.

Abstract: A dynamic model of decision-making layer is capable of chaotic behavior when the macro order parameter weight changed, even if the model is completely deterministic. To our knowledge, this is firstly discover chaos by qualitative and quantitative analysis on the basis of self-organizing process analysis and synergetics theory. It will make bases for analyzing corresponding states of the system’s inner in the state of the chaos and for further knowing the essence of chaos and chaos control. On the other hand, macro chaos in manufacturing systems is a new challenge to traditional production management.

Abstract: According to the boost mathematical model verified by experiments, the valve train of traditional gasoline engine is optimized and improved to achieve extended expansion cycle. The simulation results of extended expansion gasoline engine shows that the extended expansion gasoline engine has a better economic performance, compared to traditional gasoline engines. The average brake special fuel consumption (BSFC) can reduce 22.78 g / kW•h by LIVC, but the negative impacts of extended expansion gasoline engine restrict the potential of extended expansion gasoline engine. This paper analyzes the extended expansion gasoline engine performance under the influence of LIVC, discusses the way to further improve extended expansion gasoline engine performance.

Abstract: With the advance of the exploration and development technology, the corrosion problem in oil and natural gas industries has attracted more and more attention due to the appearance of H2S, CO2 and other corrosion medium in the oilfields. 20G steel was used as materials of the gas pipeline in P5 gas field. Corrosion failure of the gathering pipeline of No. 03 well was found in 2009. Therefore, the inhibitor CT2-4 was suggested to be used in the field. The anti-corrosion technology was discussed based on weight loss and electrochemical methods. According to the corrosion environment, the inhibition rate of CT2-4 is higher than 85% when its dosage is more than 125mg/L. The corrosion rate is decreased below 0.076 mm/a. The electrochemical results discover CT2-4 is a mixed-type inhibitor. In order to promote the anti-corrosion efficiency, the pre-film was investigated also. It shows the amount of prefilming and prefilming time are 1250 mg/L and 4h.

Abstract: The hemp, anti-bacteria fine rayon and micro-porous polyester fiber were select to spin into the multi-component blending yarn by ring spinning process. The performances of these fibers were analysed, the spinning process were presented. The multi-component blending yarn of Hemp/Anti bacteria fine rayon/micro-porous polyester fiber of excellent was spun successfully, and the performance of yarn was examined and discussed.

Abstract: Abstract. The thesis focuses on how to get the mathematical model of mass transfer under some certain simplified conditions and how to gain the moisture content of materials under drying. In this process, authors utilized phenomenological equations of heat and moisture transfer and analyzed the relationship and cross effects between force and flow, which were about various kinds of heat and mass transfer. In addition, the authors also used computer simulation in drying process. The result of the study is that drying rate depends on the speed of the internal moisture migration. The conclusions of this thesis have great significance for selecting the dryer and in the actual production.

Abstract: On the basis of research on gear transmission theory and the working principle of a gear pump, this paper puts forward the construction principle of a non-meshing force gear pump. The discussions focus on the working principle, construction features, design and finite element analysis of the driving shaft. The research indicates that the new pump has such advantages as lower noise, better distributed flow and a high work pressure. It can be widely used in hydraulic system.

Abstract: This paper analyzes automatic image registration algorithm, and image features of radar and electronic chart, then, image registration algorithm based on Harris feature point are given, in which the methods are specially described. Wavelet transformation method on image feature should be considered. Moreover, simulate results of image fusion.