Abstract: In order to investigate the static characteristics of eddy current sensor (ECS) influenced by cylindrical diameter, material and displacement of the target workpiece, some experiments were carried out. Firstly, the theoretical principles of ECS were recalled for explaining the related parameters. The experiment setup was then introduced and some features including linearity, resolution and sensitivity were tested by the experimental instrument and calibrated. Finally, the experimental results were obtained and the influence elements were discussed in the paper.
Abstract: Successive projections algorithm (SPA) combined with least square-support vector machine (LS-SVM) was investigated to determine the citric acid of lemon vinegar by 13 wavelengths within visible/near infrared (Vis/NIR) spectral region. Five concentration levels (100%, 80%, 60%, 40% and 20%) of lemon vinegar were prepared, and the calibration set consisted of 150 samples, validation set consisted of 75 samples and the remaining 75 samples for prediction set. After the comparison of different preprocessing such as smoothing, standard normal variate and derivative, SPA was applied to extract the effective wavelengths to reduce the redundancies and collinearity of variables, and the multiple linear regression (MLR) models were developed compared with partial least squares (PLS) models. Simultaneously, the selected wavelengths were used as the inputs of LS-SVM, and a new proposed combination of SPA-LS-SVM model was developed. The results indicated that SPA-LS-SVM achieved the optimal prediction performance, and the correlation coefficient (r) and root mean square error of prediction (RMSEP) were 0.9894 and 0.0623, respectively. An excellent prediction precision was obtained. The overall results demonstrated that it was feasible to utilize Vis/NIR spectroscopy to predict the citric acid of lemon vinegar, and SPA-LS-SVM model achieved the optimal prediction precision. This study supplied a feasible method for the process monitoring of fruit vinegar manufacture and fermentation.
Abstract: The purpose of this article is to introduce a new perspective into the crisis management team rather than to focus on how to train the crisis management team like many recent researches. This paper adds product-line employees, shareholders, customer representatives, government officials to the crisis management team and use the modified nominal group technique in the decision-making process, which improves the efficiency of the team.
Abstract: This letter establishes the Cellular Automata (CA) Modeling for the Swine lineage influenza A (H1N1) and analyzes its spreading features accordingly, which，actually，turns out that the Preventive-controlling Measure, or the Isolating Policy, in China is not only essential but also feasible. And more important, the CA Modeling presented herewith can also be applied to forecast the percentage of population with the virus infected and will be of significant function for drafting the preventive and controlling policies of the Swine lineage influenza A (H1N1) virus.
Abstract: A method of product innovation design was presented. Based on product gene and interactive genetic algorithm, designs of products evolved into new programs, with which make customers be satisfied. In the evolutionary process, a similar model, which was made by neural network learning, was used to evaluate the fitness of products. This method not only shortened the time which was taken in the process of evolution, but also to avoid the decline in the quality of evaluations which resulted from the mental fatigue of user, and ensured the accuracy of the solution.
Abstract: In order to improve the hydro-forming accuracy, the process parameter’s effect on the technology was studied by using finite element method. The numerical simulation model of the forming process was established. The deformation and thinning were studied. The FLD was used to determine the safe limit of the sheet metal operation. FLD showed that the cylindrical hydro-drawing process could be successfully done in one stroke.
Abstract: In order to solve the problem of 3D intricate product design and mold development, an approach based on UG NX was proposed. The design platform and modular technology of UG MoldWizard were introduced. How to add and edit attributes of the standard part library was explained by using sankyo lifter as example. As an application, a lamp set and its injection mold were rapidly designed by UG MoldWizard. How to patch surfaces, define parting lines and how to extract mold core and mold cavity were illustrated step by step. It proved that UG MoldWizard efficiently promoted work and integrated complex elements of design technology into automated sequences.
Abstract: The paper finished the design of injection molding by UG MoldWizard module, and realized numerical simulation and analysis of injection process by MoldFlow software. Best gate location was obtained. Fill time was deeply studied. Though the mold designing process, it completed the CAD/CAM/CAE integration of the injection molding, and achieved the optimal design of the mold. NC machining of the mold core was programmed by UG NX software. CAD/CAM/CAE greatly improved the development efficient of the mold.
Abstract: The cold expanding diameter process was simulated by the software of DEFORM. The finite element model of tube and dies were built. The object position definition, the inter object setting, movement definition and simulation step were correctly set. The deformation, total velocity distribution and equivalent stress distribution were predicted. The numerical simulation results showed that the finite element analysis could exactly describe the plastic deformation and stress distribution during the forming process.