Applied Mechanics and Materials Vols. 121-126

Abstract: Based on the experiment, this paper used principal component analysis and multiple regression analysis to establish a fuzzy evaluation system between the paper performance and print qualities. Five kinds of ink-jet paper with different surface characteristics were chosen in this paper to test their properties including absorbability, gloss, roughness, whiteness etc. During the same printing condition, using the digital proofer of EPSON Stylus Pro7880c, the standard wedge of GATF, solid color lumps and standard lines were printed on these paper samples; dot gain and solid densities were tested by SpectroEye, then contrast-K was calculated, the qualities of lines were analyzed with QEA image Analysis. Finally, paper surface characteristics were analyzed with principal components analysis, and definition of printing was analyzed by QEA Image Analysis, correlation between paper basic performance and the characteristics of printing qualities, such as dot gain, solid density, definition and contrast-K, and an integral evaluation function and a model were established. When evaluating on paper, as long as its surface characteristics were tested, the printability of different paper can be evaluated in a fuzzy and integral way through the calculation of the model and evaluation function. This work offers a certain theoretical reference and practical guidance to the selection of ink-jet paper and the improvement of ink-jet qualities.

Abstract: The purpose of this study is the use of linear array CCD laser sensors to measure the vertical displacement. In this paper, the laser vertical displacement measurement principle of line array CCD has been discussed, using the vector method to calculate the spherical optical ray tracing, and linear CCD laser collimator lens and camera lens are designed.

Abstract: To test the motion characteristic of parts between two train cabinets, an integrated testing system based on the Stewart parallel manipulator for train end relationship has been built in the National Engineering Laboratory for System Integration of High-speed Train. It analyzed the kinematics of this system and carried out series of experimental test. The results of static positioning test and dynamic tracking test show that the testing system has a good characteristic of motion simulation. This is the first time that the Stewart parallel manipulator is applied in high-speed train field.

Abstract: Researches on the method of the performance evaluation of government investment in public project are mainly embodied in indicator system. However, these models do not attach importance to the applicability. So, it causes lack of suitable evaluation model for evaluating the projects of government investment in public project in Low-Carbon Economy. Therefore, this article in accordance with the characteristics of this investment in public projects, combined the gray relational analysis method, fuzzy comprehensive evaluation method and stepwise discriminate analysis method with their respective advantages to develop a new algorithm——GFS algorithm. Using the GFS algorithm can do discriminate analysis for a new investment project. Practice shows that the GFS algorithm has a good effect. It can provide the theoretical basis for decision-making of senior government managers.

Abstract: This paper analyzes the shortcomings of the present applications of the space information confrontation simulation technology in the light of the development trend of the technology and points out establishing simulation platforms based on the HLA and Agent technologies is an effective method to carry out the demonstration and effect evaluation of space information confrontation systems. this paper also proposes an information confrontation Agent modeling framework and an architecture of space information confrontation simulation systems and describes several key technologies needing to be noted in the simulation based on the Agent and HLA technologies.

Abstract: For the design and development of fully functional emergency management decision support systems for coal mining enterprises, the paper studies enterprise simulation frameworks of the mine emergency management system. Firstly, the function framework of HLA-based virtual simulation in coal mining enterprise is presented. By integrating HLA / RTI, etc, we integrate immersive interactive man-machine interface device as constructed structure of the virtual policy framework. And then, a coal mining enterprise virtual simulation process model is built. Finally, the virtual simulation architecture for the emergency management of coal mining enterprise is designed.

Abstract: In this paper, the mechanical structure of a novel two-phase hybrid stepping motor, which offers big transmission ratio and fast response characteristics, is proposed. Comparing with typical two-phase hybrid stepping motor, permanent magnet of the new model is placed on the stator, thus it has better utilization of space than conventional two-phase hybrid stepping motor. Furthermore, new two-phase hybrid stepping motor torque mathematical model is established. And the two-phase hybrid stepping motor torque vector analysis method we provide here provide you with an intuitive way of research on the new type two-phase hybrid stepping motor operation principle and control mode.

Abstract: Wear debris recongition system is researched,which is based on adaptive resonance theory of artifical neural network(ART) and gray level co-occurrence matrix.The ditailed process is as follows:the first,according to gray level co-occurrence matrix theory,wear image refining feature parameter algorithm is researched; the second,in order to solve the wear debris classification,which is built on the wear image refining feature parameter algorithm, wear debris classification ART algorithm is researched;at last,a series of experiments,which is based on the algorithm,are processed.The theroy derivation and experiment results prove that the wear debris recongition system is feasible in recognition accuracy and algorithm convergence speed.

Abstract: In clinic it is of very practical significance to optimize the entry point and pose in path planning. We proposed a reverse path planning algorithm adopting multiform combined paths based on the improved kinematic model of flexible needle, and the objective function is established. Utilizing the reversibility of the path, we started from the target to optimize the whole path including the entry point and pose. Then we optimally calculated and simulated in the environment with obstacles. Results show that this algorithm effectively makes the needle steer clear of obstacles to reach the target precisely, and gains the entry point and pose at the same time, guaranteeing the optimal path.

Abstract: The overall effect of sealing the packaging has a very important role. Sealed plastic containers divided into four main ways, namely the bundle sealing, adhesive sealing, physical sealing and filling and sealing. They have their own characteristics. Bundling seal means the product can not be sealed, but its use is very wide, has a high degree of freedom. Low adhesive strength of adhesive sealing, but it is widely used. More complex structure of the physical sealing, but it has a wide variety of functions. Used in the filling and sealing gaskets are susceptible to damage, but it has a good seal. This paper analyzes the principles of their seal，which allows you to choose different sealing materials and the corresponding sealing structure to meet a variety of packaging needs.