Advanced Materials Research Vols. 926-930

Abstract: In the field of industrial engineering and information science, optical science increasingly wide range of applications, optical measuring more important in engineering applications. In order to facilitate the integrating sphere optical measurement operation, the use of accessories to simplify the process and reduce the error introduced by using a long luminous uniformity and stability characteristics of the LED, the LED as a light source built-in calibration integrating sphere, the design can be a portable the self-calibration sphere, and the model 380nm~ 900nm spectral band calibration test, the linearity of 99.994%, the diameter of the sphere design 500mm, opening diameter 100mm, the opening ratio is about 6% of the total weight of about 18Kg. Will enable the project after the completion of the optical measurement more convenient.

Abstract: This paper addresses the scheduling problem in interval job shop with flexible preventive maintenance and proposes a two-phase neighborhood search (TPNS) for minimizing interval makespan. A small group of solutions are evolved independently in the first phase and only one solution is used in the second phase. New solutions are produced by using three neighborhood structures and their dynamical transition mechanism. TPNS is tested and compared with some methods from literature. Computational results show that TPNS is an effective approach to solve the considered problem.

Abstract: The torsion beam design for the micromirrors has an important effect on electrostatic behavior. We investigated three torsion beam designs and determined their effect on electrostatic characteristics as well as resonant frequency. The first design is straight torsion beam, which is the simplest and most commonly used. The second and third designs, add different folded structure to improve the performance. The results suggest that the folded-beam design has a significant effect on actuation performance. The most effective design had a driving voltage approximately one half of that for the simplest design, and the effect on resonant frequency is slightly more modest but still impressive.

Abstract: Airborne electronic reconnaissance system is mainly used for the completion of the radar signal interception, sorting and identification process. According to the work process of the airborne electronic reconnaissance system, based on the technical characteristics of High Level Architecture (HLA), design and development of HLA-based airborne electronic reconnaissance simulation system. The simulation system is mainly achieved intercepted radar signals, signal sorting, parameter estimation, threat evaluation functions.

Abstract: Digitization is the inevitable trend of social development, in order to meet the requirements of social development, the apparel industry also called for the speeding up of digitization to improve the technological content of the garment industry. With visualization, virtual reality and other emerging computer technologies emerge and promotion, fashion design in terms of design, style and methods are subject to convey a profound impact. This paper analyzes the virtual reality technology in the field of fashion design developments and sumarize its developing trend in coming dacades.

Abstract: This paper discuss about simulation system of the new globe valve. Through the computer technology, it can simulate the actual working condition to capability of the new globe valve. The system use Autodesk Inventor software as the modeling and analysis Platforms. Virtual assembly for globe valve of the new design is built. Virtual assembly does not produce the real products, consume material and energy, is using model to achieve the process of assembly on the computer. On the basis of no additional cost at the model to virtual assembly, so that products developed with characteristics of fast, flexible, high quality, low consumption, which will produce very good social and economic benefits.

Abstract: The paper uses computational fluid dynamics software FLUENT to build a single-channel numerical simulation model of the mine ventilation gas Thermal Flow-Reversal Reactor (TFRR). Combining with the analysis of orthogonal test, the influences that four factors (Initial temperature distribution, Ventilation gas flow velocity, Volume fraction of methane, Exchange period) act on reactor performance is investigated. An optimal operation condition is proposed by the establishment of the priority sequence of these four factors.

Abstract: The ship-borne antenna uses two-axis stabilized platform to isolate the posture changes of ship and mechanical shock to stabilize the direction of antenna, its working principle is to compensate for the disturbance motion in the opposite direction, which involves a lot of knowledge in the field. This paper proposed using System-on-a-Programmable-Chip (SOPC) to realize algorithmic control and Kalman signal integration of ship-borne two-axis gyro stabilized platform; It not only described the requirements of ship-bone stabilized platform and the advantages of Xilinx FPGA chips designed for motion controllers, but also gave the algorithm principle of the control system, flow chart, the mathematical model and the SOPC system structure diagram; During the design of ship-bone antenna stabilized platform based on SOPC, this paper used MEMS micro mechanical gyroscope to complete test and achieve a certain degree of accuracy, which has greatly reduced the development cost.

Abstract: It is very difficult to use conventional modeling software directly to build a complex excavation engineering model. According to a hillside landscape design example and based on geometric theory, the paper puts forward a method to compute point coordinate of 3D complex model. Then 3D surface of the model is generated and is used to incise the hillside body to get the excavating model. Finally the model is visualized to obtain full 3D effect of the engineering.

Abstract: Spectrum prediction is a technology to estimate the channel status by mining and using the correlation of the spectrum data. Using a reliable prediction scheme, the performance of opportunity spectrum access can be more effective. However, the traditional study on the spectrum prediction methods only use the correlation of the historical data in time domain, and on the basis of the spectrum historical data is complete. In reality, the historical data are often incomplete. The reality calls for a deeper understanding of the correlation of current spectrum data. In this paper, we present a correlation study, with data collected by measure both on the time domain and spectrum domain. Main findings include that the channel status information has correlation not only in the time domain, but also in the spectrum domain. We then exploit such time and spectrum correlation to develop a matrix completion based spectrum prediction scheme under the incomplete data that can predict channel availability based on past observations with considerable accuracy.