Applied Mechanics and Materials Vols. 556-562

Abstract: The paper introduced computing method of stress wave for structure’s surface in sandy soil medium,discussed matching error between piezoresistance pressure transducer and sandy soil medium.Stress wave of structure’s surface in sandy soil medium be measured by pressure sensor,the experimental data indicate that sandy soil can improve concrete structure’s shock resistance.

Abstract: The intelligent condition monitoring and diagnosis technology has become a hot spot of the research on fault diagnosis. The research, which is on the diagnostic method based on artificial intelligence and its application in fault diagnosis of Turbogenerator, has important social significance and is full of economic value. Introduce the development status of intelligent fault diagnosis technology of turbine. Focus on fault diagnosis technology based on neural network integration with experiment research, analysis and summary. Finally, point out a number of issues and trends of the further study in this area.

Abstract: By using Siemens series S7-300 PLC on the material sorting station sorting control, PLC control and sensor acquisition combination of technology are adopted in the control process. In addition, With the aid of the WinCC software simulation module to the sorting process real-time simulation analysis. The experimental results show that this system has high precision and good stability, and can simulate industrial automation production process effectively.

Abstract: Biomass is an important index to reflect the situation of crop growth. It has a great significance to detect the wheat biomass quickly and nondestructively for wheat breeding and production management. In this paper, a wheat biomass detector prototype is developed based on the biomechanical characteristics of the natural growth wheat stalks, And then the accuracy of this prototype is validated.Through the analysis of data in field tests, the relevance between the resilience force of stem achieved by prototype detector and the ground biomass of wheat is more than 0.86. It means using the prototype detector to forecast the wheat biomass is feasible.

Abstract: Due to the non-smooth movement of the platform, the actual multi-channel SAR system is difficult to satisfy the DPCA condition and it is required to compensate the motion error. Previous studies are only interested in the main lobe clutter suppression performance inside the PRF, while ignoring the sidelobe clutter outside the PRF. This paper theoretically deduces the sidelobe clutter suppression residual by motion error compensation and quantitatively analyzes. Theoretical analysis and simulation results show that: the clutter suppression performance is directly depended on the fractional part of the quotient of motion error than azimuth spatial sampling interval, the results of these studies provides reference for the actual data clutter suppression as well as the SAR system design.

Abstract: The underwater mining vehicle position and azimuth determining system employs the inertial integration to precisely track the mining vehicle, measure and solve numerical values of the mining vehicle’s speed to the true north and its coordinates in real time, and incorporates the odometer to continuously correct the error of the inertial navigation over time, which require the real-time record of the mining vehicle’s position data and graphing them to show. We adopt the VC++ software design to realize the control of the view displaying interface.

Abstract: With the development of the society, security monitoring system more and more get people's attention. Article designs the intelligent video analysis technology based on ARM architecture on the basis of Intelligent Video Surveillance, and discusses the application prospect of intelligent video analysis system.

Abstract: The supercavitation weapon is a new concept weapon moving at a high speed underwater, which is devised applying the characteristic of supercavitation reducing the resistance of water, and it may be widely used in the future. The present ventilating system has many shortcomings, such as less automation and numerous data cannot be measured and recorded timely. In this paper, the automatic monitor and control ventilating system of supercavitation water-tunnel was developed using configuration software and PLC. All parameters can be measured, recorded and displayed automatically via using of the system. It has many advantages such as higher automation, convenience, and easy maintenance.

Abstract: In passive target tracking system, the observer trajectories have an important effect on the accuracy of target localization and tracking. This paper addressed an engineering approach to optimize the trajectory altitude of observer platform for airborne ESM surveillance system. The method proposed is based on Monte-Carlo run, which avoid complicated theoretical deduction and make the observer path easy-to-practice. By the analysis, the general principle of observer trajectory altitude optimization can be obtained. Within the range of allowed flying altitudes for observer, the measurements of elevation should be maintain or close to 45 degrees as much as possible.

Abstract: With regard to the map matching algorithm based on central navigation, the network data are downloaded according to the GPS data in real time. For this reason a network data transport protocol based on grid storage is designed. The paper discusses map matching algorithm on two cases according to having matching point or not. At last, a running experiment for map matching algorithm is given.