Applied Mechanics and Materials Vol. 733

Abstract: Fuze digital model was established based on characteristics of RF devices and target scattering properties calculating. On the basis of this model, a simulation method was proposed to replace simplified model such as antenna pattern. Results show that the simulation can realize simulation of nonlinearity and signal level for fuze system with a good generality, and have high applied value in fuze-warhead system design.

Abstract: PID control and the velocity feedback control for ABS are studied of the wheel slip rate as controlled object. Comparison on these two kinds of control methods is analyzed. It is obtained that velocity feedback control and PID control exist much similarity in some extent, according to the hardware in the loop (HIL) simulation platform. However, the velocity feedback control has more obvious advantages than PID control in terms of the adaptability to different road conditions. It can maintain stable control of system dynamically under the changed road condition, leading to the braking distance shorter.

Abstract: To meet the increasingly stringent environmental protection regulations, there had emerged several technologies in the electrification of powertrains in hybrid vehicle, such as HEV and EV. However, these also led to increasing costs which could greatly affect the markets. So, here introduce a new type of full-hybrid powertrain that combines a petrol engine and a compressed air energy storage unit instead of a battery, offering an alternative to electric hybrid solutions. This paper laid the emphasis on the multi-domain modeling and simulation of a hydro-pneumatic accumulator system, and then continues to study its dynamic behavior of the compressed air and output performance of the pump/motor with simulation. Results show that the system possesses a high applied value in a given hybrid air system.

Abstract: With the application of synchronized phase measurement devices and the rapid development of communications networks, WAMS is gradually becoming the focus of domestic and international science and technology researchers. Based on the OPNET simulation software, this article looks into the communication line of WAMS and conducts a study on WAMS link bandwidth and designs a new method of detecting traffic characteristic. Finally, it proves the conclusion that communication line traffic characteristic can be improved as bandwidth increases. The results will have a higher value for the design of wide area measurement system.

Abstract: Aiming coal mine production conditions, and analyzing the characteristics of underground transmission information, combined with power line carrier technology and industrial field bus technology, designed dual transfer communication module based on power line carrier technology and CAN bus, and on this basis to achieve a bus monitoring network. This paper describes the design of communication module and the composition of the monitoring network, which provide a stable and reliable method for information transmission of underground coal mines.

Abstract: Resource allocation is a key technology of cloud computing. At present, the most of studies on resource allocation mainly focus on improving the overall performance by balancing the load of data center. This paper will design the experimental platform of resource allocation algorithm, energy optimization and performance analysis, obtain original achievements in scientific research ,for the resource allocation method based on immune algorithm and energy optimization in cloud computing to provide innovative ideas and scientific basis. This research has important significance for further study on resource allocation and energy optimization in cloud computing environment.

Abstract: For the shortcomings of the traditional workflow in flexibility, this paper analyzes the advantages of Role Based Access Control Technology (RBAC) in realizing procedure permission dynamic management. With RBAC applied in it, this paper also constructs the flexible workflow model of Role Based Access Control and gives out the definition of the engine as well as the components concerned. In addition, it also solves the problems of the flexible operation of resource and dynamic assigning tasks in the business process, and applies the engine into the specific business process.

Abstract: This paper studied in the process of RFID screen printing, the influence of mesh number, curing temperature and curing time on the RFID tag resistance. During the experiment, there are three specifications, 120 meshes, 250 meshes, 350 meshes , the curing temperature is set as 110 °C, 120 °C, 140 °C, 150 °C, 160 °C and the curing time is 5min, 10min, 15min, 20min, 25min. The experimental results indicate that RFID tags produced by the screen of 120 meshes have rough surface and fail to meet the requirements; when the curing temperature and curing time respectively reaches 150 °C and 20min, the resistance value of the antenna is low and stable.

Abstract: Airborne VOR receiver receive the reference phase signal and variable phase signal which transmitted by VOR ground station. Obtain the aircraft QDR relative to the ground station by compare the phase difference. The indicator indicates the orientation information. For the pilot to determine the location of the plane and guide the aircraft. This paper briefly describes the working principle of the VOR receiver system, and put forward the method of troubleshooting and repair, testing process.

Abstract: In this paper, it introduces the basic concept and key technology of the Internet of things compared to the traditional environment of information technology. It also talks about the application of Internet of things of information collection, transmission and processing technology in environmental monitoring and other environmental supervision, which will promote the development of networking technology application in the environmental regulatory. At the end, some suggestions are put forward from aspects of technology and management.