Advanced Materials Research Vol. 711

Abstract: DGreedy (distributed greedy) algorithm evaluates the priority level in view of remaining energy of terminals, and the relationships between neighbor nodes are not considered. At the same time, the adjustable sensing orientations of sensors are limited. Therefore, the network coverage ratio of DGreedy is affected usually by the processing order of sensor nodes. In this paper, an improved Greedy algorithm for the coverage in directional sensor network is proposed based on the principle of global greedy. The single coverage area of nodes is considered as priority. The direction of node with maximum single coverage area is deployed firstly. Thereby it reduces the sensing overlapping regions and accomplishes coverage enhancement of the networks. Meanwhile, in order to improve the network coverage ratio, the sensing orientations of sensors are adjustable continuously, so the best sensing orientation of node can be selected by considering the deployment of neighbor nodes. Simulation experiments show that the proposed algorithm can improve the coverage area effectively.

Abstract: In recent years, with the double pressure of energy crisis and environmental pollution, the development of new energy vehicles has become China's emerging strategic industry. In order to promote the development of new energy sedans, it is important to study the government subsidy of new energy sedan industry based on the consumer demand. This article firstly elaborates the government support experience of new energy sedan industry in foreign countries. Secondly, we demonstrate the necessity of government policy subsidy. Thirdly, we analyze the economy of new energy sedans based on the consumer demand. Then we make further analysis on the economy of new energy sedans according to the fuel price and the change of technical cost. Finally, we analyze the data, and put forward the government subsidy to promote the development of new energy sedans based on the consumer demand.

Abstract: According to the shortage of the method in real estate investment decision, in order to supplement the deficiency of this one.this paper on the basis of comprehensive consideration of Effects of various factors of real estate project decision, this paper constructs the real estate investment decision-making multi-objective planning evaluation model.Into composite weights,determined by weightthrough the subjective evaluation method combined with the objective evaluation method,and by using the ideal point method (TOPSIS) to evaluate the real estate investment decision-making. This kind of method in view of the present real estate investment decision method is the present situation of the lack of certain to give support and complement, because real estate investment decision is a multi-objective process, so the method is introduced in this paper the method will be more close to the actual situation. Finally, combining with an example, this method is feasible and simple and practical, scientific and reasonable.

Abstract: On-Board Training System (OBTS), which binds the simulator training with real equipment training and use of simulation technology, embedded simulation training into platform of real weapons, using real weapons system for high-fidelity training. OBTS can be used for training purposes to individual, department and whole ship while it is in port, under sail or in active service without disturbing its mission. This paper first introduces the principle of OBTS, and summarizes the status of the development of domestic and international on-board training system. Based on the training scale of system, OBTS is divided into three levels. Related technologies to achieve OBTS are analyzed. Navy's training system is shifted from the shore-based to on-board and from a single system to the level of cooperative training. Thus, the development of OBTS, and by the top-level design, introducing the design of OBTS in warship design phase has a very real sense to Navy.

Abstract: The paper illustrates the design theory and method of micro-computer controlling system for batch asphalt mixing equipment in measurement and gradation. Then combined with the practical application, the paper introduces the solution of factors of affecting the quality of asphalt mixture.

Abstract: The discrete manufacturing plant is the basic of executing enterprises agile manufacture strategy, between enterprise upper management systems and manufacturing process control systems. The constitute structure and the software model of a workshop integrated quality control system is introduced by this paper. The methods and technologies of traditional workshop management cant meet current needs of enterprises. The field management and workshop information integration are given more and more attention by enterprises. In contrary to conventional SPC applications, manufacturing plant based unmanned manufacturing environments require automation of the quality control process. The system is suitable for the production process quality analysis and judgment in the discrete manufacturing plant environment. It can significantly increase the product quality and economic efficiency of enterprises.

Abstract: On the basis of analysis of sonobuoy using situation in the modern anti-warship warfare, wireless sensor networks with multiple sonobuoys are studied for detecting mission. The unknown nodes in the network are positioned by using of DV-Hop algorithm. The research results show that this method is practical and makes the network be self-organized and extensible.

Abstract: In this paper, a compact gripper system is designed to pick up meso-scale parts. A mechanical gripping method is chosen with a new type of joint. Based on the kinematics and material mechanics, the gripper motion is analyzed. Finally, a prototype gripper system based on the design and analysis results is fabricated. The motion principle is checked using laser diodes and position sensing detectors.

Abstract: This paper applies hydraulic transmissions advantages of small volume, light weight, quick response, stable transmission, great transmission torque and agile spatial arrangement etc. to hub electromotor drive electric vehicle, substitutes hub hydraulic motors for hub electromotors, propose a hub hydraulic motor driving system of electric vehicle. The constitution and working principle of system is then described in detail. The hub hydraulic motor driving system proposed in this paper will help electric vehicle to realize continuously variable transmission, leave out reducer and differential mechanism, reduce the unsprung mass of electric vehicle, make the spatial arrangement of electromotors and batteries more flexible, and achieve the integration control of electric vehicles driving, braking and steering.

Abstract: Current study presented a simple, temperature-insensitive fiber Bragg grating (FBG) force sensing system. It is based on an optical intensity modulation scheme with a corrugated long-period fiber grating (CLPFG) filter. The temperature effect of signal variation is about 6%. Through FBG temperature compensating scheme the average temperature sensitivity is improved obviously (0.06 mV/°C).