Applied Mechanics and Materials Vols. 556-562

Abstract: Reconfigurable manufacturing system is essential for sustainable change, rapid response ability important characteristics, research, development and application of manufacturing system. The main architecture and major characteristics of reconfigurable manufacturing systems is explored. Normally, the quality of RMS can be evaluated by several factors. Firstly, the gross cost of production and reconstruction should be less. Secondly, The time of design and manufacture (ascent time) should be shorter. Thirdly, the utilization ratio of existed resource should reach to the utmost. Finally, the cargo stream planning in common space should keep in optimal condition. At last, The author give an example to shown the RMS, the hydraulic integrated package for a gearshift device in automobile, are mentioned to compare and analyze.

Abstract: The solution of Ethernet interface based on the core of ATmega128 and its architecture of hardware was illustrated in this paper. The operating system of μC/OS-II was transplanted to the system and the improvement of TCP/IP protocol was implemented. The paper dwelled on the module structure of TCP protocol which based on message and function of μC/OS-II. Finally, the test of systemic performance was presented.

Abstract: A novel distributed fountain coding scheme for three-source single-relay networks is proposed. First, the robust Soliton distribution (RSD) is threefoldly deconvolved to get the degree distribution for each source performing encoding. Then the single relay performs re-encoding using certain degree distribution. The asymptotic performance of distributed fountain codes with three sources (DFC-3) is analyzed by the And-Or tree technique. Simulations of the proposed DFC-3 are evaluated and compared with other fountain coding schemes. Simulation results show that the overall degree distribution of DFC-3 is consistent with RSD, and the BER performance agrees with the results of asymptotic analysis. It also reveals that DFC-3 have good performance on lossless channels.

Abstract: Rapid development of Internet networks and backbones technology makes communication based on packet-switching technology, quality and performance have been steadily improved. Existing embedded Internet scenarios, there are high costs, insufficient to achieve complex control functions such as. Embedded devices in the application of limited hardware resources, depending on application requirements simplified TCP/IP protocol. Research of embedded system based on TCP/IP to embedded information product development technology will undoubtedly have an important value.

Abstract: As an important energy production and consumption area, the energy saving and emission reduction performance of thermal power enterprises relates to energy conservation and sustainable development of China’s economy. According to the energy saving policies of power industry, a comprehensive evaluation index system of energy saving and emission reduction performance was built, which contains of energy resource consumption, resource utilization, pollutants emissions and build business efficiency four aspects. The index weights were performed by AHP-entropy weight method considering the expertise and objective information. Meanwhile, an improved Matter-element Extension model was built to evaluate the energy saving and emission reduction performance of thermal power enterprise, in which the domain and standards of maximum degree in traditional model was improved. And an improved correlation function was proposed to instead of traditional correlation function, which is based on both maximum membership degree principle and closeness principles. Finally, the numerical results validate the effectiveness and practicality of the improved model.

Abstract: Edges in a network can be divided into two kinds according to their different roles when removed from the network: some enhance the community structure like the ones connecting two communities while others contribute to weaken the community structure like the ones inside a community. In this paper, we define the edge important to weaken community structure as the relative change in the eigenvalues of the network adjacency matrix upon their removal, which is called EIWCS. Experimental results on real-world network and artificial networks indicate the EIWCS index can well characterize edges important to weaken community structure.

Abstract: Wireless sensor network (WSN) is the network which is composed of a large number of intelligent sensor nodes, it has the ability of self-organizing network routing, therefore, it has been widely used. Building wireless sensor networks is the key to WSN nodes. This paper introduces the basic structure of wireless sensor network node based on ARM, and it delivers a detailed analysis on the operating features and the CC2480 hardware interface of the ZigBee processor, what’s more, it specifically talks about the implementation of the Wince driver of WSN nodes.

Abstract: In order to avoid dropping the SRS report frequently in case of collision between SRS and a periodic CSI report in LTE-Advanced system, this paper gives shortened PUCCH (Physical Uplink Control Channel) format 2/2a/2b for multiplexing SRS (Sounding Reference Signal) with periodic CSI (Channel State Information). The result of simulation shows that the shortened PUCCH format 2/2a/2b can effectively support simultaneous transmission periodic CSI and SRS. What’s more, on shortened PUCCH format 2/2a/2b with the first and last two encoded bits punctured, periodic CSI and HARQ-ACK feedback have the same performance as on PUCCH format 2/2a/2b without multiplexing SRS. Hence through the shortened PUCCH format 2/2a/2b, we can not only enhance simultaneous transmission of periodic CSI and SRS, but also guarantee the similar performance of periodic CSI and HARQ-ACK feedback as transmitting them on PUCCH format 2/2a/2b without multiplexing SRS.

Abstract: High-capacity OLT equipments are widely used in modern communication network. Among the communication equipments, realization of alarm function has an important research significance and wide application prospect. The article simply introduces the demand of alarm of OLT devices and simple network management protocol SNMP and explains the method of realizing alarm information by using SNMP trap. It also introduces the construction of trap message and explains the process and action of network management system after receiving trap information in detail, as a result, realizes the alarm design of high-capacity OLT equipment.

Abstract: To deal with the problem that information shares hardly and data exchanges inefficiently in distribution system, various information systems need multi-source integration. The IEC61968-based information exchange platform is an effective means to resolve the integration problem, realizing seamless data exchange and sharing of data between various subsystems. This paper mainly analyzes the Distribution Management System (DMS) information integration architecture and the message structure. Firstly, the paper proposes a design scheme of power Enterprise Service Bus (ESB) based on Service-Oriented Architecture (SOA) which meeting IEC 61970/61968 standards. Meanwhile, by analyzing the message characteristic of IEC61968 standard, introduce a kind of message format which is suitable for the loosely coupled heterogeneous system with application services and integrating and information sharing. The proposed ESB architecture and message format can meet the need of data processing under different business integration scenes, so as to facilitate the information integration of distribution management system.