Materials Science Forum Vols. 532-533

Abstract: A web based remote monitor & control system for grinding process is presented. In this system, OPC/Socket drive technology, CAN bus technology, B/S structure, Java Applet and ActiveX etc. are used to realize the remote monitor & control, and grinding processes in different place can be monitored and controlled by remote grinding expert only through browser, so it overcomes the shortage that the grinding quality depends on skilled workers and variants with grinding operators. The data processing and feature releasing method of AE signals in grinding process also be discussed. The grinding state feature information can be updated automatically, and be browsed by remote experts through running the ActiveX in the browser. Therefore, it is of important significance for improving workers’ working environment and work-piece quality.

Abstract: Agent technology is widely employed to construct dynamic, distributed collaborative manufacturing systems in which the individual participating agents contribute to execute different part of the whole manufacturing job, and the final goal is achieved through cooperation. However, the cooperation among agents is based on message exchange, and the system requires additional process control and management mechanism to ensure the operation according to a pre-defined process model. This paper defines the collaborative manufacturing job and related information in domain knowledge model, and applies knowledge based expert system to build software agents for process scheduling and management. The system architecture, components and the implementation methods are discussed. A prototype system is constructed on the basis of JADE agent framework and Jess rule engine and demonstrated with an industry product as a case study.

Abstract: Complicated product lifecycle information including design and manufacturing, operation and maintenance as well as relative supply information, all are tightly related to the product life cycle cooperative design and the process of establishing the dynamic alliance. Data grid includes the digital library and data grid service technologies and it can provide the reliable technique support to integrated information systems. The grey clustering is used to merge the same type of factors based on presetting conditions. The improved grey clustering algorithm has been used to find the main failure types for some equipment. The structure of the multi layers and cross information share in the dynamic alliance for the ship life cycle information based on two data grid service centers and the flows of resources and information discovery based on data mining are proposed according to the information share requirements. A developed protocol system based on two data grid services has been presented to show ship lifecycle information share and finding the main failure types of pumps using grey clustering algorithm.

Abstract: How to effectively and efficiently integrate regional networked manufacturing systems is very important, and essential for speeding up agile collaboration between enterprises. The paper presents one kind of integrated framework of regional networked manufacturing systems, including software layer, business and application layer and coordination layer. Meanwhile, some key problems are analyzed. Furthermore, the paper studies a running mode of the systems integration. At last, the primary application situation of the framework in Chongqing of China is introduced, as well as some effects acquired.

Abstract: This paper established the framework of the decision-making model system for autonomous vehicles. Based on virtual reality environment modeling technology, the virtual scene was obtained. The driving performance of autonomous vehicles in real environment was simulated with that of the virtual vehicle in virtual environment. It was studied the influence of driver’s aggressiveness on lane-changed performance through considering human factors, and several longitudinal driving modes were classified and discussed. Three-power B spline function was used in this paper to plan path by interpolating characteristics points. The driving framework and the driving models described in this paper serve to address the problem of building more realistic traffic at the microscopic level in driving simulators. The autonomous vehicles based on this system can be used as the vehicles in simulators and help to design traffic or help to verify the performance of vehicles.

Abstract: Measurement of the grinding wheel topography and its change in machining process is important for revealing the grinding principle of high-temperature brazed mono-layer super-abrasive grinding wheel. A new approach of measuring grinding wheel topography based on binocular stereovision is presented. Firstly, the binocular images are achieved while the optical axes of the two cameras are parallel, and a corner reflection function algorithm is applied to detect corners. Secondly, in order to get matching corners, optimal matching template is obtained by matching curves. The experimental results show that the sequential similarity matching operation with optimal template has advantages of high accuracy, and less error matching. Finally, the height of the corners is obtained by calculating their parallax on left and right image, and the height error is less than 5%.

Abstract: A new model description was proposed which is divided into heavy and light model for reducing the pressure of the network transfer which is constructed by XML files. The model description includes the production assembly tree information, part feature information and geometry information. So it can satisfy the request of browse, query, and annotation with the model. At the same time, model description is compressed by several methods which avoid the designers from the long time waiting.

Abstract: This paper is focused on using the method of computer technology combined with the knowledge of experts to determine heavy-duty cutting processing parameters according to the relevant theories of metal cutting. This “Expert System of the Parameter Optimization in the Heavy-duty Cutting Processing” is based on the VC++6.0 programming language and SQL Sever 2000. It is divided into two subsystems, turning and milling machining. Taking the turning machining subsystem for example, by using methods of generating expression combined with frame representation, this paper classifies and generalizes related knowledge, and combines the knowledge base with the data base to set up the knowledge base of the subsystem. Also this paper introduces the process of inferential mechanism of the optimizing modules of cutters and machining engagements.

Abstract: This paper presents an innovative product design system based on Quality Function Development (QFD) and Theory of Inventive Problem Solving (TRIZ in Russian abbreviation). House of Quality (HOQ) is the core of QFD. To make QFD more practical and operable for small and medium-sized companies, a simplified model of HOQ is proposed. A set of reasoning scheme for inferring requirements relationships is adopted to facilitate constructing the HOQ. The contradiction in the process of mechanical design is defined by TRIZ as physical contradiction and technical contradiction. These two contradictions are solved through contradiction matrix and inventive principles of TRIZ. The innovative design system mainly uses the tool of contradiction matrix to solve the bottle techniques attained from QFD. By taking the HOQ as its interface the integration between QFD and TRIZ is realized. After conducting quality function development, two outputs can be obtained. They are the technical measure needing improvement and the technical measure that is getting worse while improving the former one. These two measures are taken as inputs of TRIZ module to analyze and solve the problem of product design.

Abstract: In this paper COM+ based on Microsoft .NET is adopted to realize a Distributed Collaborative System (DCS). This system adopts a complex architecture combined C/S with B/S to reduce the remote communication and improve the performance. By means of IE or other browsers, a client can download client tool, register or login, search or publish information via the collaborative website. After installing the client tool, a client can automatically receive the collaborative requests or invitations from the collaborative server and collaborate with other participators. The system utilizes COM+ services to realize the Distributed Synchronous Communication (DSC) and Distributed Asynchronous Communication (DAC). Loosely Coupled Event (LCE) service can make DSC true easily and effectively. Transaction service, Queued Component (QC) service and Windows NT Service can be applied to realize DAC efficiently and reliably.