Advanced Materials Research Vols. 889-890

Abstract: This paper presents an abrasive belt grinding robotic system solution for traditional aero-engine blade manual grinding situation. In order to overcome the limitation of traditional polishing robot teaching programming way and improve the efficiency of the robot offline programming and simulation of interactive, based on OpenGL robot programming and motion simulation platform with interactive features is constructed with VC++6.0. The result shows that the system is able to realistically simulate the movement of industrial robots grinding and polishing process, and it provides a reference for the other abrasive belt grinding and polishing robot off-programming and kinematics simulation development technology.

Abstract: Recently in most Chinese CNC machining enterprises, the selection of cutting tools still depends on the experience of individual workers, which is hard to be inherited by others. Faced with this situation, we developed a web application for selecting proper cutting tools in CNC machining workshop, named ct-SELECTOR for short. This article introduces the main functions of the ct-SELECTOR and analyzed the three key enable technologies for realizing each function: (1) the automatic cutting-tool selection and match, (2) the optimal recommendation and management of metal cutting parameters and (3) the management and off-line prediction of tool-life. Finally, the developing architecture of the ct-SELECTOR is demonstrated, and a running example is illustrated to verify the validity and practicability of this system.

Abstract: The space trajectory of joint of the manipulator for appliance performance testing was calculated using the Denavit-Hartenberg algorithm and the kinematic model was established. Combining the Pro/E Prototype 3D modeling and ADAMS mechanical motion analysis, the virtual simulation was set up for the spatial manipulator trajectory, and the simulation result was used to validate the theoretical model calculations. A foundation for further study on the robot trajectory planning and control algorithms is established.

Abstract: In this paper, a hybrid genetic algorithm is presented for the flexible job-shop scheduling problem with makespan criterion. A new machine assignment strategy is proposed to improve the initial population. A modified coding scheme is presented, and a population improvement strategy is performed when the best solution of the population did not improve during some generations. This hybrid algorithm is tested on a series of benchmarks instances. Experimental results show that this hybrid algorithm is efficient and competitive compared to some existing methods.

Abstract: A reasonable scheduling can make tobacco production realize flexibility. That will realize swiftly response to customer's requirements and various batch productions by means of group processing. Ability of flexible production technology will have greatly influences to the tobacco enterprise competitiveness. Under the guidance of flexible tobacco production line control the processing cycle, according to the different characteristics of recipe ingredients and brands to bring about a method of fine tobacco making that can greatly promote the coordination between the tobacco raw materials and processing technology, reduces fluctuations in product quality, maximize the potential of raw materials and improve the quality of product.

Abstract: The present paper attempts to clarify which priority rule is appropriate for specific manufacturing environment variations, such as processing time variations, operation additions, and additional job releases. In such manufacturing environments, the performance of scheduling rules should be evaluated with a degree of robustness under dynamic situations and traditional measures, such as makespan, under static situations. The present paper evaluates the robustness of the priority rules FCFS, SPT, MOPNR, and MWKR from the viewpoint of both dynamic and static situations based on the similarity of schedules before and after variations and based on the rate of makespan deterioration. A new measure of the similarity of schedules is proposed. Guidelines for selecting priority rules, such as avoiding rules that directly use the uncertain information in calculating the priorities, are provided.

Abstract: In this paper, the synthetical evaluation model based on integer programming for arrangement of single round robin schedule is established through analyzing the major factors of matches. Following, as an example, we analysis and evaluate the schedule of NBA 08-09 season according to this mathematical mode. All results are obtained with the MATLAB software.

Abstract: Traditional planning methods ignore the enterprise production capacity,the paper depend on the specific case in enterprise production to build a Production Scheduling System which applies Drum-Buffer-Rope theory. This system proposes the high output, low work in process and on time delivery as the goals, considering the bottleneck resource as well as providing the master production plan with the bottleneck resource, in addition employing the simulation optimization software-Simio to optimize the bottleneck process scheduling and raise the utilization ratio of bottleneck resource.

Abstract: In this paper, we addressed the problems faced by flexible manufacturing system, which make the manufacturing process complex and difficult to scheduling, by the introduction of a Multi-Agent System (MAS) model. The internal structure of each agent was based on the Belief-Desire-Intention (BDI) architecture to represent autonomic and coordinated scheduling mechanism and the ability to acquire information provided by exogenous sources. We built an evaluation system based on products’ preference about time and cost values to explore new assigning weights for the ranking of the candidate designs. In conclusion we provide ways to assemble manufacturing units into MAS while guaranteeing the internal real-time requirements of each agent.

Abstract: In order to better adapt to the change from platform-centric warfare to network-centric warfare, the cooperation and key technologies in command and control are researched. Firstly the concept and connotation on cooperation and cooperative engagement are described. Then, the hierarchy, content and pattern of cooperation in command and control of maritime formation combat under informationization are expounded. Finally the crucial technologies supporting for cooperation in command and control are pointed out. This research provides new ideas and methods for command and control technologies of maritime integrated cooperative engagement.