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The collisions among a tube, dies and components of a bender often happen in tube bending process and forming quality of the tube will be damaged badly. Simulation technology for tube bending process is proposed to solve the problem. Assembly model and kinematics model for CNC tube bender are set up by analyzing the motion characteristics in tube bending process. Algorithm for collision detection...
This paper presents a novel and practical approach for integrating simulation and optimization of system dynamics (SD) models using Matlab and Simulink. The Matlab platform allows much freedom in customizing and implementing global search techniques such as genetic algorithms (GA) and artificial intelligence constructs like fuzzy logic. The Simulink platform allows complex nonlinear dynamic models...
We developed a generic application framework for integrating a legacy 2D geographic information system (GIS) with 3D visual geographic simulation systems. Our framework provides a set of 3D visual components required for the development of a new interactive 3D visual geographic simulation integrated with GIS functions. Our integration framework provides two fundamental integration mechanisms, i.e...
The periscope training simulation system based on VR technology is discussed. At first, the idiographic designing, the function module and the working principium are studied. Then the workflow, the hardware composition and the software designing are analyzed. And then the realization and the systemic framework are studied as a whole. The key technologies used in the simulator, including 3D model optimization,...
The thyristor Controlled series capacitor (TCSC) is one of the most promising components in flexible AC transmission system (FACTS).It can adjust the power flow and improve the stability of power system . TCSC's different advantages can be classified as steady-state and transient ones. During a fault, TCSC can enhance power quality by limiting the current and help to keep the voltage as high as possible...
With the rapid development of computer simulation technology, the Radar simulation applications scale up increasingly. More and more Radar simulation applications adopt distributed structure to improve system performance and availability. Hence, how to enhance the robustness and efficiency of these complex distributed simulation systems is a hot point. We should balance the load for the applications...
The value added process of mobile commerce value chain is studied. Technical aspect of mobile commerce has matured, however, development of any industry needs a stable and sustainable benefit pattern, thus the research of value chain could find and enforce the mobile value chain increment, besides pushing the industry forward. First, the activities of different stages in the mobile commerce are analyzed...
In this paper, the author establish a model of water-jet propulsion system for self-service gliding-hydrofoil craft. A fuzzy logic controller is designed based on MATLAB and SIMULINK. And simulation experiment is performed. Experiment results show that the fuzzy logic controller is useful and is affected by interference. And the less the interference, the more balanced the effect is.
The necessity for what is called virtual prototyping is said to be emerging for automotive platforms since the end of the 20th century. However the research context is constrained by the tools already used since decades by the car manufacturers. The complexity of the system also is not reducing, because of new devices, new applications and the necessity implied by the use of more electronic components...
The plastic injection process is rather complex, so need to consider many factors in the simulation, then how to optimize the parameters and get the best results for the injection molding, need comprehensive consideration. If consider the deformation of the mold itself in the simulation, still need to use multiple software and appropriate data processing, to make the results of the analysis more realistic...
The use of wireless sensor networks is rapidly growing in various types of applications that benefit from spatially distributed data collection. Some of these applications, such as industrial automation, fire detection or health monitoring, have strong timeliness constraints. Since field deployments are difficult to monitor and debug, the development of real-time communication protocols for wireless...
The ever increasing of software technologies has brought closer technology to users with visual impaired inabilities. This diversification poses a real challenge to ??authors?? (developers and designers) when creating software that has to cope with a myriad of interaction situations, as well as specific directives for ensuring an accessible interaction. Presenting an advanced accessibility simulation...
With respect to a kind of missile with deflectable nose, six-degree-of-freedom dynamics mathematical model including deflectable nose dynamic was established using momentum principle, and guidance system model was presented, at the same time the whole attitude control system with deflectable nose was designed based on variable structure control theory. In order to prove the correctness of the validity...
A cellular automata model (CAM) is presented to simulate the passenger evacuation of carriage in an emergency. Some special algorithm is introduced considering simple human judgment to make the rules more reasonable. Based on the above model, a program CARUN is developed. Considering the special geometry and boundary conditions, the simulation of the evacuation process for the passenger in carriage...
A feature-based parametric modeling software, Autodesk Inventor, is used for the main working subassemblies of 4U-1A Potato Harvester modeling. The movement of swing sieve, a key part of potato harvester, is simulated using the ADAMS. The complex velocity, acceleration and displacement curves as well as collision pressure curves are analyzed to provide theoretical foundation for the work of 4U-1A...
The plasma membrane protects a cell and even though it is only about 10nm thick it is an incredibly complex and crowded environment, with ensembles of channels, membrane and trans-membrane proteins and microdomains. Hence modelling transport and dynamical processes on the plasma membrane is computationally demanding and in order for a simulation to model an entire cell membrane for several real-time...
JAMES II is a general and open framework based on the ldquoPlug'n simulaterdquo concept, which enables developers to integrate their modeling and simulation methodological ideas into, and to create their applications upon an existing framework.This concept together with currently more than 400 plug-ins,and an explicit representation and storage of experiments ease developing modeling and simulation...
Passenger transport terminals (PTT) is the cross point of the various transport modes and the place for the travelers to gather, disperse and transfer, so it is the key part of the city's passenger transport system. Witness2007 as a simulation software is constructed to model bus station in Tianjin Railway Station in this paper. Based on above analysis, the paper gave optimized scheme from the view...
This paper studies the improvement of production efficiency and balance rate of the manual assembly line in a packaging machine manufacturing company. Modular arrangement of predetermined time standards (MODAPTS) method is used to obtain time values for elements and for entire operations of the manual assembly line. Also the ECRS four principles (eliminate, combine, rearrange and simple) are used...
To meet product diversification and individuation, the paper reconstructed the original single object production line using Flexsim simulation software. Reconstructed model was optimized using the ECRS (eliminate, combine, rearrange, simple) analytic method. The study indicate that the mixed-model production line making up three production line can raise the comprehensive utilization ratio of equipment.
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