The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper introduces the application of software Witness, and discusses the cumulative effect of ladle caused by waiting time and the methods of using the software Witness in the simulative interface mode of “route with one open ladle from BF to BOF” in BF -BOF region. The author studies the factors to “bottlenecks” phenomenon in the modeling simulation and the factors to cumulative effect by waiting...
Blue-green algae, widely distributed almost all over the world, is one kind of the most ancient and primitive algae plants. The toxin and smell that blue-green algae releases out endanger human life and health directly, it is of great significance to study the mechanism of algae outbreak. The paper presents a method for the algae simulation based on wireless sensor networks and particle systems theory...
This paper researches characteristics of right-angled flights in rotary dryers. On the basis of the mathematical model, a set of equations has been derived to calculate the solids holdup on right-angled flights in such dryers. The solids holdup and its ratio to the maximum are explored. A kind of practical rotary dryer is simulated by VB program language. The simulated results, obtained in three different...
In order to ensure the security of digital image effectively, an image encryption scheme based on chaotic map is proposed. The original image is depicted by a 3D matrix in this paper. First, the 3D matrix is mapped to a 2D bit matrix by using scan-transformation. Then the 2D matrix is stretched to an array, and the array is mapped back to 3D matrix according to fold algorithm proposed in this paper,...
With the virtual reality and fault diagnosis technology integrated, the visualization fault diagnosis system has been built in the VR environment. The meanings of the visualization are introduced. The system structure and the virtual disassembly approach are analyzed, and their flow charts are given respectively. The expert system is applied in the visualization fault diagnosis, and the backward reasoning...
A force identification technique based on simulation models is proposed and applied to predict the concentrated force at the barycenter of an apparatus. Computation procedure of it is given, in which the model updating and verification steps are included. The mode parameters are used as the base datum for FE model updating. Two verification strategies for the force identification results are introduced,...
This paper researches on oil pressure characteristic in the shift control unit of a heavy vehicle's automatic transmission. The simulation model of its control unit was founded in the ITI-SimulationX software. Through a bench experiment, the correctness and effectiveness of the model has been checked. To solve the early failure problem of the clutch in the road test, optimizing its oil characteristic...
The Social relationships of the pedestrians plays a vital role in crowd simulation, not only in the emergency circumstance but also in normal situation, which has been neglected in many researchers' study. The relationships among the crowds not only affect the modeling of the crowd simulation but also the pedestrian's behavior model. Additionally, social network provides a way of analyzing these pedestrians...
Ant colony optimization(ACO) provides an effective way to solve combinatorial optimization problem. However, with the complexity of the problem increasing, the ACO algorithm needs considerable computational time and resources to improve the good quality of solution, and this rarely satisfies the requirement of real-time computing in M&S (Modeling and Simulation) area. Parallel implementation of...
A new method of simulation model is presented in this paper in order to deal with system based fault mode and effect analysis model in modern complex system with large structure. Directed fault propagation graph model based on fault influence degree is proposed and fault propagation model is put forward. With the definition of direct fault propagation influence degree and indirect fault propagation...
On the basis of SIMetrix/SIMPLIS simulation platform, the computer model of a kind of three-phase multilevel current source inverter (MCSI) was developed by using hierarchy design. In the control system, the multi-carrier PWM modulation strategy was adopted and tested, the current-balance control for intermediate DC-link inductor was implemented on the principle of redundant switching combinations...
A computational modeling and simulation method for rhythmic gymnastics jump based on sport biomechanics was improved. Taking arched jump as example, the entire jump phase was separated into four parts: taking off from bending the knees, airborne, posturing and landing. Then the formulas were developed for modelling. Finally, computational simulation experiment was done with the formulas. The simulation...
The power performance and fuel economy are simulated under the model of THsS II based on ADVISOR software. Compared with the simulation results of Prius, the distinct advantage of THS II belonging to the double planetary gear system can be obviously found out. Test results show that: better power performance and fuel economy can be achieved by THS II than THS, which belongs to the single planetary...
The paper simulate the construction process by programming the dam construction simulation system, and look for the parameters which have important impact on the simulation results such as dam construction schedule and placement intensity through the model parameters sensitivity analysis, then well targeted design the optimized construction program and provide advice and decision support to speed...
Mutil-projector tiled display wall has been widely used in various applications such as simulation, entertainment. Edge blending, which is the core technology for mutil-projector tiled display wall, is improving by and by over ten years. But there are still some problems not resolved. Focus on optimizing edge blending and achieving perfect visual effect, we propose a new edge blending paradigm for...
Quality of the performance and parameters of electronic devices under high-low temperature environments is one of the most important aspects for evaluating its reliability. To the problem that the junction temperature control of electronic devices is not accurate in large batch testing under high-low temperature environments, this paper establishes the junction temperature change equation with time...
A novel method to simulate the FIR filter based on GUI(Graphic User Interface) is introduced in this paper. This method not only depended on Matlab code, but also made use of controls which generate a GUI. All the operations have been done by GUI. This paper took window-function method to realize FIR filter for example to design digital low-pass, high-pass and band-pass filters. The simulation results...
Netlogo is a simulation tool based on Complex Adapt System, now it is used for lots of areas. This thesis uses the modeling thought from bottom to top, and discusses several key techniques based on Netlogo, then points out the real meaning for the army operation simulation, hopes to research a new idea for Muti-Agent modeling of battlefield.
With the informationization of mechanical devices, high precision sensors have been widely applied to all kinds of mechanical devices for the information gathering. However, as the sensors are produced by various research centers and manufacturers, there is a considerable difficulty in examining and identifying the sensors. In this article, A new intelligent analysis model based on BP+GA algorithms...
Accepted models of power and information transmission channel in electromagnetic induction fuze setting systems are not accurate because the effects of eddy currents in the fuze body are not taken into account. This paper establishes an improved accuracy mathematical model that fully considers the influence of eddy currents on the system, and the model is consisted of mutual inductance model of isolated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.