Papers by Keyword: Simulation

Abstract: The paper mainly introduces the idea of the design, system composition, and working principle of ‘Marine electrical propulsion simulator’. A fast start experiment is designed to obtain the data and curves from the small-scale simulator. A conclusion is drawn from the experiment that it is dangerous to set the propulsion motor at a high speed during the start period.

Abstract: Modern society is experiencing a variety of crimes, and the damage caused by crime is increasing. So, to prevent crime, to understand the various studies are in progress. However, due to the change of time to predict the incidence of crime research and crime happens there are few studies on the social environment. In this paper, predictive modeling for time changes the crime was investigated. And social changes in the environment a variable predictive modeling to improve accuracy by applying the crime that was investigated. In this paper, the change of social environment, crime, apply predictive modeling to forecast the exact crime is expected to be used.

Abstract: Based on the mathematical model of the brushless DC motor (BLDCM), a self-adaptive fuzzy PID controller is designed to achieve high-precision speed control of motor by adopting fuzzy control principle, simulation is conducted in MATLAB /SIMULINK, the result shows that the controller can work well with quick response, no overshoot output and high control precision, has strong robustness under the circumstances of various disturbances and parameter variations, whose static and dynamic performance with the self-adaptive fuzzy PID control are both better than conventional PID control.

Abstract: This paper mainly focuses on harmonics suppression in power network. Led to by the problem of the fluorescent lamp circuit power factor, the harmonics are recorded by the analysis instrument SR760 about their influence on the circuit current. The method of filtering the harmonics with second-order filter circuit was put forward and then the waveform was simulated after filtration with the simulating software called Pspice, and thereby checks the filtering effects.

Abstract: A new approach is introduced to establish the simulation and training system for X-type missile tail test based on the platform of C8051F020 SCM by adopting virtual closed-loop control technology. This paper expatiates on the event-driven engine technology applied in SCM system, which can help to improve the efficiency of programming, strengthen the reliability of the program and therefore reduce the cost of research and development. It has some value of direction and reference for research and development of similar simulation and training devices.

Abstract: Static var generator (SVG) basic principle and control method are introduced in the article, a direct current control method for SVG is put forward based on d-q transformation, this method is also analyzed from theory and made simulation model, the simulation results show that this control method is reasonable and effective.

Abstract: With the energy consumption, the new route may be reconstructed with energy sufficient nodes. In order to evaluate energy of nodes, an energy consumption model was raised to calculate node energy in wireless sensor networks. The model of nodes was setup in data structure, the energy consumption model was setup in the rule of energy consumption and the wireless radio model of wireless sensor networks was setup in the rule of wireless radio. The simulation algorithm was designed and realized. The result shows that the model can simulate energy consumption for wireless sensor networks which is helpful for route algorithm.

Abstract: More and more people have take more attention on the problem like Seawater intrusion, The same floor recharge and "heat transfixion". This article has established the groundwater flow and solute transport and temperature coupling numerical model,to simulate the underground water temperature’s change by changing the wells’ spacing manner. Simulation results show that the two kinds of disposing Wells solutions are not cause seawater invasion, the second disposing Wells scheme help to prevent the occurrence of seawater invasion.

Abstract: In this paper, double crank mechanism is put forward to achieve separation of the processing tomato fruit-stem on the basis of analysis of the existing separation mechanism kinematic characteristics, and the rod length ratio of the desired motion characteristics has been gotten by virtual simulation platform based on ADAMS, and the rod lengths of the double crank mechanism ultimately determined are as follows, driving crank is 148mm, active crank is 178mm, link is 222mm, and driven crank is 200mm on the basis of the testing determination of the maturity processing tomato fruit-stem separation force. It is able to meet the fruit and stem separation requirements when the angular velocity of driven crank is 60r/min. It can provide a theoretical basis for engineering practice.

Abstract: In order to improve the performance of the electric buses，composite power system is designed，which is analyzed and verified by the simulation using the software of Advisor. Advisor is secondary developed by updating assembly simulation models and vehicle models. The basic structure of composite energy storage system and the control strategy based on fuzzy theory are designed, and the simulation of vehicle performance is done under the road cycle of UDDS, and then compares with the bus with only batteries. The result shows that ultra-capacitor has a prominent "clipped peak and filled channel" protection for the battery, recovers energy commendably, and extends the battery’s life. The electric bus with composite power supply can meet the requirement of vehicle performance, and its indexes of all aspects are better than the electric bus with only batteries.