PC7800仿真软件的汉化

PC7800是法国Bull公司提供的仿真软件。该软件在IBM PC/XT机上运行,可完全仿真VIP 7801终端功能,并且有很强的通讯能力。本文详细介绍了该软件汉化实现的方法及技术要点。     

基于GIS技术的列车运行仿真系统研究

列车运行仿真已成为轨道交通领域研究的热点之一,但国内大量的仿真运行研究侧重于提高目视效果和仿真效率,在仿真系统(尤其是以真实地形、卫星影像等空间数据为场景的仿真系统)数据管理能力上缺乏深入研究和探索。本文将GIS技术应用到列车运行仿真系统的构建中,尝试借助GIS强大的数据组织与管理功能提高运行仿真系统数据管理能力。同时,通过数据分块、外存和层次细节(LOD)模型策略等性能优化策略提高仿真系统中海量场景数据的调度和显示效率。本文基于ArcGIS engine和ArcGISGlobe实现了列车运行仿真试验系统的开发和运行,结果表明,上述思路应用于列车运行仿真系统中可兼顾数据管理能力和高速仿真效率。     

基于MSP430单片机的直流电机PWM调速系统的研究

阐述了MSP430指令集和编译软件的特点，介绍一种基于MSP430单片机实现的直流电机的调速系统。该系统采用MSP430的TimerA模式，产生PWM输出以生成控制信号，能够理想的实现直流电机的PWM控制，并给出部分软硬件设计。     

基于CIP-51单片机的温度采集系统

介绍了C8051F系列CIP-51单片机的特点,并使用C8051F330单片机设计了利用单总线技术的温度信息采集系统.     

基于OpenGL的GNSS仿真软件中的飞行模拟可视化研究

探讨利用OpenGL实现GNSS仿真软件中的飞行模拟可视化方法,给出根据仿真输出的俯仰角、偏航角和速度信息实现的三维可视化结果。     

单片机在臭氧消毒控制系统中的应用

介绍了臭氧消毒机控制系统的设计和实现。着重讨论了如何利用定时器协调各种操作，实现使用者控制意图。     

单片机控制的电子显示屏

本文介绍了由８０３１单片机控制的ＬＥＤ发光二极管阵列构成的电子显示屏显示原理、显示屏数据锁存、驱动接口电路、键盘接口电路、字模存放电路及软件框图。     

排队过程的仿真研究

运用事件调度法,设计了排队系统的仿真方案,并进行了仿真研究。采用M/M/1等待制服务系统为例进行了理论计算,验证了仿真结果的正确性。通过比较M/M/n等待制服务系统在相同服务规则以及不同服务规则下的仿真数据,表明了M/M/n等待制服务系统在不同服务规则下可以得到较好服务效率。对于复杂排队服务系统的设计方案的优化提供了仿真验证的方法。     

基于MATLAB的CDMA通信系统仿真

利用MATLAB平台的SIMULINK可视化仿真功能,完整地实现了CDMA无线通信系统的建模、仿真和分析;介绍了CDMA的主要环节(包括扩频技术、差错控制技术、调制技术、信道等)的参数设置。     

基于单片机的电子密码锁控制电路设计

设计以AT89S51单片机为核心器件,结合按键电路、LED数码管显示电路、存储电路、报警指示电路和开锁机构,利用单片机灵活的编程设计和丰富的I/O端口,及其控制的准确性通过软件程序来控制整个系统实现电子密码锁的基本功能.系统能实现密码的输入、清除、显示,限时输入完整密码,密码正确开锁,超时报警.超位报警,密码错误次数超次锁定键盘,系统设定初始密码和用户修改密码功能.系统功能实用,成本较低,具有一定的实用价值.     

FEM simulation of formation of metamorphic core complex with ANSYS software

This study utilizes ANSYS to establish FEM＇s model of metamorphic core complex, and used thermal-structure analysis to simulate metamorphic core complex＇s temperature field and stress field. The meta- morphic core complex formation mechanism is discussed. The simulation results show that the temperature field change appearing as the earth surface＇ s temperature is the lowest, and the temperature of metamorphic core complex＇ s nucleus is the highest. The temperature field is higher along with depth increase, and the stress field change appearing as the biggest stress occurs in the nucleus. The next stress field occurs at the top of the cover.     

FEM simulation of formation of metamorphic core complex with ANSYS software

This study utilizes ANSYS to establish FEM's model of metamorphic core complex,and used thermal-structure analysis to simulate metamorphic core complex's temperature field and stress field.The metamorphic core complex formation mechanism is discussed.The simulation results show that the temperature field change appearing as the earth surface's temperature is the lowest,and the temperature of metamorphic core complex's nucleus is the highest.The temperature field is higher along with depth increase,and the stress field change appearing as the biggest stress occurs in the nucleus.The next stress field occurs at the top of the cover.     

Study on dynamic numerical simulation of mountain system in tibet plateau

Tibet Plateau in mountain system is becoming one of the focuses of global technique research, because its crust is marvelous thick, which is twice of the normal thickness of mountain system in lithosphere, and its rapid raise from the Quaternary.By using a finite element analysis software ABAQUS,the numeric analysis has been carried out and presented in this paper for the lithosphere stress field.It is the first time to use the displacement loading in the simulation of Tibet Plateau. During the analysis,the deformed elements are used to simulate the structure band, and friction mechanism is used to model the fracture band. The boundary conditions are given according to the boundary displacements around the Plateau. The stress and displacement distributions are obtained for the geological evolution of the plateau, which are consistent with P axial orientations of the seismic origin mechanism and the measures principle stress orientations. The analysis is also given for the dynamic lithosphere evolution of the Mountain System in the Tibet Plateau.     

多媒体《系统仿真》课件的制作和教学实践

结合开发《系统仿真》课件的设计思想、制作方法和课堂教学实践,介绍运用多媒体技术提高授课效率和教学质量的体会。提出针对实际课程内容将传统教学和多媒体教学有机结合,互取所长,以完善课堂教学的方法。     

STUDY ON METHOD OF NUMERICAL SIMULATION OF NONLINEAR RANDOM WAVES

This new method can simulate the nonlinear random wavcs processes by computer if the higherorder moments of the probability distribution of the sea surface elevation reflecting the nonlinearity ofthe sea wave are given. Compared with other methods, this method has greater accuracy andflexibility, wider application and faster simulation. Statistical analysis of the sea surface elevationdistribution of the simulated wave process showed obviously the Gram-Charlier series can be used to depictthe distribution of the sea surface elevation.     

Study of numerical simulation on dual-frequency IP method with FEM

Using the finite element method and Cole-Cole model for dual-frequency IP method to research numerical simulation, the authors introduced the fundamental principle of the dual-frequency IP method and the boundary value problem and variational equations, then replaced the complex resistivity of the model with the Cole-Cole model's parameters under ignoring the EM effect. Through solving the last linear equations, electric potentials of all the model's points were obtained. With changing model's parameters, the authors got different curves of the Fs and phases. According to the results of the simulation, the algorithm is proved to be correct and adaptable.     

SCENARIOS SIMULATION OF COUPLING SYSTEM BETWEEN URBANIZATION AND ECO-ENVIRONMENT IN JIANGSU PROVINCE BASED ON SYSTEM DYNAMICS MODEL

1IN T R O D U C T IO NU rbanizationand eco-environment coupling is uniqueand complex,and itsmechanisms and ruleshave pro-voked much scholarship(B RENNA,1999).More than100yearsago,HOWARD(1898)publishedG ardenC ities of Tom orrow to revealthe interrelationshibpes-tween citygrowth and itseco-environment,and he triedtodealwiththeissuewithrationalplanningway,buthefailed(BOURNE and SIMMONS,1978).However,onlysincethe1920s had thetopicspeciallybeen intensfiied.AftertheChicago schoolhad…     

简易单片机编程器的研制

提出了一种在AT89C5 1仿真板上实现编程器来替代专门的编程器 ,分析了AT89C5 1芯片进行编程的方法 ,并详细阐述了硬件和软件的实现。