光纤通信系统的计算机仿真

为了高效地完成日趋复杂通信系统的仿真研究,在对光纤通信系统分析的基础上,利用optisystem仿真软件,建立了高速大容量光纤系统的仿真模型,得到了高速光纤通信系统特性、激光器的调制频率、偏置电流的关系,以及光纤的损耗和色散的仿真结果。亦可利用此仿真软件非常灵活地设计满足需要的仿真系统。     

三维海面计算机仿真

为海洋微波遥感器提供预研阶段的海面仿真数据,本文首先从经验的涌浪谱和风浪谱出发,利用傅立叶变换仿真了三维海面。结果表明,用这种方法可以模拟真实的海面。     

计算机控制系统的抗干扰技术

计算机控制系统中存在各种不同的干扰源，为此，必须采取各种软件和硬件上的抗干扰措施来保证计算机控制系统能长期、可靠、安全、稳定地运行。     

Development of Computer Simulation System for the Winding of Toroidal Pressure Vessels

1 Introduction Filament winding is a widely-used manufacturing process in composites industry. Continuous filaments can be oriented to match the requirements of the direction and magnitude of stresses in a laminated structure, allowing reinforcement loading. More recently, filament wound toroidal pressure vessels have emerged as an attractive alternative in aerospace, nuclear, medical appliance and underwater fields where space-saving, weight reduction and non-drift of center of mass are requi…     

飞行光学头飞行性能计算机仿真

研究与设计飞行光学头是推出新一代高密度近场光记录光盘驱动器的关键技术之一 .为了灵活方便地对各种结构形式的光学头进行飞行性能分析 ,本文在对飞行光学头进行建模与分析的基础上 ,在 Matlab环境下开发出了飞行光学头飞行性能分析软件 ,给出了飞行光学头的仿真建模及性能分析软件系统的设计思路和总体规划 .     

Topology optimization of the primary mirror of a multi-spectral camera

A study of the topology optimization of a multi-spectral camera for space-use is presented. The optimization is carried out under self-weight and polishing pressure loading. As an objective function, a measure of Strehl ratio is used. Total mass of the primary mirror is given as a constraint to the optimization problem. The sensitivities of the objective function and constraint are calculated by direct differentiation method. The optimization procedure is carried out by an optimality criteria method. For the light-weight primary mirror design, a three dimensional model is treated. As a preliminary example, topology optimization considering a self-weight loading is treated. In the second example, the polishing pressure is also included as a loading in the topology optimization of the mirror. Results of the optimized design topology for the mirror with various mass constraints are presented. Received September 3, 2001 RID="*" ID="*"A shorter version of this paper was presented at ISSMO’s Fourth World Congress in 2001, in Dalian, China. Dr Park was awarded for it the ISSMO/Springer prize for young scientists-2001     

信鸽体表参数测定与计算机模拟

以OLYCIAp3图像分析系统为主要测量手段,分析和测量信鸽体表单元体参数值及其分布密度、分布距离等参数,建立了信鸽表面单元体的搭接的数学模型,并以此为依据,编程模拟了信鸽体表部位主要。     

计算机管理系统仿真

本文从四个方面系统的阐述了在现代工业系统或工程系统中计算机管理仿真的思想与方法。并给出了实现计算机管理系统仿真的步骤与实例说明。     

蝶形天线的计算机仿真设计

蝶形天线是在脉冲型探地雷达中广泛采用的一种宽带天线。本文采用时域有限差分算法(FDTD)结合PML吸收边界条件分析了蝶形天线在高斯脉冲激励下的时域特性,通过傅立叶变换,计算出天线的方向图和在不同频率下的输入阻抗,结果表明FDTD算法用于分析蝶形天线是有效的。     

计算机仿真系统述评

国内外现有计算机仿真系统,琳琅满目,而且普遍存在着"建立仿真应用研究的时间太长、费用太高"的问题。原因就在于缺乏正确的技术理论指导,或盲目追求大而全,或低水平地重复。显然,在需求牵引、技术推动、经济支撑下,紧跟时代前进步伐,要用信息化理念和方法建立计算机仿真系统。高新技术与先进管理相结合才可能有高质量仿真系统的诞生。为了今后建立又好又快又省的计算机仿真系统,把现有计算机仿真系统归纳一下,以便从中吸取教训,改进工作。