查询词典 simulation

The theory of the simulation is that, firstly put fuze and parts in simulation device in reverse, then fire them in high speed by air gun , and they fly into gun spinning quickly and impact cushion and brass block in it , negative acceleration because of impact is to simulate setback , meanwhile they spin with spin gun when impacting, so spin environment can be simulated, so the simulation system can stimulate setback and spin of fuze in fire.

该模拟系统的原理是将引信及其零部件倒置在模拟弹丸中，通过空气炮以高速发射出去，然后飞入高速旋转的旋转管内，与旋转管内的缓冲块和黄铜块碰撞，碰撞而形成的负加速度作为引信发射时受到的后坐，由于碰撞时与旋转管一起旋转，模拟引信发射时的旋转环境，达到模拟引信发射后坐与旋转环境的目的。

In order to establish the complete dynamic simulation model for the heat recovery steam generator and develop an advanced drum level controller, the methods of probability and time series were used to analyze the field data on drum level sloshing noise. The mean value of the drum level was removed and the field data was de-trended to get the true sloshing noise. Meantime, the AR model was set up for the drum level sloshing noise, and simulation results show that the model realizes matching simulation of the drum level noise signals in the power spectrum. The model can also match the drum level noise successfully in the time domain.

为建立完整的余热锅炉系统动态仿真模型，并基于此模型开发先进水位控制器，采用概率统计和时间序列分析的方法，对现场采集的汽包水位晃荡噪声信号进行了分析，去除汽包水位均值和趋势以获得真实的汽包水位晃荡噪声，建立了相应的汽包水位晃荡噪声仿真AR模型；模型的仿真结果表明：AR模型从功率谱上对信号数据进行了匹配模拟，且使用该模型作为噪声模块在时域上对汽包水位晃荡噪声信号进行了成功匹配。

Based on nonliner dynamic simulation model of BLDCM.simulation model of speed and double close loops of current are built in adjusting speed system for BLDCM.Through simulation the performance of BLDCM is researched,in the way PI adjustors of speed and current adopted,fuzzy control used in speed loop and PI adjustor used in current loop,which prepares theory base for controller design of high quality BLDCM.

在直流无刷电机非线性动态仿真模型基础上建立了转速、电流双闭环直流无刷电机调速系统仿真模型，对转速、电流环均采用PI调节器及转速环采用模糊控制器、电流环采用PI调节器的直流无刷电机性能分别进行了仿真研究，为高性能直流无刷电机控制器设计提供了理论依据。

Based on summarizations of system simulation technology and visual simulation technology, this thesis makes a deep research on system design technology and visual environment design technology with the back ground of two avion simulation systems.

本论文在全面综述系统仿真技术、军机仿真技术和视景仿真技术理论的基础上，以两种型号的现代军机仿真系统为背景，对系统顶层设计技术和视景环境设计技术进行了深入的研究，主要研究内容如下

Based on summarizations of system simulation technology and visual simulation technology, this thesis makes a deep research on system design technology and visual environment design technology with the back ground of two avion simulation systems.

因此，军机仿真系统在系统功能、总体设计以及关键技术方面亦发生了较大的变化，以满足飞行作战仿真训练的需要。

Based on summarizations of system simulation technology and visual simulation technology, this thesis makes a deep research on system design technology and visual environment design technology with the back ground of two avion simulation systems. This thesis mainly studies the followings

本论文在全面综述系统仿真技术、军机仿真技术和视景仿真技术理论的基础上，以两种型号的现代军机仿真系统为背景，对系统顶层设计技术和视景环境设计技术进行了深入的研究，主要研究内容如下

With the rapid developments of science and technology, the modern avion simulation system faces two requirements. One is function requirement and the other is technology renovation requirement. As to the first requirement, functions of modern avion are becoming more and more abundant, which causes the flight simulation training change greatly. As to the second requirement, with the development and adoption of new technology, high verisimilitude requirements are raised to avion simulation system.

中文题名现代军机飞行仿真系统的研究副题名外文题名 A study on modern avion flight simulation system 论文作者黄安祥导师李明陈宗基学科专业导航、制导与控制研究领域\研究方向学位级别博士学位授予单位北京航空航天大学学位授予日期2003 论文页码总数150页关键词军用飞机飞行仿真系统仿真馆藏号BSLW /2003 /V271 /3 随着科学技木的飞速发展，现代军机仿真训练系统面临两大需求：一是功能需求，现代军机功能的增强，使飞行仿真训练内容发生了较大变化；二是技术更新需求，新技术的发展及其在仿真系统中的应用，对军机仿真系统的逼真度提出了更高的要求。

The system com- bines numerical simulation with physical simulation to solve the difficult problems of autopilot in closed-loop work on land and dynamic simulation of the course ,rudder angle the track.

介绍一种新颖的自动舵陆上仿真系统的设计方案、功能、特点及软件的设计特点，该系统采用数字模拟与物理模拟相结合的方法，解决了自动舵的陆上闭环工作及航向、舵角、航迹的动态仿真难题。

Based on the results from the Kaiser effect test, disengagement density dislocation test calcspar mineral crystal lattice, and physical simulation results, the numerical simulation models are constructed, and the boundary conditions for simulation analysis is decided.

利用Kaiser效应、方解石矿物晶体的晶格自由密度位错的测试结果，结合物理模拟的结果，建立了研究区数值模拟分析的地质模型，确定了数值分析的边界条件。

Based on platform structural design parameters, simulation research of load coupling among channels for fighting simulation Stewart platform was achieved by using load couping evaluation indexes, and the experimental validation of fighting simulation Stewart platform test prototype was done, which proved the validity and rationality of the load coupling evaluation indexes.

基于平台结构设计参数，运用负载交联耦合评价指标，对飞行模拟Stewart平台通道间负载交联耦合进行了仿真研究，并用飞行模拟Stewart平台试验样机进行了试验验证，证明了负载交联辐合评价指标的有效性和合理性。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。