查询词典 simulation

Finally, the research contents, significance and technological rotes of the dissertation are expanded, with which followed a brief introduction to the dissertations architecture.In chapter 2, the primary theories of process simulation are researched. The basis concept of process structure model and simulation model are given firstly combined with the case.

为此，本文主要内容包括：第一章讨论了本文的研究背景，研究了过程管理产生的背景及进行过程仿真的必要性，分析了过程仿真的特点及当前过程仿真建模技术的现状，提出了全文研究工作的意义、目标及论文的主要研究内容、技术路线。

Using the action-oriented simulation strategy, a simulation software of percussion and rotary drilling has been developed.

根据本文建立的数学模型，采用面向活动的策略编制了一套能模拟冲击回转钻井系统钻井的仿真软件。

Based on the numerical simulation and physical simulation results, the Zr41.25Ti13.75Ni10Cu12.5Be22.55BMG super-plastic forging is carried out, and the asymmetry precision ratchets with full shape and clear profile are obtained.

在数值模拟与物理模拟的基础上，进行了Zr41.25Ti13.75Ni10Cu12.5Be22.5块体非晶合金超塑性模锻成形实验，获得了形状完整、轮廓清晰的块体非晶合金不对称精密棘轮。

The probability distribution model is often used in simulation system to get the needed random number. Firstly how to simulate approximately the common method of probability distribution with Monte-Carlo is presented, and a high quality number randomizer is designed. The frequent stochastic distribution models on simulation system are mainly examined, which have some worth in utility.

计算机仿真系统中经常要应用研究对象的随机分布模型获得符合要求的随机数，给出了利用蒙特卡罗法来近似地描述研究对象的概率分布的一般方法，设计了高质量的随机数发生器，研究了利用MC法得到计算机仿真系统中常见的随机分布模型算法，具有一定的实用价值。

The dynamical and kinematic specialty of hydraulic hammer is analyzed during piling. At the same time, the mathematical model is presented of each process. Based on mathematical model of each stage, simulation and analysis is made. The changing rule of displacement, velocity, acceleration can come to a decision from simulation plot during falling process of pile hammer.

提出桩锤在各个打击过程中的数学模型，并对各阶段进行仿真及分析，研究桩锤下打过程中，桩锤位移、速度、加速度变化规律，为进一步研究生产样机提供了理论依据。

Then, according to HVS, the vibrant valve is designed. On the basis of coupling analysis and simulation study of the vibrant valve and the release valve, the simulation curve about the fluid pressure variation in the pile-driving oil pipe is obtained, by which the relationships among the highest pressure value, average pressure value and the pile-driving frequency are obtained.

然后根据液压振动系统设计了振动开关阀，并重点对液压振动系统中的溢流阀和振动开关阀进行了耦合分析和仿真研究，得出压桩油路中流体压力变化的模拟曲线，并根据模拟曲线分析得出流体压力的最高压力值、平均压力值和压桩频率间的相互关系。

The Bit Error Ratio of the system is analyzed with the method of pilot symbol assisted modulation. Also the simulation result of the BER is provided and shows that the simulation and the analytical result are almost the same.

通过采用导引符号辅助相干解调进行信道估计的方法，给出了二维扩频系统在单音干扰环境中的误比特率分析结果，并对理论分析进行了仿真。

The relations between the simulation circuit parameters and the linear motor parameters were achieved by analyzing the equivalent circuit of the linear motor and the simulation circuit of piston displacement self-sensor.

通过分析直线压缩机的直线电机的等效电路和活塞位移自传感器的模拟电路，得出了模拟电路参数与直线电机参数之间的关系。

Intermediate heat cycle can be reduced because the tail blade turbine steam humidity and reduce steam consumption. improve plant efficiency and thermal cycling in the unit were popular, however, Reheat temperature control system with nonlinear their targets, inertia, the characteristics of delay, Power Plant to become more difficult to control the system-paper fuzzy control theory and fuzzy logic, reconsidered conventional PID control law on the basis of the study and intelligent fuzzy PID control, the 300MW units Reheat fuzzy control process using adaptive PID control, the introduction of load feedforward. design configuration, the final design complex adaptive feedforward cascade control system and MATLAB for simulation, simulation results show that the response speed, Robust control and accuracy, the system has considerable advantages Unit to improve the efficiency and reduce the operational workload.

中间再热循环技术因其可以降低汽轮机尾部叶片的蒸汽湿度和降低汽耗，提高电厂的热循环效率而在单元机组中被普遍采用，然而，再热气温控制系统因其对象具有非线性，大惯性，大迟延等特点，成为火电厂较难控制的系统之－，本文运用模糊控制理论和模糊逻辑推理，在重新认识常规PID控制规律的基础上探讨了PID与智能模糊控制相结合，在电厂300MW发电机组再热模糊控制过程中使用自适应PID控制，引入负荷前馈，设计组态，最终设计出自适应复合型前馈串级控制系统，并在MATLAB中进行仿真模拟，仿真结果表明，在响应速度，鲁棒性和控制精度等方面，此系统都具有相当大的优越性，有利于提高机组的效率和减轻运行人员的劳动负荷。

According to the information of relative orientation from the airplane to airborne anti-submarine buoy, the mathematical model, adopting extended Kalman filtering technique, and simulation algorithm for calculating the buoy position are established in this paper. In respects of the relative position error and RMS error, the simulation results show the error performance of this system.

根据航空搜潜声纳浮标与飞机的相对方位信息，采用扩展卡尔曼滤波技术，分析了计算浮标位置的原理、方法，建立了相应的系统模型和仿真算法，从估计的相对位置误差和均方根误差两个方面，仿真分析了系统的误差性能。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。