This paper unite surveys works in dong gua shan mines construction under 1 km place researching four key technology in mine s survey , they are construction survey technology in km deep mine , km deep mine s connected survey technology , km deep level survey technology of longer distances link up in many heads opening and basic control survey technology , km mine s extension when the production must go on accurate fixed position survey technology , and all obtained success 本文结合在千米以下冬瓜山铜矿建设时期的测量工作，研究了深部矿山测量四个方面的关键技术，即千米深井施工测量技术、千米深井联系测量技术、千米深井中段多头开拓长距离贯通和基本控制测量技术、千米深井不停产延深精密定位测量技术，并取得了成功的效果。
A nonlinear numerical model for wave transformation is established in time domain based on integral equation transformed from two dimensional laplace equation . then the model is applied to compute the linear wave and nonlinear wave deformation in offshore flow field . a new 0 - 1 combined bem ( boundary element method ) is adopted in this thesis to avoid computational errors accumulated with time steps 本文以波动势函数的laplace方程的green积分转换得到的边界积分方程为基本控制方程，建立了一种新的时域内波浪变形计算的数值模型，籍此对非线性波浪在结构物周围的波浪形态进行了数值模拟，并通过数值造波水槽内的波浪试验对数值模拟结果进行检验。
The main contents of the study as follows : ( 1 ) an introduction to the space vector theory and its application on the modeling of pmsm is presented firstly , which shows the basic idea of pmsm dtc . a comparison of dtc in asynchronous machine and pmsm is made as well . in order to take the full advantage of the dtc , the pmsm has to be properly selected 本文的主要内容包括： ( 1 )由空间矢量模型推导出永磁同步电机的磁链、电压和转矩的公式，描述了永磁同步电机转矩直接控制的基本控制机理，分析了永磁同步电机与感应电机在转矩直接控制方式上的不同之处以及转矩直接控制对永磁同步电机的要求。
Numerical models are frequently used to simulate water flow in hydraulic engineering . shallow water equations are basic governing equations with assumption of the velocity distribution uniformly in vertical , so they have some limitations on the simulation of some plane flows , such as wind - induced flow , curve river flow and flow nearby the submerged dikes . for above - mentioned reasons , extended shallow water equations are developed by introduction of momentum coefficient , correction of convection and bed resistance in equations of motion 在水利工程中经常需要采用数学模型模拟水流的流态，浅水方程是进行平面流态模拟计算的基本控制方程，但因其忽略了流速垂线分布的不均匀性，在模拟某些平面流态(如风生流动、河湾水流、潜坝等工程附近的流动)时存在一定的局限性。
So , in the paper , proceeding from the automatic control of extrusion velocity and based on the basic control strategy presented firstly , the relation among parameters of the process such as pressure , temperature and displacement is investigated , and the model of the process has been built using system identification method . then , a corresponding controller is designed together with its control algorithm , and the control system is proved viable and effective by the results of simulation on the control system . in the end , the problem of the realization of the control system is discussed by using modularization method . the hardware of the control system is designed and a sofeware with a perfect manmachine interface is developed , too 因此，本文从挤压速度的控制出发，首先探讨并确立了本系统的基本控制策略；然后根据此控制策略的必然要求，对该工艺挤压过程所涉及到的挤压力、温度、挤压轴位移等参数间的关系进行了深入研究，利用系统辨识方法建立了挤压过程关键阶段的数学模型；在此基础上完成了相应的控制器设计，给出了控制算法，并对所设计的控制系统进行了仿真。
The properties of the key optical and electrical devices and the controlling mode in the system are put forwards . using the polar coordinate lines with different directions and the circulars with the same axis can be written together . by using he - cd laser ( 442nm ) as writing light source , the system can directly write line with width 05 # m on a sample 本文的主要目的是建立了一种极坐标和直角坐标相结合的激光直写系统的原理样机，探讨系统的各部分器件的基本性能要求，为今后研制高精度激光直写系统做好工作基础，分析了激光直写系统中关键器件的性能要求，基本控制方式，实现了极坐标方式下，任意旋转角度直线图形与共心圆环的光刻。
In this paper , a method for evaluating the order of coriolis force term is suggested by nondimensionalizing the governing equations of tidal current , the scale analyses are made for several typical chinese bays , the errors due to the neglect of geostrophic action in making the physical simulations are calculated , and the practicability of physical model experiment for these sea areas is then discussed 从潮流基本控制方程出发，通过对方程的无因次化，给出评价柯氏力作用大小的方法，并就中国典型的海湾进行尺度分析，量化物理模拟时因地转缺失引起的偏差程度，讨论在这些海域是否可以付诸物理模型试验。
In this paper , the state of the art of upfc is first presented , which include the control methodology and its influence on power system operation . after analyzing the basic principle , the series connection states and parallel connection states are both discussed and then the control methods are designed . furthermore , a program flow chart and its implementation are given based on dsp 分析了统一潮流控制器的工作原理，分别讨论其并联侧和串联侧的工作方式和作用，以此为基础设计了它的基本控制方式和主电路结构，并且完成了以数字信号处理器为基础的控制软件的流程图和具体实现方法。
Then , research on application of cbs to computational fluid dynamics is done . the viscous incompressible fluid laminar flow and heat transfer , the turbulent flow , the laminar flow inside a tube and the laminar flow and heat transfer inside a rotating disc cavity are studied by home - code of cbsftem , cbsturb , cbsaxial and cbsswirl . the program of cbsfst for fluid - thermal - structure interactions is developed , employing the code developed above and a structural analysis code 本文详细分析和阐述了cbs算法的基本理论,基于cbs算法推导了流体力学基本控制方程的有限元离散方程,发展了一组基于cbs算法的cfd有限元计算程序,包括:二维粘性层流流场与温度场计算程序cbsftem 、二维湍流计算程序cbsturb 、轴对称层流计算程序cbsaxial ,轴对称旋转层流计算程序cbsswirl 。
Second , pid arithmetic that is proved to be mature and have excellent performance by practical application is adopted to deal with various problems which hydraulic proportional system could meet with . in practical control , data acquisition & control card made by advantech co . , ltd acts as key element to deal data . this hydraulic - mechanic system integrates the computer technique , hydraulic proportional control and data acquisition technique 在控制算法方面，采用在工业实际应用中已经成熟的、在实际应用中经过验证具有优越性能的pid算法为基本控制算法来处理该液压比例系统所遇到的各种问题(如阀开口为负遮盖引起的死区问题和系统控制的稳定性问题) ；对于实际的控制，采用集数据采集与控制于一体的研华数据采集控制卡作为核心元件，从而在理论上研究并在实际应用中能体现出该液压比例控制系统的基本性能。
