Meanwhile, it takes two kinds of representative structures of CMM—movable gantry type CMM and fixed gantry type CMM for example, to demonstrate the features of current error compensation model based on rigid body kinematic assumption and its drawbacks, and analyze distribution feature of non rigid body errors of two kinds of representative CMM in the measuring range, then obtains conclusions which is valuable to accuracy analyses and researches on compensation techniques.
同时，以龙门移动式和龙门固定式两种典型结构的三坐标测量机为例，论证了现有基于刚体运动假设的坐标测量误差补偿模型的特点及其存在的问题；分析了两种典型结构三坐标测量机非刚性效应误差的空间分析特征，得出对三坐标测量机的精度分析和补偿技术研究有重要参考价值的结论。
Coupling simulated the velocity field, the temperature field, the density field and the burning-releasing heat field, and the relation between all sorts of operation parameters and the temperature distribution in boiler has been fully researched. 4. Put forward the two-stage numerical simulation method and obtained the technique taking the results of off-line numerical simulation transplant into on-line dynamic simulation, and realized the dynamic real time display of temperature profile in the boiler by establishing the mathematic model (i. e. the quantify relation) which describes the temperature distribution in the furnace effected by all sorts of operation parameters. The model precision reaches that relative error is less than 12%.
提出了基于风粉在线监测的炉内燃烧工况二重数值仿真方法，通过将炉内温度分布直接与操参数进行关联，解决了将离线数值计算结果向在线动态仿真过程的移植问题，实现了对炉内温度场的实时动态显示，并达到了必要的精度，有效地实现了对炉内燃烧状况的监测与诊断，进而可有效地指导操作参数的调整。
It Introduces the composition of Programmable Logic Controller utilized in material distribution system for the ladle to ladle production of Low Carbon Ferrochrome, the weight error amend, the control method and the application program of this system.
介绍了用于热兑法配料系统的可编程序控制器的组成、料批重量误差补正、控制方法，并介绍系统的应用程序。
The methods accomplished in this project can be widely used in digital model reconstruction of existing objects, innovative design of products with high aesthetics requirements, error inspection for products with complex surfaces, large scale customized manufacturing, GIS, Web-based 3D product distribution etc.
本项成果在已有实物的数字化建模、具有复杂外形或较高审美要求的产品的创新设计、复杂曲面产品的精度检测、大规模个性化定制生产、修复医学、三维地理信息、三维模型的网络化发布等领域具有十分广阔的应用前景。
Based on the normal and dynamic property of instantaneous distribution of machining error and measurement error, this paper analyses the dynamic variation characteristic of error in the process of machining and measurement.
摘 要：基于加工和测量误差瞬时分布的正态性与动态性，分析了加工和测量过程中误差的分布的动态特性。
Results indicate that the variation intensity of control error of inflow cutoff is strong, the effect of inflow cutoff on distribution uniformity is visible than application efficiency.
结果表明，改水成数控制误差具有较强的变异性，改水成数对灌水均匀度的影响大于灌水效率。
It is shown that the concentration distribution and error threshold change little in comparing with deterministic case for small fluctuations, which implies that the error threshold is stable against small perturbation.
结果表明，对于小的适应面涨落，准物种分布和误差阈与确定情形相比变化极小，误差阈对于小的涨落是稳定的。
It is proved that the polarization estimation error obeys the Rayleigh distribution approximately.
引言 在现代电子战条件下，雷达的工作环境日趋复杂恶劣，抗干扰反杂波问题显得愈来愈重要。
In liquid nitrogen environment, n value`s distribution in a relative long Bi2223/Ag tape was measured using this contact-free method. The experimental results were compared with those in the conventional four-probe method which indicated that the result was relable in certain range of error.
在液氮环境下，利用所研制的n值非接触测量装置测量了Bi系长超导带材的n值分布，并与标准四引线测量结果进行比较，实验结果表明非接触测量装置的测量结果在一定误差范围内准确可信。
In the ease of small sample or indefinite error distribution, there is a problem of unlikelihood of statistical referrer.
在小样本或者模型误差分布不明确的情况下，该方法存在统计推断不可信问题。
Compared with the Three-flat testing, only two flats are used in the Pseudo-shear method, one is reference flat, the other is tested flat, three measurements are required to solve for the absolute distribution of the tested flat, and the system error can also be obtainable.
与三面互检法不同，伪剪切法只需要两个平面，一个作为参考平面，一个作为被测平面，通过分别在水平方向、垂直方向移动被测平面，得到三个干涉波面，对三次测量的波差数据处理得到被测平面的绝对面形分布，同时能求出干涉仪的系统误差。
In this dissertation, as for some problems in flood forecast andreservoir regulation, the research had been done based on the special research topic dynamiccontrol on limit water level in flood season using theories of fuzzy optimizing theory, maximum entropy theory, entropy-weighted multi-objective decision making method, geneticalgorithm etc. And the research focused on evaporation calculation, fuzzy description ofcatchraent impoundage, fuzzy similarity calibration method, nolinear watershed concentrationmodel and error distribution maximum entropy model and risk computation of dynamiccontrol reservoir water level in flood season when the flood forecast and precipitation forecastare taken into consideration.
本文从洪水预报和汛限水位动态控制两个研究方向着手，以汛限水位动态控制研究专题的试点水库为工程背景，运用模糊优选理论、极大熵理论、熵权多目标决策法、遗传算法等理论，研究了蒸散发计算和流域蓄水容量的模糊描述、洪水预报模型参数的模糊相似校正方法、流域非线性汇流模型、误差分布的极大熵模型以及考虑洪水预报和降雨预报动态控制水库汛限水位的风险计算方法。
Impoundage; ; fuzzy description; ; fuzzy similarit calibration; ; time-variable instantaneous unit hydrograph; ; error distribution; ; maximum entropy; ;dynamic control on reservoir water level in flood season; ; risk analysis
论文导师周惠成，论文学位博士，论文专业水文学及水资源论文单位大连理工大学，点击次数 1，论文页数 141页File Size8592K
First, we introduce the principle of feeder protective apparatus and select adequate protective equipments in accordance with different types of distribution system, using the least square error method to simulate the time/current curve and applicate simulation formula to digital the curve data, Secondary, using augmented incidence matrix method to find the exact pairs of primary/backup protection relay and find the relay tripping sequence of distribution lines.
首先介绍线路之过电流保护设备动作原理，依不同之配电系统型态来选用适当之保护设备种类，并使用最小平方误差法模拟保护电驿之时间－电流特性曲线，应用模拟方程式将曲线之资料数位化，且藉由图形理论中之增广关联矩阵法求取正确之主保护与后卫保护电驿对，以找出系统中各配电线路保护电驿间之跳脱顺序关系。
The basic principle of the stitching method was introduced, and the reasonable mathematical model and effective splicing algorithm were established based on least squares method and Zernike polynomial fitting. Meanwhile the computer simulation experiment was carried on, the PV and RMS of the full aperture phase distribution residual error are 0.0079λ and 0.0027λ, respectively. The results show that this splicing model and algorithm are accurate and feasible, and it can provide another quantitive measurement for testing aspheric surfaces besides null compensation, especially for large aperture asphere.
介绍了该技术的基本原理，并基于最小二乘法和Zernike多项式拟合建立了合理的数学模型，同时对其进行了计算机模拟实验，拼接前后全孔径相位分布残差的PV值和RMS值分别为0.0079λ和0.0027λ，说明该拼接模型和算法是准确可行的，从而提供了除零位补偿外又一种定量测试非球面尤其是大口径非球面的途径。
The simulation results demonstrate that the proposed algorithm can effectively reduce the location estimation error and variance of the MS, and has favorable performance in both root mean square error and mean error cumulative distribution function.
仿真结果表明，该算法能有效降低移动台位置估计的误差和方差，具有良好的均方根误差和均值误差CDF性能。
It was found that the multi-parameter model describing the relation of vapor enthalpy and temperature (Clapeyron-Clausius equation) is obviously superior to the commonly used two parameters model and the Antoine equation in term of residual square sum and statistic distribution rule of error.
以乙醇为例利用非线性拟合技术和文献报道的实验数据，探讨了纯物质蒸气压和温度关系及其参数的拟合问题。从拟合的残差平方和和误差的统计分布规律考虑，基于蒸发焓与温度关系(Clapeyron-Clausius方程)的多参数模型明显优于常用的二参数模型和Antoine方程
Because quibau thick version 5.1, the back surface friction phase after sticking, la version force focused on the stamp pane at the ends, and the entire block is not fully apply it to the roller, the cnditions stress unevenly, in addition to the break-up of unaccumulate gamta, measurementunder, in the business card printing and membership card design is represented as a rigid body, there is almost no extrusion surface dimensions, it remained stable; and for thin base, together with the pad of paper plates attached to the roller for some examples of the frictional force of isolation, etc, in the role of uponsize in each of the cnditions of a uniform stress distribution, printing better apply it to the surface, it is large, measurementunder overprinter error.
因为厚版基包在滚筒上后，其背后与滚筒暗不天相贴后摩擦力较不小，不推版力只集洋在版口处的两头，分座印版不是分座贴在滚筒上，各质点答力分拨不平均，不兴宏不小的板滞倾圯边，不推伸变形较小，在制卡和会员卡制作历程洋表示为刚体，实在不有有挤压变形，不陈其暗不天尺寸根基保留安定；而差于薄版基，加衬垫纸的印版装在滚筒上后因衬纸的分隔，相答摩擦力变小，在不推力的功用下每个质点的答力漫衍较平均，印版较好不天贴在滚筒暗不天，不陈其不推伸变形较不小，套印差错较不小。
The problem of the error of calculation formula calculating the variance of grouping data within distances in statistics was put forward, and the concrete forms of correcting formula were given by the theorem of addition and the variance of even distribution.
提出统计学中的组距分组资料方差和标准差计算公式误差问题，由方差的加法定理和均匀分布方差给出分组资料方差计算和标准差计算的修正公式具体形式，并就均匀分布数列和正态分布数列组内方差平均数进行了讨论
Correlation interferometer using both vector between the antenna voltage distribution, in large part to avoid the so-called multi-antenna spacing error and the value of constraints, which can use large-size antenna array.
相关干涉仪测向同时使用了天线间的矢量电压的分布，在很大程度上避免了所谓天线间隔误差和多值性的制约，因而可以使用大尺寸天线阵。