误差分析

The error sources of this model are analyzed and its measurement accuracy is estimated using Monte Carlo simulation.

通过蒙特卡罗模拟仿真，本文分析了该方法的误差因素并对其精度进行了评估。

The fourth chapter analysesthe differences of the resistance between the boundariescalculated by different models.It can seen from the results thatthe differences between resistances calculated by variousfunctions can ignored under unstable conditions.There areobvious differences between different resistances calculated bydifferent functions under stable conditions.However,in bothcases,error from any function to predict transpiration rate isignoble.In order to make more applicable,the Monteith modelwas fished in this chapter.

第四章分析了各种边界层阻力计算模型计算结果的差异，比较结果表明，在空气层结不稳定时，各种φm函数经验模型计算阻力的差异可忽略，而当空气层结稳定时各种φm函数经验模型所算边界层阻力有明显差异，但不论是稳定和非稳定层结下，任选一中φm函数计算模型对蒸腾速率计算结果所造成的差异可忽略，为便于应用，本章还比较和检验了Monteith模型计算结果的差异，结果表明，该模型用于蒸腾计算，其误差可忽略不计。

The paper analyses the causes of overload of neutral line and great errors of measuring instrument by harmonics electrical line.

对电气回路中因谐波造成的电力线路中性线过载和测量仪表出现较大误差的原因进行了分析，探讨了抑制谐波的措施。

First by testing the practical multilayer insulation in a cryogenic tanker, which is the carilometer in my paper,some affecting factors on multilayer insulation are analysed, then by using the low-temperature and vacuum environment caused by multilayer insulation, the effective thermal conductivity of multiple fiber paper with 5 layers is tested.Through Newton interativemethod,an empirical formula is deduced to computer the thermal conductivity of fiber paper,The errors between experimental thermal conductivity and the calculated conductivity by empirical formula are below10%,so the formula of fiber conductivity can be applied to practical enginnering.

为探索改善工程应用中高真空多层绝热层绝热性能的方法，本文实验研究中首先测量了包扎在实际低温储罐上不同结构的高真空多层绝热层的绝热性能，并分析了环境温度、环境压力，层数、不同隔热材料的组合等因素对工程应用中的高真空多层材料绝热性能的影响；然后利用多层绝热层中的低温真空环境测量5层干法纸在不同温度区间内的表观导热系数，在有限实验数据的基础上用牛顿迭代数值拟和出计算5层干法纸表观导热系数的经验公式，对比经验公式计算值和实验测量值，发现二者的误差在10%以内，因此在工程应用中可用本文的经验公式计算干法纸在低温下的导热系数。

Compared with the conventional 2-D coordinate measuring systems, the new system has great improvement at measuring speed, aiming accuracy, measuring function and degree of automation The new system consists of two parts image measuring system of displacement and image autofocusing and aiming system The displacement measuring system in which CCD camera is used for locating the optical scale not only processes the advantages of absolute code measuring system powerful noiseproof feature, good long-time stability, easily compensated ruling error of optical scale, but also has the advantages of morden numerical systems easy numeralization and intelligence The autofocusing and aiming system in which CCD camera is applied for gaining the defocusing information and edge location information of workpiece enjoys the advantages of fast autofocusing, accurate result, high accuracy of edge detection and wide range of measured parameters, etc The feasibility of the new 2-D measuring system is analyzed in this thesis and related parameters are calculated.

详细本文在分析了现有二维中小尺寸测量系统中，光学仪器的光学读数系统和调焦、瞄准系统的优缺点之后，结合现代数字化仪器的优缺点，提出研制一种新的二维图像测量机系统。与传统二维坐标测量系统相比，新型系统在测量速度、瞄准精度、测量功能及自动化程度等方面都有较大的提高。该系统由图像式位移测量系统和图像式自动调焦、瞄准系统组成。图像式位移测量系统采用CCD摄象机拾取光学线纹尺的位置信息，既具有传统光学式绝对码位移测量系统的优点—抗干扰能力强、长期稳定性好、光学标尺误差易于补偿等优点，又具有现代化数字仪器易于微机化、智能化的优点。

Then, based on the observability of SINS/GPS integrated system it has been concluded that the observability of the attitude errors of the integrated system is very poor, and the nonsingular condition of the obervability matrix has been given by means of the theoretical analysis.

首先建立起捷联惯导系统与全球定位系统相组合系统的数学模型，从研究SINS／GPS组合系统的可观测性出发，通过理论分析得出了组合系统姿态角误差可观测性很差的结论，并给出使可观测阵满秩的条件。

The target of the control system is to maintain constant normal force and tangent speed when following or deburring a workpiece.

最后，进行了边缘跟踪及打毛刺实验，分析了在不同速度及不同正压力下，对力均方误差的影响。

The initial spectrum was pretreated by standard normalized variate, 7 point smoothind and one derivative respectively.

定标集真值与NIRS定标模型预测值之间的决定系数R2和标准差RMSEC分别为0.9529和3.22，相对分析误差RPD为4.798。

The initial spectrum was pretreated by standard normalized variate , 7 point smoothind and one derivative respe ctively.

定标集真值与NIRS定标模型预测值之间的决定系数R2和标准差RMSEC分别为0.952 9和3.22，相对分析误差RPD为4.798。

Unfortunately, due to lack of time, the numerical error and stability analysis which is the key to developing accurate and robust algorithms are only treated superficially in the MIT undergraduate curriculum.

不幸的是，由于时间不足够，数值误差和稳定性分析是开发准确可靠的算法的关键，而它们只是很浅显地在麻省理工学院的本科课程涉及到。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。