查询词典 periodic classification

A series of conclusion about omnidirectional image are obtained. 5. Based on the correlation coefficient of periodic vein structure, through error correcting, a method to calibrate the camera is obtained.

以基于周期纹理结构的自相关系数的标准件标定法为基础，通过误差修正，得到了一种新的对照相机进行标定的方法，该方法使用简便，标定结果精度较高，能很好地用于生成完整的全方位全景图象。

This existence of a glimmer of sexual behavior, plus a step to only have into the electrical engineering periodic of error margin but have no accumulation error margin etc.

这一线性关系的存在，加上步进电机只有周期性的误差而无累积误差等特点。

There were many schemes that have been applied to these system to minimize the contouring error, but the effects of these scheme are usually undesire. A repetitive control algorithm was applied here to improve the precision of the system. Experimental results indicated that the periodic error decreased 90% by using the repetitive control method.

另外我们也针对系统的最重要指标—精度—的控制，比较传统伺服控制与往覆式控制理论，在整体系统的要求下整合的可行性并进行相关的实验，而由实验验证往覆式控制理论针对周期性误差信号所具有的特殊补偿现象，并由此得到往覆式控制器的基本特性。

With the nearest interpolation algorithm, the results could be acquired at any location, any time within research areas after eliminating periodic variation and boundary interception error. This method could be applied in the marine environment field.

该方法在高维空间中使用最邻近插值算法，消除了周期性变化以及边界截断误差的影响，实现了对研究区域任意时间，任意地点的插值，在海洋环境领域有着一定的应用前景。

ABSTRACT Based on a summarization of the prevailing techniques for periodic signal measurements, the error sources in digital analyses and the latest progress in the research on reducing spectra leakage, through deep observation and analysis to some real world process phenomena, a novel concept of period domain analysis for process signals is firstly proposed in this dissertation.

基于对周期信号参量测试的发展、数字化分析的误差来源，以及减小频谱泄漏方面国内外的研究现状和发展方向的综述，通过对现实世界中某些过程信号的。。。

There are many ways to calculate GPS satellite azimuth and elevation, but the precision is low. A new method to decide GPS satellite position using the broadcast ephemeris is presented, the way to checkup the precision is also given, and some research are made to analysis the error feature of the position which is calculated by the broadcast ephemeris as well, the results show the error is periodic.

GPS卫星高度角、方位角计算方法众多，但精度低；针对这点，提出了一种利用广播星历计算卫星高度角、方位角的方法，对该方法能够达到的精度提出了鉴定的途径，并分析了利用广播星历计算卫星高度角以及方位角的误差特点，结果表明利用广播星历计算的卫星高度角、方位角呈现出周期性变化的规律。

The central studied content is: the studying for the C and R in the distance measurement, the study for standard deviation of distance measurement of the total station instrument, the study and calculation of illustration for the formula of periodic error of the total station instrument, the checking of horizontal angle.

主要的研究内容有：全站仪测距加乘常数的分析，全站仪测距标准偏差的研究，全站仪周期误差公式的分析及其实例计算，全站仪水平角的检定(多齿分度台法和多目标平行光管法)，一测回水平方向标准偏差计算公式的分析，一测回竖直角标准偏差的合理性分析及其实例计算。

A new method to decide GPS satellite position using the broadcast ephemeris is presented, the way to checkup the precision is also given, and some research are made to analysis the error feature of the position which is calculated hy the broadcast ephemeris as well, the results show the error is periodic.

GPS卫星高度角、方位角计算方法众多，但精度低；针对这点，提出了一种利用广播星历计算卫星高度角、方位角的方法，对该方法能够达到的精度提出了鉴定的途径，并分析了利用广播星历计算卫星高度角以及方位角的误差特点，结果表明利用广播星历计算的卫星高度角、方位角呈现出周期性变化的规律。

In order to reduce the periodic current tracking error of the deadbeat control when compensating abruptly changing nonlinear load current, a repetitive controller is plugged into the deadbeat controller. Also, the repetitive controller can alleviate the parametric dependency of the deadbeat control and eliminate the effects on compensation performance caused by the uncertainties in the system.

另外，为了降低无差拍控制对系统参数的依赖型和系统中存在的不确定性对补偿性能的影响以及减小在补偿电流变化剧烈的非线性负载电流过程中存在的周期性的局部跟踪误差，本文在无差拍控制器的基础上，又提出了基于无差拍和重复控制的复合电流控制器。

The new method is given to design the optimum profile modification curve design The effects of optimum profile gear in improving the dynamic performance of gear transmission are verified in the Gear Dynamic Performance Test Rig In this dissertation, the main study contents and creative results are shown as following: The influences on the gear transmission system caused by the gear's accumulated error (periodic error and harmonic error) are theoretically studied. A new method is developed to simulate the gear's harmonic error by using the 2-order MARKOV process A simulated model of the dynamic performance which is excited by the gear's accumulated error is obtained.

本文在前人大量研究的基础上，结合作者承担的国家自然科学基金项目"齿轮传动动态系统辨识与三维修形研究"和山东省自然科学基金项目"齿轮传动动态性能仿真及结构参数、齿形的优化修形"，采用理论和试验相结合的新思路，系统地研究了齿轮传动的动态性能，建立了能正确描述齿轮传动系统动态性能的仿真模型和系统辨识模型，给出了确定齿轮传动轮齿修形曲线的优化设计方法，利用自行研制的齿轮传动动态性能试验装置，验证了优化修形齿轮对提高齿轮传动动态性能的突出作用。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。