Unified Fixed Point Coordinate Transformation and Its Application to APF Current Control 统一定点坐标变换及其在有源电力滤波器电流控制中的应用
One of the fixed reference lines of a coordinate system. ECEF-Earth Centered Earth Fixed 一个坐标系中的固定的参考线。地固地心直角坐标系
Unified fixed point coordinate transformation ( UFP-CT), and a novel zero steady-state error current control method for active power filter ( APF) based on UFP-CT were proposed. 提出一种统一定点坐标变换和基于该变换的有源电力滤波器零稳态误差电流控制方法。
By testing the fixed targets on earth with known coordinate value in WGS-84 coordinate system, within the range of 30 kilometre, the required location accuracy of less than 1% is achieved. 通过对已知WGS-84坐标系数值的地面固定目标进行测试,在30km的探测距离上,达到了目标定位误差绝对值小于1%的精度要求。
As a common and fixed expression of oral type, oral Chinese idiom belongs to a type of idioms and is coordinate with other types of idioms, but has its own characteristic. 口语习用语作为口语体中的一种常用的固定表达方式,属于熟语的一个类别,与成语、谚语、歇后语等并列,但又有自己的独特之处。
Distribution of the field fixed up at will can be calculated by the application of the charge substitution method accompanied with suitable coordinate transformation. 应用电荷模拟法及适当的座标变换,可以算出任意布置的三维电场分布。
Furthermore, cubic spline interpolation method is employed for the projection from the fixed coordinate to the moving coordinate, which makes the model more exact and simpler. 通过与实验室室内试验结果的比较,模型的可靠性得到了进一步的验证。
In the paper, the accurate total equilibrium equation of one dimensional lattice element in the coordinate has been given by using Green Strain Tensor, then it is changed into one in the fixed three dimensional coordinate, so we can get the accurate tangent stiffness matrix. 利用Green应变张量在随动坐标系中建立一维桁架单元的精确全量平衡方程,然后将其转化成固定空间坐标系中的全量平衡方程,并由此导出精确的切线刚度。
It's not convenient to set up the complicated 3-dimensional model in a fixed coordinate by using AutoCAD. 应用AutoCAD创建复杂的三维模型,只在1个固定的坐标系中创建是非常不便的。
New registration algorithm of sensor in earth-centered earth-fixed ( ECEF) coordinate system 一种新的地心地固坐标系传感器配准算法
This paper describes the six degree maneuvering motion equations of a ship in waves based on the horizontal ship fixed coordinate system. 本文在水平的随船坐标系下,建立了船舶在波浪中的六自由度操纵运动方程。
An analysis model based on the earth centered fixed coordinate frame is introduced, for achieving a quantitative analysis of Doppler shift characteristics over non-GEO satellite channels. The model is irrelative to the geographical coordinate of receiving terminals on the ground after approximative processing. 为了定量分析非静止轨道卫星信道的多普勒频移特性,引入一种基于地心固连坐标系的分析模型,经近似,该模型与地面接收终端的地理坐标无关。
Surveying edge to calculate the front intersection fixed point coordinate method 测边解算前方交会定点坐标法
According to the basic theory of GPS navigation and SINS navigation, the comprehensive mathematic models of integrate navigation system is built under Earth Center Fixed coordinate system. 根据GPS导航和SINS导航的基本关系,在地心地固坐标系下建立了完整的深层全组合导航系统的数学模型。
Detailedly studies the principle of unbalance measure, the relationship between amplitude, phase and unbalance, fixed coordinate component, balance precision and the demands for remaining unbalance. 详细研究了动平衡机不平衡量的测量原理,包括不平衡量与振幅、相位的关系,平面分离的解算标定方法,以及平衡精度,对剩余不平衡量的要求等。
The present paper is intended to solve the problem& how many points in an arbitrary planar moving rigid body can draw circular arc or straight line on a fixed coordinate or another moving body, A theoretical analysis is made and a conclusion is verified. 在作任意平面运动的刚体上,有多少个点能在定坐标(或另一运动刚体)上描绘出圆弧或直线的问题,本文将作出全面分析并用定理形式给出结论和证明。
We discuss a fixed parameter under feedback and coordinate transformation for discrete-time systems. 研究了离散奇异系统下的一个参数不变性,它是由连续时间下降阶观测器理论平移过来的。
The amount of control points is fixed and the formula of coordinate conversion is provided to match the tooth profile. 确定了齿廓曲面拟合的控制点个数和坐标转换公式。
The solute distribution caused by convection can be calculated accurately as long as the velocity field is known. The dispersion problem is solved by finite element method in a fixed coordinate system. 对流问题由可动坐标系中质点的运动决定,弥散问题是在固定坐标系中用有限元素法求解的。
Fixed Transformation Parameter's Adjustment and Coordinate Transformation Model of GPS Net 固定转换参数的GPS网平差与坐标转换模型
This dissertation presents a definition of general offset curve, which has fixed offset distance, but variable offset direction. The offset direction is defined by the local coordinate system, which is formed of the tangent vector and the normal vector of every point on the curve. 本文利用曲线上各点的切向量和法向量所形成的局部坐标系来确定等距方向,从而给出一种广义偏距曲线的新定义。