在分析了传统死区时间补偿方法的缺点之后,提出了适合于通用变频器的基于旋转坐标变换的死区时间补偿方法。
Based on the analysis of traditional compensation methods, a method compensating the dead-time in a synchronous rotating reference frame is proposed, which fits for general-purpose inverters.
如果物体通过几何变换而被放置在世界坐标系中,比如通过平移和旋转,那么视图跟踪他在世界坐标系中位置变换的轨迹可能会是一个艰难的工作。
If the object is positioned in the world through geometric transformations, such as translations and rotations, then keeping track of its position in world coordinates can be a hard task.
本文讨论多元质量数据的矢量分析方法,几何变换,坐标旋转和初始变量的主分量计算不同变量的主分量值。
This paper deals with the multivariate vector analysis of quality data by geometric transformation, rotating coordinates and computation of the principal component of initial variables.
通过将对数极坐标和傅立叶变换结合,完成旋转不变的傅立叶纹理特征提取。
In this paper, we incorporate Fourier transform with Log-Polar transform to achieve rotation invariant texture analysis.
用分步计算和广义球面坐标变换两种方法对椭球体绕对称轴旋转的转动惯量进行了计算,计算表明,后一种方法简单、实用,在工程实际中有应用价值。
The rotary inertia of an ellipsoid rotating around the symmetry axis is calculated by use of the divided calculation and the extensive spherical coordinate transformation.
应用坐标旋转变换原理导出了介质片极化器在任意状态下的S矩阵。
The S - matrix of the polarizer composed of circular waveguide and dielectric plate in arbitrarily states is given with rotation transform.
利用复数坐标系z上的儒可夫斯基变换,计算带电旋转椭球形电容器的静电能,并对结果进行了讨论。
By using the Zhukovsky conversion in the complex coordinate system, the electrostatic energy of a charged revolving ellipsoidal capacitor is calculated and discussed.
通过对坐标系的平移和旋转变换,实现传感器的纠偏,给出了纠偏公式。
At the mean time sensors' correction had realized by coordinates' movement and rotation, and a correcting formula was given as well.
利用坐标平移、旋转变换,导出旋转曲面面积求法的一般公式。
By making use of transformation of coordinate translation, coordinate rotation, we deduced general formula about area of rotational surface.
通过笛卡尔琼斯矢量在坐标旋转下的变换,提出了圆琼斯矢量在坐标旋转下的变换,进而以石英为例推导出旋光率的具体表达式。
The circular Jones vector′s transformation in coordinate conversion was presented by using Cartesian Jones vector′s transformation in coordinate conversion.
确定了物体对称轴的取向后,可使用坐标变换方法,将轴对称物体的对称轴旋转到某一特定的取向,便于使用特征面积分布作为特征参数进行快速的目标分类识。
By rotating the symmetry axis of a target into a defined orientation, it is efficient for target recognition to use the feature area distribution as a parameter.
对3 - d坐标系中定义的对象最基本的操作就是变换、旋转和缩放。
The essential operations performed on objects defined in a 3-d coordinate system are translation, rotation, and scaling.
修复:解决一个问题,造成使用旋转功能产生不必要的坐标系变换营运。
Fix: Resolved an issue that caused the Transform Ops using the rotate function to generate unnecessary coordinate systems.
提出误差推导的一种新方法,利用向量旋转及坐标系变换理论推导出误差公式。
Deducing error equation that used vector rotating and transfer of axes theory, Measuring out measurement parameter error on different orthogonality by testing optical-electrical device.
根据双通道控制旋转导弹的特点,通过旋转变换,将弹体坐标系下的自动驾驶仪回路变换到准弹体坐标系下,并比较了与倾斜稳定导弹标准自动驾驶仪的区别。
Based on the characteristics of rolling missile with double-channel control, the autopilot loop is transferred from body coordinate system to quasi-body coordinate system after a rolling transfer.
造成顺序很重要的一个原因就是,像旋转和缩放这样的变换是针对坐标系的原点进行的。
One reason order is significant is that transformations like rotation and scaling are done with respect to the origin of the coordinate system.
给出旋转曲面生成过程的动画程序,并导出了任一曲线绕任意轴旋转的坐标间几何变换公式。
The animation programs of the making revolution surface is compiled, and a general coordinate formula of geometric transformation is deduced about an arbitrary revolution curve around a rotation axis.
建立了基于FESS的DVR变换的数学模型,设计了同步旋转坐标系下的双矢量控制器。
The state space model of the DVR with the FESS is established, the double vector control algorithm in dq synchronous reference frame is designed.
建立了基于FESS的DVR变换的数学模型,设计了同步旋转坐标系下的双矢量控制器。
The state space model of the DVR with the FESS is established, the double vector control algorithm in dq synchronous reference frame is designed.
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