查询词典 rotating vector

The paper consists of dynamic equivalent of province S network, simulation analysis by simulation software EMTDC, comparison between the simulation result and the graph of fault recorder, applying rotating vector method and resonance theory to analysis fault process, finally having arrived at the fault mechanism of wire-break resonance and asynchronous-ly switching process.

内容包括：对S省电网的动态等值，用仿真软件EMTDC进行仿真分析，将仿真结果和故障录波图做比较，用旋转向量的方法和谐振理论分析事故过程，从而得出了机电相互作用引起变压器中性点击穿和断线谐振导致避雷器爆炸的事故机理。

By analyzing the technology requirement of electric actuators,RFOC（rotor field-oriented control）method was proposed. The fundamental mathematics equations of induction motor in the general synchronously rotating reference frameused for vector control were achieved by coordinate transformation.

中文摘要：分析智能型电动执行机构的技术要求，提出了转子磁场定向的空间矢量控制方案，通过坐标变换得到了适用于矢量控制的同步旋转坐标系统下的感应电机数学模型，推出了转子磁场定向方程。

The devices, such as multi-component measurement table and thrust vector measurement rotating table, are used frequently, but they are suitable only for steady test of the thrust misalignment, especially it cant do very well when some load is very high and other loads were low.

目前，发动机推力偏心测试装置常用多分力测试台架和推力矢量测试转台装置，但通常只适合稳态推力偏心测量，且当各分力的量程相差太大时，难以取得理想的效果。

Using SPWM control with MCU designed subdivision drive mode of current vector even rotating with uniform amplitude, which can realize multi-kinds subdivision series control by setting software data. The current feedback was also adopted to compensate the error and the precise control to hybrid motor was implemented.

设计利用单片机的SPWM控制的电流矢量恒幅均匀旋转的细分驱动模式，并通过软件实现多种细分驱动控制，在此基础上为修正误差引入电流反馈环节，实现了对混合式步进电动机的精确运行控制。

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.

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。

The examples show that harmonic wavelet packets transform more excellent than dyadic wavelet transform, and more excel in noise filter based on Fourier transform in sampling rotating vector analysis about vibrational signal on the basis of harmonic wavelet packet transform is putted forward.

实例表明，谐波小波包变换对强噪声下信号的提取能力优于二进小波变换，更优于基于Fouriar变换的噪声滤波。

The algorithm utilizes the rotating transformation theory of vector, and derives a mathematical expression of trigonometric function which has the interval monotonicity. By comparing the values of mathematical expressions, the sizes of the angles can be judged, this avoids the troublesome calculations of angles, diminishes errors and raises efficiency.The prototype of 3D reconstruction system uses the DXF file as the data source.

文中的算法采用矢量的旋转变换理论，通过计算各分支路径与当前路径之间的三角函数值，利用变换后的三角函数表达式的区间单调性，将角度值的比较转换为三角函数表达式值的比较，从而避免了繁琐的角度值计算，减少了误差，提高了执行效率。

Initiation of DSP, parameter setting, over voltage and over current protection are finished in the major program; current sample, rotating speed calculating, vector conversion and PWM output are finished in the interruption serving program.

系统软件由控制主程序和PWM中断服务子程序组成：主程序完成DSP的初始化、参数设定、过压、过流保护等功能；PWM中断服务子程序完成电流采样，转速计算，矢量变换和PWM输出等功能。

It has developed various UAV, including air propelled UAV, hybrid oil-and-electric propelled UAV, rear-propelling UAV, powered gliding UAV, vector rotating air-ship, remote controlled helicopter, and the various technologies associated with its control, operation, and maintenance.

企业介绍：深圳市领先航空科技有限公司是专业从事无人机开发设计和应用服务的高科技企业，拥有强大的无人飞行器平台研发实力和产业化的服务作业能力。我们在北京设有无人机研发试验基地，在广东设有航空影像获取与处理基地。

The signal is modulated by rotating the torsion balance to ensure the effectiveness of detection for all possible orientations of the vector potential, and the influences of sidereal disturbances of environment are also removed by virtue of this modulation method.

此后，针对2002年的实验中存在的问题，作者重新设计了新的实验方案和高真空调制实验平台，并于2005年完成了改进的扭秤调制实验。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。