矢量

Based on the principle that a spatial distributed source can be regarded as superposition of many of point sources in a continuous spatial area, an Electro-Magnetic Vector Sensor model is proposed. Theoretical analysis and the 1 order approximate expression are given. The model's identifiability is also discussed.

本文通过&分布源是在一定空间分布的多个点源信号的叠加&的认识，首次提出了电磁矢量传感器的分布源模型，给出了理论表达式和一阶近似表达式，分析了单个电磁矢量传感器的分布源模型的可辨识性问题。

Then the DTC theory of PMSM and the voltage vector table are analyzed. A new DTC scheme for PMSM is proposed in this paper, which is based on the area voltage vector. And the paper offers the available modulation algorithm between torque and flux.

拓展了一种基于区域电压矢量表的新型控制策略用于永磁同步电机直接转矩控制，并给出了转矩、磁链作用分量协调可控的电压矢量选取调制算法，基于理论分析和MatLab6。

By employing coordinate transformation, the overall generalized displacement vector relevant to the motion of pad and axle journal is converted into axle journal displacement vector in a local motion coordinate system, and the oil film force in a partial motion coordinate system is obtained by solving the dynamic characters of a fixed bush bearing.

通过坐标变换，将瓦块和轴颈运动相关的全局广义位移矢量转换为局部动坐标系下轴颈的位移矢量；利用求解固定瓦轴承动力特性的方法求得的局部动坐标系下的油膜力。

The Doppler frequency shift and the Doppler broadening are comprehensively utilized, the narrow-band phase plate is inserted between a collimating mirror and a focusing lens of an imaging probe, thereby implementing the spatial encoding of the Doppler information, realizing the imaging requirements on the spatial high-resolution three-dimensional speed vector, combining with the Doppler OCT method which is based on the phase resolution technology to meet the high-speed and high-sensitivity measurement requirements and finally realizing the speed vector imaging with high-resolution, high-speed, high-sensitivity and large-imaging range of the three-dimensional flow field of the microfluidic chip.

综合利用多普勒频移和多普勒展宽，并在成像探头的准直镜和聚焦透镜之间插入窄带相位片，实施多普勒信息的空间编码，实现空间高分辨三维速度矢量的成像要求，再结合基于相位分辨技术的多普勒OCT方法则能够满足高速度高灵敏度的测量要求，最终实现对微流控芯片立体流场的高分辨率、高速度、高灵敏度、大成像范围的速度矢量成像。

Basing on the theory on Space-Vector PWM, the paper describes the mapping implemented by Neural-Network from tracked voltage vector to turn-on time of IGBT about rectifying sect of direct-driven synchronous generator excited by permanent magnets convertor system.

本文针对直驱永磁风力发电机变流系统的整流部分，利用空间矢量脉宽调制的原理，利用神经网络来实现跟踪的电压矢量到整流器三相桥臂开关时间的映射。

Chapter 2 covers the AVQ , which has two dynamic codebooks in encoder and decoder, for encoding speech signal.

在第二章，研究了语音信号的自适应矢量量化（或称动态码本的矢量量化）。

A codebook is used for feedbacking power distribution vector, which can effectively reduce the feedback amount of information; the use of two codebooks are used at the same time, which can respectively feedback the power distribution vector and pre-code matrix and can improve the transmission performance of the system under the condition of limited feedback.

使用码本反馈功率分配矢量，可以有效地减少信息的反馈量。同时使用两个码本，分别反馈功率分配矢量和预编码矩阵，可以在有限反馈的条件下提高系统的传输性能。

Theoretical analysis and experimental results suggest that its coding accuracy based on a N-sized codebook is comparable with that of the conventional vector quantization with a N〓-sized codebook, and much better than multi-stage VQ based on two N-sized codebooks, whereas its computational complexity is much lower than the latter ones.

理论分析和实验结果表明：码书大小为N的线上投影法的编码精度与码书大小为N〓的矢量量化法相当，并且明显优于用两个大小为N的码书构成的两级矢量量化法，而其码书生成和编码的计算复杂度远低于后者。

Theoretical analysis and experimental results suggest that its coding accuracy based on a N-sized code-book of size N N2 is comparable with that of VQ coding based on a N2-sized codebook,and much better than multi-stage VQ based on two codebooks of size N,while its computational complexity is much lower than the latter ones under equivalent accuracy obtained.

理论分析和实验结果表明：码书大小为N的线上投影法的编码精度与码书大小为N2的矢量量化法相当，并且明显优于用两个大小为N的码书构成的两级矢量量化法，而其码书生成和编码过程的计算复杂度均远远低于后者。

Both the PID control and the single neutral cell based self-adaptive control algorithm are adopted in the integrated control system. These two control methods are satisfied to minimize the effects on engine's working conditions as the nozzle is deflexed.

针对矢量喷管和发动机综合控制系统，本文采用了PID控制算法和基于单神经元自适应控制，有效的减小矢量喷管偏转对发动机工作状态的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。