构造速度

提出一种新的直流电机鲁棒速度控制方法，该方法通过构造速度误差的Lyapunov函数，导出了可变反馈增益。

The new method of robust controller is presented for rotational speed of DC motor , and the method is constructed with the Lyapunov function of speed error , the variety feedback gain is edcued .

根据概率统计假设检验原理，建立两个统计假设检验，分别称为R检验和V检验，再利用这两个假设检验所得的两个统计量的概率，构造速度谱的度量函数。

Building two statistical hypothetical tests according to hypothetical test principle in probabilistic method that are called R test and V test separately and using these probability of two statistical figures resulted from above hypothetical tests , the measuring function of velocity spectrum can be constructed .

在复杂构造速度分析时，采用控制照明技术可校正平面波因复杂构造而引起的波前畸变，从而减小速度分析的误差。

Controlled illumination source is used for reducing the error resulting from aberration of plane wave transmitting complex geology structure .

本文的渐进式算法利用一种树状结构来对概念格节点进行索引，从而有效地提高了概念格的构造速度。

The incremental algorithm use a tree structure to organize the set of concept nodes , and decrease the time needed to build concept lattice .

本文利用神经网络可以逼近任意曲线的特点，借鉴三相异步电机速度辨识的方法，用神经网络构造速度辨识的可调模型。

We design the adjustable model with neural network by utilizing the neural network can approximate arbitrary and referencing the speed identification method of three-phase asynchronous motor .

决策树由于具有无参性、构造速度快、高度可解释性等优点而成为数据挖掘领域广泛使用的模型。

Decision tree has many advantages : non-parametric , fast construction , and highly explanatory , these advantages have become widely used model in the data mining areas .

该技术使得四分树的构造速度相对于传统的四分树构造方法大大提高。该方法可运用到许多基于规则划分的空间数据结构上，来加快它们的构造。

These techniques can bring significant speedup comparing to traditional quadtree building methods and can be used in many spatial data structures based on regular partition to speed up their constructions .

有效的体系结构、分析设计方法以及软件实现技术，可以降低企业电子商务应用系统设计的复杂度和加快构造速度，并且能够实现有效的电子商务。

With efficient software architecture , analyst and design technique and implementation technology of EB application , the complexity of the EB system designing can be reduced , and EB can be implemented really and effectively .

从速度和压力分离的经改写的弱形式出发，进而构造了速度和压力11摘要分离的单区域和多区域Chebyshev一Legendre谱方法格式。

Then we construct the Chebyshev-Legendre spectral schemes at single domain and multi-domains from the modified weak forms .

根据GPS观测资料确定边界条件，并考虑构造变形速度随深度变化的三种典型模式，通过模拟运算分别给出了这一区域的构造应力场的数值模拟结果。

According to Global Position System observations , considering three representative patterns of tectonic deformation velocity changing with depth , we loaded three different boundary conditions and got each numerical simulation result of the tectonic stress field in this region .

本文提出了一种按速度构造对速度场进行分区的裂步傅里叶叠前深度偏移方法。

The paper presented split-step Fourier presta - ck depth migration method using velocity structure to partition the velocity field .

长江三峡地区第四纪以来新构造上升速度和形式第二代小波的上升型构造及其在图像融合中的应用

NEOTECTONIC UPLIFT VELOCITY AND TYPE ALONG THE CHANGJIANG RIVER DURING QUATERNARY The Construction of Second Generation Wavelet and its Application In Image Fusion

现代地壳应力值高、构造变形速度快、地震活动强度加剧、地热流异常明显。

And the present crust has high stress values , rapid structural deformation rate , increaing earthquake intensity and obvious geothermal flow anomaly , etc.

波动方程叠前深度偏移技术是解决复杂构造和速度横向变化剧烈地区的地震资料成像问题的理想技术，可为复杂地区的高精度构造解释和地质解释提供可靠保证。

Wave equation prestack depth migration is an ideal seismic data imaging technique for the area where there occur very complicated geologic structure and severe lateral velocity variation .

文中使用的各向异性介质的速度模型与现行的各向异性构造的速度估计方法一致，将各向同性、弱各向异性及强各向异性统一在一个模型中。

The macro velocity model used for describing anisotropic media is consistent with the current velocity estimation method and can simultaneously accommodate the isotropy , weak anisotropy and strong anisotropy .

浅部速度结构的总体特征显示：华北不同构造单元速度结构具有区域相似性，但彼此相差很大。

The general characteristics of shallow velocity structures show that , there exists regional similarity for different tectonic units in North China , but present great differences from each other .

在复杂构造及速度变化较大的地质条件下，地表接收到的地震记录变得异常复杂，使地震资料的处理与解释非常困难。

Under the complex structures and greatly speed changes geological condition , seismic records received on the surface have become very complex , so that seismic data processing and interpretation become very difficult .

但上述方法不同程度地受到地下地质构造和速度场复杂性的约束。如地层倾角的大小、上覆构造的复杂性、偏移距的大小、和速度场的横向变化等。

But these methods mentioned above were restricted by underground geological structure and the complication of velocity field , such as reflector dip , the complexity of overburden layer , offset and lateral variation of velocity field .

根据公式，我们提出了一个新的、更方便的测量和构造相速度分布的方法。其次，我们研究了真空激光加速的另一个关键问题：被加速电子的能量角度关联。

It offers a new and relatively simple method to measure and control the phase velocity distribution . Then , we proceed to investigate another crucial subject of vacuum laser acceleration & the correlation between the outgoing energy and scattering angle of accelerated electrons .

本文根据对海城地震区三条深地震测深剖面资料的综合解释，获得了该震区似三维空间内的地壳与上地幔分层构造与速度分布特征。

In this paper , The Characteristics of quasi - 3D layered structure and the velocity distribution of the crust and the upper mantle have been obtained in Haicheng Seismic area according to the synthetic interpretation of DSS data from three profiles in the area .

利用该计算方案对航空重力测量的GPS速度数据以及构造的模拟速度数据进行处理得到平滑后的加速度值。

The GPS velocity data and simulation velocity data of airborne vector gravimetry is processed to yield the smoothed acceleration by using the computing method above .

本文根据用磁通观测器来估算磁通，以及用改进的MRAS（模型参考自适应法）来推算转速，构造了无速度传感器的异步电动机矢量控制系统结构，建立了控制系统的数学模型。

This paper uses flux monitoring to evaluate the flux and improved MRAS ( model referring self-adapted method ) to estimate rotate speed , builds asynchronous motor vector control structure of no-velocity sensor and mathematics model of control system .

复杂构造区叠加速度分析

Stack velocity analysis in complex structural area

从勒夫波的成像结果我们可以看出各主要构造单元的速度差异。

From the images of Love wave , we can know that there are differences of velocity among the major tectonic units in this area .

本文深入分析了异步电动机在不同坐标系下的数学模型，利用坐标变换实现了异步电机数学模型的解耦，按转子磁场定向构造了无速度传感器矢量控制方案。

The coordinate transform is used for a decoupling of induction motor mathematical model . By the rotor field oriented constructed speed sensorless vector control system of induction motor .

川东高陡构造由于层速度在横向上的剧变，通常的时间偏移处理不能使反射正确归位，得不到正确的构造形态和高点位置。

Owing to the extreme lateral change of the interval velocity of the steeply folded structure in east Sichuan , the normal time migration process makes reflection position not correct and distorts structural shape .

叠前深度偏移是复杂构造和横向速度剧烈变化条件下的最佳成像手段，克希霍夫叠前深度偏移是应用比较广泛的一种叠前深度偏移方法，它计算效率高、成像效果比较理想。

Pre-stack depth migration is the best imaging methods of the complex structures with velocity greatly changed . Because of its high efficiency and good imaging effect , pre-stack depth migration by Kirchhoff integration is widely used in pre-stack depth migration .

本文在Shannon取样定理的基础上，选择新的取样定理函数，构造了具有收敛速度快，数值计算简单等优点的高速取样定理。

This paper establishes a new high-speed sampling theorem by selecting a new basic function on the basis of Shannon theorem . The new theorem has a fast convergence rate . At the same time we can do numerical computation easily by the new theorem .

盆地构造地震地面运动速度和加速度分布特征的数值模拟

Velocity and acceleration characteristics of seismic ground motions related to basin structure

采用模型层析法，可消除地层大倾角、大幅度构造翼部产生的速度畸变，获得精细准确的构造图。

Geodetic inclination angle , large scale of velocity distortion caused by tectonic wings are eliminated , thus an accurate structural diagram is obtained . model .