查询词典 control vector

Since a great deal of mathematical calculation is needed for the vector control system, parameters identification and software real-time filter, realtime control by a lower speed microprocessor will lead to longer sample interval and thus lower down the performance of control.

由于矢量控制系统和参数辨识及软件实时滤波需要大量的数学运算，若选用速度较慢的微机进行实时控制，为实现上述功能则不得不延长采样周期，从而导致控制性能的下降。

Chaos control ; support vector machines ; least square support vector machines ; state feedback ; stability

混沌控制；支持向量机；最小二乘支持向量机；状态反馈；稳定性

Results The density of vector in the Olympic venues and the whole city declined.The public health goal of the Olympic Games,which was "effective control for the quantity and species of vector in the area related to Olympic Games" was realized completely.

结果 降低了奥运场馆和全市病媒生物密度，完全实现了"有效控制城市奥运涉及区的病媒生物种类及数量"的奥运公共卫生保障目标。

From the basic principles of the AC machine,using the equivalent analysis method, a series of the equations、vector diagram、equivalent circuits of BDFM were obtained, which is the foundation of the analysis and control of the BDFM wind power generation system. The variable structure control was first used to the active and reactive power decoupling control of the BDFM.

无刷双馈电机的功率绕组、控制绕组、转子绕组的极对数不同，电流的实际频率也各不相同，论文从交流电机的基本理论出发，采用等效的方法，得到了无刷双馈电机的基本方程式、向量图和等效电路。

Three-phase Asynchronous Motor;Digital Signal Processor;Intelligent Power Module;Vector Control;Space Vector Pulse Width Modulation

三相异步电动机；数字信号处理器；智能功率模块；矢量控制；电压空间矢量脉宽调制

By theory analysis and using zero voltage vector,a PMSM DTC control system model has been established in Matlab,and the simulation study shows that zero voltage vector can effectively diminish the torque ripple and improve the system performance.

在理论分析的基础上采用零矢量的控制方案，建立了基于Matlab/Simulink的PMSM直接转矩控制伺服系统模型。仿真结果验证了加入零电压矢量可以有效地抑制转矩脉动，提高系统性能。

They included the effect of zero voltage vector in PMSM DTC, the select principle of space voltage vector, the control of stator magnet chain, the enhance of system dynamic performance, and the realization of PMSM DTC system.

主要包括零电压矢量在PMSM DTC中的作用、电压空间矢量的选择原则、定子磁链的控制方式、系统动态性能的保证、PMSM DTC系统的实现等问题，给出了系统的软件设计方法。

The main contributions are as follows:(1) The decoherence suppression of N level Markovian systems is investigatedby the optimal control in the coherence vector representation. The N level Markoviansystem can be described by the master equation, and possesses a standard bilinear formin the coherence vector representation.

本论文利用密度矩阵相干向量表示研究了退相干效应的抑制和相应的纠缠控制问题，论文主要工作包括：(1)在密度矩阵相干向量表示下，利用最优控制研究N能级Markov系统的退相干抑制问题。N能级Markov系统可以用主方程模型描述，在相干向量表示下具有标准的双线性形式。

DsRNA technology was discovered recently, and many studies demonstrated that it could suppress genes more effectively than antisense technology. Inverted repeats of 800 bp TCS cDNA fragments sandwiching a 400 bp GUS gene fragment was inserted into the binary vector pBI121 and placed under the control of 35S promoter, forming a dsRNA expression vector.

DsRNA技术是近几年才刚刚发展起来的新技术，将上述DNA片段正向和反向插入到双元载体pBI121的35S启动子下游，两片段之间由约400 bp的GUS基因片段隔开，形成反向重复序列，由此构建成了表达TCS基因dsRNA的中间表达载体。

Results The density of vector in the Olympic venues and the whole city declined.The public health goal of the Olympic Games,which was "effective control for the quantity and species of vector in the area related to Olympic Games" was realized completely.

结果 降低了奥运场馆和全市病媒生物密度，完全实现了&有效控制城市奥运涉及区的病媒生物种类及数量&的奥运公共卫生保障目标。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。