查询词典 time of pulse

That is the speed identification and the rotor flux estimation scheme of the sensorless vector control, and realization ways of the carrier pulse width modulation, and the dead time compensation scheme.

即无速度传感器矢量控制的速度辨识和磁通观测、载波型PWM方法实现、死区时间补偿方案。

The cyclical pulse load consisting of a haversine load time and a rest period is adopted to simulate the actual vehicle load, and the permanent strain model under the repeated load is derived from the rheological and viscoelastic theories.

采用半正矢波间歇荷载模拟实际轮载作用，综合运用流变学和粘弹性力学理论推导了周期性荷载作用下沥青混合料永久变形的力学模型。

The relation between the center of time gravity of the ultrashort pulse and the carrier phase was studied by using three kinds of pulses,named Gauss,Hyperbolic Secant and Lorentz pulses.The analytical expressions of the relation between them was deduced.

以Gauss、Hyperbolic Secant、Lorentz三种脉冲为例，利用理论推导和数值模拟的方法研究了载波相位对超短脉冲时间重心的影响，并给出了三种脉冲的时间重心与载波相位的解析表达式和数值模拟的图形。

This symbolizes the time we live in and the hope of mankind. Even at ice point, where there is no heat or passion, the dynamic zero-degree pulse is our hope and is the evidence of our existence.

这也象征了这个时代，乃至人类的希望，即使到了冰点，已没了温度和热情，那跳动的零度脉搏就是我们的希望，是我们存在的理由和证明。

In Chapter 4, A detailed comparison between the realization of Cholesky decomposition and OR method is given, a systolic/wavefront array made of general purpose DSP is used to realize the adaptive beamforming at a moderate speed, and a wavefront array to extract the adaptive weights which is necessary in some applications is designed. In Chapter 5, the author proposed a new structure to realize the space time adaptive processing. First 1~q using the FFr and the truncating infinite sequence and sone optimizing method, a much simpler architecture can be acquired in realizing the three portion of channel processing: quadrature sampling, pulse compression and adaptive equalization.

第五章研究并提出了用全通用DSP模块设计空时二维自适应信号处理机的新方案，首先用快速付立叶变换和对长序列截断处理的重叠保留法以大大减少的运算量完成了处理机通道处理部分的正交插值、脉压、自适应均衡三个功能块的长阶数线性卷积运算，接着对自适应波束形成提出了多种实现方案，分析了多种方案下的运算量和设备要求，指出在不同通道数、不同数据吞吐率、不同自适应要求时这几种方案有不同的可行度和实现难度，并针对实际要求确定了一种运算田N、的实现方案，对自适应波束合成部分的大量贝玉以良元组咸肋冈络结拘和处凰闺和羽凶挝娠昨了优化设计以威少设备复杂性，构成了设备量大夕父伯小、们g团回高、辜于生回阴田闩引愧快的空时二维自适囱戏升引毗四机。

The comparison of blood loss and operation score between two neighboring groups both showed no significance. Also, we found significant difference between group4 and group 7, as well as group5 and group 7 in their operative time comparison (P=0.045 and 0.028, respectively). No complications but a slight subcutaneous emphysema happened on the 21 cases.3. When the electronic pulse-wave mode insufflator is working, IAP of patients may reach 40mmHg, more than twice of the setting point, 15mmHg.

相邻两组的手术时间比较为第5组与第6组间差异有显著性(P=0.034)，相邻两组的出血量比较差异均无显著性(P值分别为0.273，0.607，0.731，0.494，0.863，0.494)，相邻两组的手术得分比较差异均无显著性P值分别为0.761，0.729，0.344，0.873，0.074，0.816非相邻组别的手术时间比较为第4组与第7组、第5组与第7组间差异有显著性(P值分别为0.045，0.028。

In this paper,the integral equation of time domain is used to determine the spatial distribution of electric-field in an electromagnetic pulse simulator.

本文利用时域积分方程计算了电磁脉冲模拟器空间场的分布。

The power supply can acquire real time online voltage signal of electric network and input into inverting system; generate synchronous signal and effective value of amplitude signal, then become SPWM pulse by wave generating chip SA4828. High degree sinus and good anti-disturbance performed power supply inverting can be also realized.

该电源可以在线实时采集电网电压送入逆变系统，实时产生同步信号和幅值有效值信号，通过波形产生芯片SA4828实时产生和采样电压同频同步且幅值可调的正弦脉宽调制脉冲，并采用开关线性复合功率变换技术，实现高正弦度和强抗负载扰动性能的电源逆变。

As we known, common Loran - C receiver employs a fixed da- tum - mark in order to avoid interference caused by skywave, as the SNR is often poor at this point due to the amplitude limit of the pulse envelope, so it greatly increases time for tracking the datum - mark.

常规接收机为了防止天波干扰，将基准点设置在一个固定位置上，导致基准点处信噪比受包络限制而较低，从而大大增加了对准基准点的时间。

It consists of many ele- mentary pulse networks such as: Transistor forming and shaping circuit,trrnsistor blocking oscillator,multivibrator,time delay circuit and "and" gate,etc.

本文专门讨论了利用脉冲选择的晶体管化同步分频系统的线路综合原理和研制技术问题，对组成系统的各种单元脉冲电路，如晶体管窄脉冲形成器，晶体管间歇振荡器，晶体管多谐振荡器，晶体管延迟电路以及晶体管门电路等均作了较深入的分析，并给出相应的实验结果。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。