A new Space Vector Pulse Width Modulation (SVPWM) method based on control factor is proposed.
介绍一种基于控制因子的三电平空间矢量方法。
The stress concentration factor (SCF) decreased with the increase of the width of plates when the hole diameter was definite.
结果表明:在开孔尺寸一定的情况下,随着板宽的增大,开孔损伤板的应力集中因数减小;
However, when comparing the quickness of edge changes among boards of different width, the width takes over as the determining factor, with narrow boards quicker edge-to-edge.
然而,当比较不同宽度的板之间的边缘变化速度,宽度接任的决定因素,窄板快边缘到边缘。
Compared with conventional passive inductors with fixed metal width and space, an inductor with gradually changed mental width and space is put forward to improve its quality factor.
与传统的金属线宽和间距固定不变的无源片上螺旋电感相比,线宽和间距由外圈到内圈渐变的新型结构电感能有效提高电感品质因子。
As an example, the asymmetrical coefficient of the non tidal Jianjiang River is resolved under the condition that the river width is chosen as the most important factor to signify the river size.
作为实例,对广东鉴江非感潮河流,选取河宽为最重要因素来表征河流大小,求其不均匀系数。
Currcnt-type four quadrant converter is an AC-DC converting device with pulse width modulation, whose advantages are high power factor, low harmonic current and convenient regeneration etc.
电流型四象限变流器是一种脉冲宽度调制的交直流变换装置,具有功率因数高、谐波电流小、再生方便等优点。
According to the regression equations, we can discover which factor affects the track width and control parameters and how much impact on the nearby port waters by that factor.
根据回归方程可知是哪些因素对航迹带宽度、转弯半径、制动距离、旋回圈半径产生影响,以及各因素对这些量影响程度的大小。
When polymer relative molecular mass and its distribution width are the same, the polymer displacement efficiency increases with the increment of the core permeability variation factor.
当聚合物的相对分子质量及其分布宽度相同时,随着岩心渗透率变异因数的增大,其聚合物驱采收率也随之增加。
Our 3D BEM(Boundary Element Method) calculation shows that the larger the notch width is, the bigger the error makes for the dimensionless stress intensity factor.
通过三维边界元计算分析表明,切槽宽度越大,无量纲应力强度因子的标定值就越大;
The effects of finite length and finite width on the stress intensity factor are achieved by using the fundamental solution and the boundary condition.
利用基本解和边界条件可以计算板长和板宽对应力强度因子的影响。
The calculated results demonstrate that the square crystal can obtain higher quality factor, though its band-gap width is narrower than…
结果表明,尽管四方晶体的带隙宽度比三角晶体窄,但能获得更高的品质因子,更有利于提高滤波分辨率和耦合效率。
Including influence of the section shape, the different water condition between floodplain and channel is another import factor that influents the resistance distribution along river width.
阻力沿河宽分布除河道断面形态影响之外,滩槽水流差异也是不可忽略的。
The method given in the paper can be used to determine the sliding surface shape and the safety factor, and enables one to study width effects of the sliding collapse.
本方法可以确定三维滑裂面形状和安全系数,同时可研究滑坡的宽度效应。
The device parameter as well as resonance frequency, mechanical quality factor and work band width were determined by the equivalent circuit input impedance admittance circle diagram.
分析压电式超声波换能器的等效电路,并由等效电路输入阻抗的导纳圆图确定了换能器的元器件参数以及谐振频率、机械品质因数和工作带宽等特征参量。
Weld-shape(butt weld width, size of fillet weld)is an indicator of weld features and it also is an important factor of quality welding.
焊缝尺寸 (如对接焊缝的焊缝宽度、角焊缝的焊角尺寸等 )是表示焊缝形状特征的指标 ,是影响焊缝质量的重要因素之一。
Besides, the depth of topmost geogrid to the width of strip footing is also greatly correlative to the safety factor, and the best ratio changes with the layers of geogrids.
此外,顶层筋材埋深与条基荷载宽度比值大小与边坡的安全性密切相关,其最佳比值随加筋层数不同而改变。
The width and length of feeding can be stepless adjusted accurately, suitable for the arrangement of different mould, with high use-factor of the sheet.
送料宽度和长度均可无级调整,调整准确,能适用不同的模具的排列,材料利用率高。
The half width of transmission peak is steppedly reduced and the Q-factor on the confined state is steppedly increased with the increasing of the dielectric thickness in well.
阱区介质厚度与束缚态半峰宽呈阶梯形状降低,而阱区介质厚度与束缚态品质因子呈阶梯形状升高。
Some factor that influence the limit of height-to-width ratio is discussed because reliability of base isolation structure is mainly determined by height-to- width ratio.
隔震层的阻尼对结构的抗倾覆可靠度及承载力可靠都有影响,但对抗倾覆可靠度的影响更为显著。
The time domain characteristics were studied both the UWB antennas and array proposed in this thesis with correlation factor and the pulse width stretch ratio (SR).
本文使用相关系数和脉冲宽度拉伸这两个重要的参数对超宽带天线及天线阵列进行了时域特性评估。
The structural principle of the linear width type voltage regulator is presented and the expressions for selecting and computing the reference voltage and the duty factor are given.
本文首先阐述了线性调宽式开关稳压器的组成原理;其次,计算了基准电压及占空系数,推演出电压调整率、输出内阻、效率等三项性能指标的数学公式;
The structural principle of the linear width type voltage regulator is presented and the expressions for selecting and computing the reference voltage and the duty factor are given.
本文首先阐述了线性调宽式开关稳压器的组成原理;其次,计算了基准电压及占空系数,推演出电压调整率、输出内阻、效率等三项性能指标的数学公式;
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