首先建立了脉动风荷载的功率谱密度函数矩阵。
The matrix of power spectral density function of fluctuating wind load is established first.
在小功率领域，如对调速精度、转矩脉动要求不高的洗衣机、电动自行车等，开关磁阻电机具有较强的应用优势。
There is predominance in some low power applications such as the washer and the electrical bike in which the timing precision and the torque ripple are not strictly concerned.
得出了各地震台台基的脉动噪声的均方根值、观测动态范围、地噪声功率谱。
The article calculates the mean square root values of pulse noise, observational dynamic range and power spectrum of ground noise of all seismic station bases.
研制了直线电机及其功率驱动器，作为细胞脉动流实验驱动源。
We developed a line motor and its power amplifier, which acted as the driving mode of the cell pulsatile flow experiment.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
本文应用谱分析理论研究了剪切湍流场中的压力脉动，包括功率谱、均方值等。
The pressure fluctuations in turbulent shear flows are investigated with the theory of spectral analysis.
在毛细滞后阻力方面，改进了所建立的高功率脉动热管的模型，进一步研究了脉动热管的流动和传热特性。
On the resistance of capillary hysteresis, the model of high power pulsating heat pipe is improved and the flow and heat transfer are further studied.
为此，在一次接线上采用了双12脉动阀组接线，使得一个阀组故障时仍可传送一半功率。
In order to improve its reliability, the main electric connection mode with double 12-pulse valve groups is adopted.
导出了基波电磁功率、稳定谐波电磁功率及脉动谐波电磁功率的计算公式。
Then, the calculation formulas of the fundamental and steady harmonic as well as pulse harmonic electromagnetic powers are derived.
本文应用自适应最小二乘格型（LSL）算法估计非恒定流压力脉动的功率谱密度。
This paper uses the adaptive least squares lattice algorithm (LSL) to calculate the spectral estimation of pressure fluctuations in unsteady flow, and describes the principle of the LSL algorithm.
建立了基于功率变换器的有源式超级电容器-蓄电池混合储能系统的模型，并对控制环节进行了设计，提出了一种在脉动负载下蓄电池恒流输出的控制策略。
A mathematical model of the actively controlled battery-ultracapacitor hybrid energy storage system based on a power converter was set up, and the control loop was designed.
通过主回路、引弧电路、稳弧电路的共同作用，解决了一般弧焊电源输出脉动大、功率因数低的缺点。
The problem of annual arc welding power source whose output is surge and power factor is lower, is solved by means of main circuit, arc ignition circuit and arc static circuit working together.
在仿真中采用详细的汽轮机压力功率模型，着重研究了汽轮机蒸汽压力脉动与电力系统发生共振振荡的关系。
The detailed pressure-power model of turbine is adopted in simulation, and then the relationships between turbo-pressure pulsation and power system forced oscillations are studied in particular.
以矿井直流提升机供电系统为研究背景，对大功率直流电力传动装置，特别是串联12脉动整流电路进行了谐波特性分析。
With the hoist electric net in coal mine as the background, the harmonics characteristics of big DC electric power drives, especially 12-pulse serial converter is analyzed.
适用于频率特性高、功率大、耐高压的节能灯电路和各类电子仪器的直流或脉动电器中。
Suitable for DC or pulsed circuit in various economical lamps and electronic instruments requiring a high frequency characteristic, high power and high voltage withstand.
系统阐述了这种方法的分析过程，其中涉及到脉动风压规格化功率谱的推导以及脉动风荷载功率谱的计算。
Relating to the deduction of wind pressure uniform spectrum and calculation of wind load spectrum, analytical progress of M. Shinozuka method is systemically discussed.
系统阐述了这种方法的分析过程，其中涉及到脉动风压规格化功率谱的推导以及脉动风荷载功率谱的计算。
Relating to the deduction of wind pressure uniform spectrum and calculation of wind load spectrum, analytical progress of M. Shinozuka method is systemically discussed.
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