系统的分析了频率跟踪移相PWM控制全桥供电的串联谐振负载式DBD型臭氧发生器电源系统的工作过程。
The working processes of the frequency-tracking phase-shift PWM controlled full bridge power supply load series resonant type DBD ozone generation power system are analyzed.
利用变量分离法推导出桥模式RFMEMS开关的频率方程组。
The frequency equation of RF MEMS switches was derived by separation of variable.
通过数值算例验证了体外预应力对简支梁桥振动频率和振动模态的影响。
And numerical example is adopted to explain the influence of external prestress to the vibration frequency and modality for simple beam.
运用一阶单时间常数低通函数模拟运算放大器的开环增益，对RC桥式振荡电路进行线性分析，得出最大振荡频率为运算放大器增益带宽积的16.67%。
The maximum frequency of RC-bridge oscillator is 16.67% of gain bandwidth product of amplifier analyzed based on a first-order single time constant lowpass function model.
采用车-桥系统相互作用的计算模型，对不同跨度简支梁桥的竖向有载自振频率进行了深入研究。
The vertical loaded free frequencies for the different span simply supported beam Bridges are investigated with the vehicle bridge system model.
经与有限元计算结果比较后可知，所识别的全桥气弹模型固有频率和振型结果令人满意。
The identified natural frequencies and mode shapes are found satisfying via a comparison with those obtained by finite element computation.
由于该电路能较好地实现多桥交替工作，降低开关器件频率，提高系统效率，因此，本文所做研究取得了良好的实验效果。
As the circuit can achieved Bridges' alternate work, and reduce the IGBT's switching frequency, and increase system's efficiency, therefore, good results of this paper is acquired.
为了研究射频对电火工品的影响，利用传导方法分别测定了三种不同的桥丝式电火工品试样的敏感频率，然后在敏感频率条件下根据升降法对试样的射频感度进行了测定和计算。
The sensitive frequency were measured using conduction method, and the radiofrequency sensitivity was tested and calculated in the condition of sensitive frequency based on the up-down method.
此外，利用该桥的实测数据分析了结构固有频率受温度的影响规律，修正了结构模态参数的辨识值。
Then the temperature effect on the structural model frequency is analysed, and the model parameter identification results are modified.
利用单元局部频率变化率法和单元模态应变能比法，对连续梁桥进行了损伤诊断的数值模拟研究。
Based on element local frequency change ratio method and element modal strain energy ratio method, numerical study is carried on to detect the damage of the bridge.
各阶自振频率较加固前要大，全桥刚度有所增加，加固后动力性能明显改善。
Also, the vibration frequency bands reinforcement than before, the whole bridge has increased stiffness, reinforced significantly, improved dynamic performance.
对光照射下硅桥谐振子的谐振频率变化进行了理论分析，并建立了相应的理论模型。
A theoretical model is developed for calculating the frequency of the silicon bridge under radiation.
逆变电路选用全桥式电路拓扑结构，逆变频率选为22khz，并以IGBT作为主电路的开关功率元件。
Full bridge topological structure, the frequency of 22khz, IGBT switching power device were adopted for inverter.
文章按七种不同的车辆模型计算了列车分别以五种不同的速度过桥时桥梁的空间动力响应以及列车在桥上不同位置时车-桥系统的自振频率和振型。
Seven kinds of different vehicle models are used to calculate the space dynamic responses of the bridge on which a train moves at five different speeds.
分析了级联H桥型变换器的工况，讨论了载波带频率变化的PWM（VFCB-PWM）技术，提出了基于VFCB-PWM技术的级联H桥型多电平变换器。
The principle of cascade H-bridge converter is analyzed. Variable-Frequency Carrier Bands PWM(VFCB-PWM) technique is discussed. Cascade H-bridge converter based on VFCB-PWM technique is proposed.
分析了级联H桥型变换器的工况，讨论了载波带频率变化的PWM（VFCB-PWM）技术，提出了基于VFCB-PWM技术的级联H桥型多电平变换器。
The principle of cascade H-bridge converter is analyzed. Variable-Frequency Carrier Bands PWM(VFCB-PWM) technique is discussed. Cascade H-bridge converter based on VFCB-PWM technique is proposed.
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