这些高频率与离心机的转速相对应；美国对能够以600赫兹以上频率运行的频率转换器驱动的出口进行了严格管控。
These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.
在大功率晶体管逆变器——电动机驱动系统中，它不但可用来对电动机电流的波形、相位、幅值和频率进行精细控制，而且能快速地检测出故障电流。
In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.
通过振动装置的功率计算，分析了振动频率对驱动功率的影响。
In addition, by count of vibration power the influence of the vibration frequency on driving power is analysed.
主要研究适用于高开关频率变频器驱动的感应电动机数学模型。
Inductive motor mathematics model suitable for high switching frequency inverter drive is described in this paper.
其中，激光频率设置为连续可调，激光器的驱动电流6~30A连续可调。
The semiconductor laser power supply features continuous adjustable laser pulse frequency and continuous adjustable laser driving current of 6~30A.
在此基础上，介绍了小数分频器在直接数字频率合成技术和步进电机驱动速度控制中的两种常见应用。
Applications of decimal Fraction frequency divider in the area such as direct digital frequency synthesis technology and stepper motor drive speed controller a re introduced.
根据用户要求，可与ALC(频率监控仪)的连接，可以采用触摸屏与PLC程序控制，可以采用交流变频电机驱动。
ALC can be connected; revolution, speed and pressure can be adjusted by touchable screen and PLC program as required. Can be driven by ac frequency conversion electric machine.
文中介绍了基于这一原理的微型磁强计，对传感器的固有频率和驱动电压进行了分析和计算。
This paper introduces the micro magnetometer and analyses the natural frequency and driving voltage of the sensor as well.
以几何图形平均识别成功率作为评价衡量触觉显示质量的指标，分析了驱动频率与触觉感受的关系。
Regarding Identification geometry graphics average success rate as guideline which expresses tactile display's quality. The connection between tactile sense and drive frequency is analysed.
扫描采样率对成像质量至关重要，可通过驱动信号的频率选择和图像采集时间的设定来控制。
The scanning sampling density crucial to imaging quality can be deliberately controlled by setting of the driving frequencies as well as fetching duration.
所研究的控制方法均在AC200交流伺服驱动系统的频率域实验模型上做了仿真实验，结果支持了本文分析所得的结论。
All the concerned control strategies are supported with the simulation results that are made on the experimental frequency domain model of the AC200 servo drive system.
同时，本文还在实验中发现了，相位响应的线性化程度会随着驱动频率的提高而降低。
Furthermore, it is found out in the experiments that the degree of phase response linearization of liquid crystal modulator decreases with driving frequency increasing.
分析了LCLV驱动信号的电压幅值、频率、占空比以及屏幕照度等诸多因素对投影系统对比度特性的影响。
The effects on the contrast of the LCLV projecting system, such as the LCLV driving signal voltage, frequency, duty cycle and the display screen illumination were analyzed.
论文中还设计了一种新型的IGBT驱动电路，它具有开关频率高、驱动功率大、结构简单且具有负压关断的特点。
A new drive circuit for IGBT is designed. It features high switching frequency, high driving power, simple-structure and reverse-turn-off.
试验证明，该驱动电源的运行频率、矩频特性、效率等明显优于同类产品。
The experiment illustrates that operation frequency, torque-frequency characteristics, efficiency etc. of the driving unit is superior to the same one.
控制回路由启动、频率跟踪、驱动信号、缺水保护电路组成。
The controlling loop includes start-up circuit, frequency tracking circuit, driving signal circuit, and water lack protecting circuit.
声光晶体由行波场驱动，声场频率则由系统的反馈讯号控制。
The frequency of the sound wave is controlled by the feedback signal of the system.
陀螺驱动频率响应曲线有两个谐振尖峰，在两峰值之间存在一个较平坦的区域。
The frequency response of the drive-direction oscillator has two resonant peaks and a flat region between the peaks.
传统电压控制模式的电机驱动电路系统频率都受电机的本征频率制约，其相位延迟会随负载的变化而变化。
The system bandwidth of conventional voltage-control-mode motor driver circuits is limited by the intrinsic frequency of the load, and its phase lag is also load-dependent.
本系统采用了高低压驱动电源和串联电阻法，以提高步进电机的工作频率。
This system uses a high-low supply voltage and a series resistance for increasing the working frequency of the step motor.
本文主要研究高频功率MOSFET的驱动电路、频率跟踪电路以及功率调节电路。
This thesis pays more attention to the drive circuit of high frequency power MOSFET, power regulation circuit and frequency-tracing circuit.
测试结果表明，该单片三轴硅微机械振动陀螺仪驱动模态的实际谐振频率与理论值之间的最大误差小于5%，满足设计要求。
The results indicated that the maximum error of the resonant frequencies be - tween the practical values and the theoretical ones was within 5%, meeting the design requirements.
在这里所看到的是金属板，这次是连接到一个声音驱动装置，由频率产生器送出振动。
What we can see here is the metal sheet, this time connected to a sound driver, and being fed by a frequency generator.
其中主要就墨滴形成频率，墨滴飞行速度，驱动信号及驱动电路等关键参数进行了比较。
The comparison dealts mainly with the frequency of drop forming, the velocity of drop flying, the drive signal and the complexity of drive circuit.
讨论分析了衬底驱动MOSFET的工作原理、频率特性和噪声特性，并对其低压特性进行了分析和仿真。
The fundamental principles of the bulk-driven MOSFET, along with the frequency and noise characteristics, are discussed. The analysis and simulation of its low voltage characteristics are also made.
在此系统中，首先使用计算机来产生一个频率可调的超声波驱动信号，然后通过对马达转数的检测，系统得到压电超声马达的最佳谐振频率值。
In this system, a frequency-adjustable ultrasonic drive signal is made by computer, then based on the motor 's revolution number, system can automatically find the syntonic frequency of motor.
驱动器工作在脉冲模式下，产生重复频率和脉冲间隔可调的驱动信号。
The driver operates in the pulse mode, and can generate drive signal whose repeat frequency and pulse interval is tunable.
介绍了天线系统驱动机构扭转振动谐振频率的计算方法。
This paper introduces the computation method on the harmonic frequency of the torsional vibration in the mechanism of an antenna system.
我们研究了在强近共振激光脉冲驱动下，二能级原子对不同频率的试探脉冲的瞬态反应。
Transient responses of two-level atoms to a probe pulses with different frequencies have been studied in the presence of near-resonant laser driven pulse.
结果表明，随着驱动电流和频率的增加，驱动膜有一个最大的位移值。
The experimental results show that there is a maximum displacement of the film when increasing the actuating current and frequency.
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