Meanwhile, the driver had the functions of constant current chopper, index movements frequency and sine wave equal-breadth even subdivision. 驱动器具有恒流斩波、指数升降频和正弦波等幅均匀细分的功能。
What this means is that an electronic chopper, which translates energy to a different portion of the frequency spectrum, modulates the load. 意思就是说一个电子斩波器将负载调制,它会传递能量给频谱的另一部分。
With the shift-phase modulated multiple chopper circuit, the equivalent switch frequency can be improved, so it can be used in large power occasion. 采用移相调制的多重斩波电路,可以提高等效开关频率,因此可应用在中大功率场合。
When the modulator ( or optical chopper) of the NIR spectrophotometer was error, the frequency and shape of modulating wave would be changed, and the measuring signal of the spectrophotometer must be smaller. 调制器的误差会引起调制波频率和形状的变化,从而影响近红外光谱仪器检测信号的强度。
After focused by lens, chopped by chopper and received by detector, infrared signal is transformed to electric signal whose frequency is 20 Hz in this infrared system. 在红外测温系统中,红外信号经过光学系统的汇聚、斩波器的调制和热释电探测器的接收后转变成频率为20Hz的脉冲信号。
This paper introduces the manufacturing technology and the main characteristics of a super conducting chopper. The optimum working frequency, of it is 100-300 Hz, and its sensitivity is smaller than 9 × 10-9V. 本文介绍了超导斩波器的制作工艺及其主要性能,该斩波器的最佳工作频率为100&300Hz,灵敏度优于9×10~(-9)V。
In great power magnetic suspension system, the great power chopper with relatively high chopping frequency must be equipped for the control of currents in electromagnets. 在大功率磁悬挂系统中,电磁铁电流必须采用开关频率较高的大功率斩波器来调节。
For adopting the constant current chopper technique in the driver circuit, the efficacy of power and the capability of high frequency are improved and the resonance is suppressed. 驱动电路采用恒流斩波技术,电源是脉冲供电方式,提高了电源效率,并能有效地抑制共振,无须外接影响时间常数的限流电阻,提高了高频性能。
The chopper circuit controls the output pulse by regulating the dutyfactor and the frequency of switch driving signal. 斩波电路通过调节开关器件频率和占空比,控制输出波形。
Thermopile infrared sensors, the output of which are effected by temperature, chopper frequency, incidence angle and transmission of optical filter, has multiple-input and single-output characteristic. 热电堆红外传感器的输出受温度、遮光频率、入射角度和光学滤波器的透光度的影响,因此,具有多输入单输出特性。
Several key factors affecting the image quality were discussed, such as the spot size on the surface of the object, chopper frequency, step length, light intensity, image processing and so on. 分析了影响成像质量的几个关键因素,如样品处的光斑大小、斩波器频率、步长、光强、图像处理等。
The work principle of a three-level AC chopper has been analyzed. Clock-interleaved unified frequency integration control is proposed to implement the closed-loop control of three-level AC chopper. The theory analysis is verified by the simulation experimental results. 本文研究了一种三电平交流斩波器的工作原理,提出了基于时钟交错的定频积分控制方案,仿真结果验证了理论分析的正确性。