本文介绍了采用新的脉宽调制原理和微电脑技术，研制出的25赫正弦波铃流源。
In this paper, using a new principle of PWM and the teehnique of storage system in a microcomputer are deseribed, and a 25Hz sinusidal bell current source has been developed.
系统采用空间电压矢量脉宽调制技术得到逆变器的开关控制信号。
The control scheme gets the switch control signal of inverter with the space voltage vector modulation technology.
在大型构件液压同步提升技术中，采用了计算机输出的脉宽调制信号作为电液比例流量阀的输入电流信号控制液压提升器的速度。
In hydraulic synchronizing lifting technology for oversize structure, computer output PWM signal as the input current of proportional valve is used to control the velocity of hydraulic cylinder.
该系统采用IGBT（绝缘栅双极型晶体管）器件，PWM（脉宽调制）控制技术。
The system adopted insulated gate bipolar transistor (IGBT) as its main circuit and pulse-width modulating (PWM) technology.
对比分析了压缩机电机的典型控制方法，并采用了先进的电压空间矢量脉宽调制(SVPWM)技术对压缩机进行控制。
This paper explains the typical control methods for controlling the compressor and adopts a high performance PWM technology (SVPWM) to control the compressor.
系统采用电压空间矢量脉宽调制（SVPWM）技术并设计了具有自举功能的驱动电路。
The SVPWM technology was applied and the driving circuit with bootstrap function was proposed.
针对常用控制方法对负荷保持系统产生的缺陷，采用模糊控制思想，利用PW M脉宽调制技术，达到了很好的控制效果。
Due to usual control methods making defects to retainable load system, fuzzy control with PWM is adopted, which has reached good control results.
采用高频倍压电路，应用PW M脉宽调制技术和大功率IGBT器件。
Adopt high frequency multi voltage circuit, PWM pulse width modulation technology and high-power IGBT devices.
该产品采用独有的变流技术，完全取代现有的脉宽调制充电方式，具有更高的性价比。
This product adopts unique converter technology, completely replace the existing pulse width modulation charging ways, with lower price.
高速开关阀采用脉宽调制(PWM)原理来控制其平均流量，极易实现计算机控制技术和液压技术的有机结合。
The average flux of the PWM high-speed on-off valve are regulated by the Pulse-Width Modulation theory and it is easy to combine the computer and hydraulic control technology.
采用脉宽调制（PWM ）技术发生脉冲信号，设计了控制电路和IGBT驱动保护电路，研制了专用脉冲电源。
The special pulse power supply is researched and manufactured. The PWM is adopted to produce pulse signal.
采用脉宽调制（PWM ）技术发生脉冲信号，设计了控制电路和IGBT驱动保护电路，研制了专用脉冲电源。
The special pulse power supply is researched and manufactured. The PWM is adopted to produce pulse signal.
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