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.
实验结果证明了该电路能实现三相逆变器开关管的软开关、改善输出波形质量。
The experimental results verify that the circuit mentioned above can realize the soft-switching, improve the quality of output wave.
通过正确地选择波纹管制作材料和结构、合理设计波形参数和疲劳寿命、保证安装质量等措施,可提高波纹管补偿器的安全可靠性。
This paper sates that selecting bellows material correctly, designing waveform parameter and fatigue life, ensuring installation quality can improve the safety and reliability of bellows compensator.
本文所设计的正弦信号发生器主要由DDS波形产生模块、单片机控制模块、键盘输入模块和数码管显示模块组成。
This system consists of DDS signal generator module, MCU control module, keyboard input module and nixie tube display module.
同时求解了采用该乳胶管弹簧下的超低频标准振动台的运动方程近似解,得到了波形失真度计算式。
The formula of waveform distortion is obtained by the approximate result expression of nonlinear equation about ultra low frequency standard vibrator with this kind of emulsion pipe spring.
数值求解了电路中各电容器和激光管的放电电压和电流脉冲波形,得到了与实测波形一致的模拟结果。
Numerical solutions of discharge voltage and current pulses on each capacitors and laser tube in the circuit are in good agreement with the experimental ones.
晶体管交流毫伏表只能用于正弦电压测量,使测量任意波形电压受到限制。
Transistor AC millivoltmeters specially used to measure the sinusoidal voltage are limited in measuring any other waves of voltage.
针对逆变桥功率开关管短路、开路及霍尔传感器缺相等故障进行了仿真,得到了相应的特征波形。
The faults including short circuit, open circuit in power transistors and phasefault in Hall sensors are simulated and performance waveforms relevant to different faults are obtained.
用条纹相机测量比较了雪崩晶体管和弧光放电充气管电光开关所给出的削波波形。
The chopped waveshapes of an avalanche transistor and krytron electrooptics gates are compared by streak camera measurement.
设计了一种能对输出电流实现多种波形调制的半导体激光二极管(LD)驱动电源。
The design of a laser diode(LD) driver that can generate multi-waveforms for the modulation of drive current was present in this paper.
它采用了绝缘栅极双极型二极管和电压型换流器,控制和运行方式简单,输出波形好,具有广阔的应用范围和良好的发展前景。
It can be widely used for its easy and simple control and operation as well as for its good output waveforms.
在相同电路参数时,经模拟得到的放电管电流脉冲波形和实测的波形相一致。
The discharge current pulse of the laser tube obtained by simulation is consistent with that of experimental measurement on the same condition of circuit parameters.
系统硬件包括按钮开关输入电路、七段数码管输出电路、加热电路、升压电路以及波形控制产生电路。
The system hardware includes switch input circuit, seven segments LED output circuit, heating circuit and boost circuit.
有些三极管产生的波形会比其他的要好。
波形的产生可以采用两块555芯片,波形的发射可以使用红外线发射二极管。
Waveform generation can adopt two 555 chip, waveform launch can use infrared emission diode.
传统二极管箝位变换器的电压变化率和共模电压较高,且波形谐波含量较大,使得输出滤波器的设计变得复杂。
Traditional diode-clamped converters have high voltage variation rate, common-mode voltage and harmonics, which make the design of its output filter complicated.
采用焊管作为管坯 ,焊管弯曲采用专用模具热弯 ,焊接采用等离子弧焊。超塑成形采用多层模结构 ,用模具来控制波形。
Welded pipe that bended by hot bending method with a set of specific die and welded by plasma arc welding method was used as tubular blank of SPF.
提出了两方面的改进措施,即通过改进波纹管波形参数以增加疲劳寿命,以及通过改进波纹管材料以增加波纹管耐腐蚀性能。
And two improved measures were brought forward. One was improving the wave shape parameters so as to prolong the fat...
提出了两方面的改进措施,即通过改进波纹管波形参数以增加疲劳寿命,以及通过改进波纹管材料以增加波纹管耐腐蚀性能。
And two improved measures were brought forward. One was improving the wave shape parameters so as to prolong the fat...
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