同时,高速交流传动机车广泛采用高开关频率器件的脉宽调制(PWM)逆变器,使得逆变器输出脉冲具有陡上升沿。
Meanwhile, PWM inverters using high switching frequency device that shortens the rise time of PWM output pulse have been widely applied in high-speed AC driving locomotive.
通过数值计算,研究了快上升沿电磁脉冲信号在有界波模拟器中的传输特性。
This paper studies transmission characteristic of fast rising time EMP (electromagnetic pulse) signal in bounded-wave simulator by using numerical calculation.
通常的脉冲发生器只是在电阻性负载时才能得到陡的上升沿。
General pulsers can obtain sharp risetime only when it is used for a resistive load.
脉冲发生器作为测试领域的一种重要测试工具,在实际的工程应用中对其提出了电平、幅度、上升沿在大范围可控的设计要求。
As an important instrument of modern testing and measuring field, it's required that the pulse generator's amplitude. level and rising edge can be widely controllable in the application.
通过控制激光通过声光窗口的光束大小来约束声光开关的上升沿时间,以此判断对输出光脉冲的形状的影响。
The characteristics of Q-switched pulses with different rise time of AOM regulated by the laser beam size along the window of AOM are presented.
从脉冲包络上升沿方面进行分析研讨,提出一种利用上升沿进行基于多脉冲乃至单脉冲的雷达个体识别方法。
This paper performs the analysis and discussion from the aspect of the pulse envelop rising-edge, presents a kind of radar SEI method based on multi-pulse even single pulse by using rising edge.
在UWB通信中,利用赫兹磁偶极子天线的微分特性,由输入方波的上升沿产生窄脉冲。
For a UWB communication system, by using differential characteristic of Herz magnetic dipole antenna, the narrow pulse can be produced from the rise edge of input square-wave signal.
穿过电离层脉冲时间偏度数值为负,表明能量分布偏向上升沿。
The temporal skewness of trans-ionospheric pulse is negative, which means its energy is shifted to the leading edge.
该结论对开展电磁防护研究及快上升沿电磁脉冲场模拟器的设计具有一定的参考意义。
The conclusion has some reference meaning for electromagnetic protection and designing fast rising time EMP simulator.
然而,逆变器输出的PWM(脉冲宽度调制)连续高压脉冲的上升沿很陡、频率很高,导致在脉冲电压下牵引电机绝缘过早失效。
However, Pulse Width Modulation (PWM) which was input from inverter is characterized by steep rising edge and high frequency, resulting in the too early failure of motor insulation.
将上升沿和下降沿均不同的时域脉冲波形馈入到轴向模式螺旋天线中,得到不同的辐射场情况。
Several different time domain waves with different ascending time and degressive time are fed into axial-mode helical antennas, and different radiated fields are gained.
电流脉冲上升沿几乎与平均电流、气压或并联电容无关。实验结果表明,自脉冲现象是空心阴极本身的一种特征放电过程。
The self-pulsing current has unchangeable rising time under various conditions. The experimental results indicate that the self-pulsing is a behavior controlled by the discharge process.
电流脉冲上升沿几乎与平均电流、气压或并联电容无关。实验结果表明,自脉冲现象是空心阴极本身的一种特征放电过程。
The self-pulsing current has unchangeable rising time under various conditions. The experimental results indicate that the self-pulsing is a behavior controlled by the discharge process.
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