The results indicate that the dead time effect distorts inverter output voltage and current waveform and increases torque ripples of the motor.
结果表明,死区效应引起了逆变器输出电压波形畸变,引起了电机电流波形畸变和转矩脉动。
According to the character of short-circuit transfer, the welding current was accurately controlled by this system, and the real welding voltage and current waveform was given.
该系统根据CO2焊短路过渡特点,对焊接电流进行较为精确的控制,并给出了该系统实际施焊时的电流电压波形。
Through simulation and measuring, a corresponding state locus diagram and a voltage and current waveform and output characteristics are thus made, from which a useful conclusion is reached.
作出对应的状态轨迹图,通过仿真和实测,求出相应的电压、电流波形及输出特性,从中得出有益的结论。
The metering error considers the non linear effect of the voltage coil and current coil in watt hour meter under different order of harmonics and different distortion degree of input waveform.
计量误差考虑了电度表电压线圈和电流线圈在不同的谐波次数以及谐波大小时的非线性效应。
Since more and more nonlinear equipments have been used in the power supply network, the generated high harmonics current leads to waveform distortion of voltage and current in the supply network.
由于电网中非线性设备的使用日益增多,所产生的高次谐波电流大量注入电力线路中,使得电网电压、电流波形发生畸变。
To acquire the waveform of the arc voltage and the arc current in welding, a date collection system and digital filter is designed in this paper. The experimental result shows that it is Satisfied.
文中介绍了一种为获取焊接过程中的电弧电压及电弧电流波形,设计的一套数据采集系统及数字滤波器,通过实际运行证明收到了满意的效果。
Secondly, the DC voltage loop and inner current closed-loop control method, both to ensure zero static error of the inverter output, but also to ensure that the inverter output waveform.
其次,本文采用直流电压外环、电流内环的双闭环控制方法,既保证了逆变器输出的静态误差为零,又保证了逆变器良好的输出波形。
Analyzes the waveform of output voltage and current of PWM drive circuit, and also gives practical application circuits and test results.
分析了所用的PWM驱动电路的输出电压和电流波形,并给出实际应用电路以及实验结果。
The factors influencing the roughness of aluminium surface are current density, voltage, waveform, frequency, the component and concentration of the electrolyte and it's temperature.
影响PS版砂目结构的因素有交流电的电流密度、电压、波形、频率、电解液成分及其浓度和温度等。
Waveform, working voltage, average discharge current and polarity are automatically transformed by the microcomputer, and thus the hard - wares are decreased. The block diagram of softwares is given.
采用微型计算机,使脉冲波形的转换、加工电压、加工电流、加工(?)性等均由计算机自动切换、减少了硬件,给出了软件框图。
The waveform of step voltage calculated from a triggered lightning current is obtained and it is identical to the measured result.
根据人工引雷实测电流计算了其近区跨步电压的波形,取得了与实测数据一致的结果。
The present invention has no intermediate DC link and thus simplified circuit, low cost, less harmonic component in the voltage anc current waveform and high power factor.
本发明所设计的波形变换方法及其装置,省去了中间直流环节,使线路得以大大简化,显著降低了成本,同时使电压、电流谐波得以减小,并可获得较高的功率因数。
It can be concluded from the result that the real waveform of the three-phase current and voltage can be reverted to the host by the data sampled by the sampler.
结果显示,被采集的数据在主机上显示的波形能够充分还原三相电压和三相电流的实际波形。
The common models to explain APGD are electron avalanche model and streamer discharge model. APGD and DBD can be distinguished by voltage-current waveform and voltage-charge Lissajous figure.
重点阐述大气压下辉光放电(APGD)技术的现状,解释了电子雪崩模型和流注放电理论,并以电压- 电流波形图和电压-电荷李萨育图鉴别介质阻挡放电与大气压下辉光放电。
The common models to explain APGD are electron avalanche model and streamer discharge model. APGD and DBD can be distinguished by voltage-current waveform and voltage-charge Lissajous figure.
重点阐述大气压下辉光放电(APGD)技术的现状,解释了电子雪崩模型和流注放电理论,并以电压- 电流波形图和电压-电荷李萨育图鉴别介质阻挡放电与大气压下辉光放电。
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