目前除采用一般的直流电外，根据实际的需要还可采用周期换向电流及脉冲电流。
At present in the general of dc outside, according to the actual need to still can use cycle reversing current and pulse current.
电镀工艺参数主要包括电流密度、温度、PH值、搅拌、阴阳极和换向电流等因素，其中影响最大的是电流密度。
Electroplating technological parameter includes factors of ampere density, temperature, PH value, stir, negative and positive pole. The maximum influencing factor is ampere density.
它与换向电流所不同的是不把镀件作阳极，而是间歇地停止供电，由于间歇中断电流，阴极电位随时间周期性地变化。
It and reversing current different is not to be, but with a anode intermittently stop, because the intermittent power supply current interrupted, cathode potential with time periodically change.
无传感器闭环控制模块包括换向调节、电流环调节和速度环调节、正反转速控制等功能。
Sensorless DC motor close-loop control module include reversing control, current loop regulating, the positive and negative rotational speed controls with speed ring etc.
卫星姿控飞轮是由三相轮流换向无刷直流电动机驱动的，采用力矩控制(电流反馈)模式。
Satellite attitude control flywheel is driven by three-phase alternate commutating brushless DC motor, schema of which is torque control model (current feedback).
本文考察和研究了脉冲电镀及周期换向电镀法中各项脉冲参数对钯-镍合金的镀层成份、电流效率的影响。
The effects of pulse and periodic current parameters on the composition of Pd -ni alloy deposit and on the current efficiency of the electrodeposition process have been studied.
提出了减小电机换向冲击电流的延时通电控制方式，讨论了实现该控制方式的可行性和最佳参数优化。
A controlling method of "late switch on" is put forward, which can reduce the impulse current of linear motor in the turnback period. The reliablity of the controlling method is discussed.
指出交流MIG电弧稳定性与换向前的电流、换向后的电压有密切关系。
The stability of the AC MIG arc is closely related to the current before the polarity reversing point and voltage after that point.
由于负向电流可以腐蚀削减铸层表面微观突起的生长高度，因此周期换向脉冲电流微电铸与单向正脉冲电流微电铸相比更易获得较好的铸层均匀性。
Because the height of micro tips on cathode surface can be eroded by the negative current, surface finishing is better in the micro-electroforming by periodic reverse pulse current than pulse current.
高速条件下，无刷直流电动机的电流换向产生严重滞后，导致转矩下降并伴随脉动。
Serious commutation lag occurs when a Brushless DC Motor (BLDCM) operates at high speeds, and this leads to torque decline with ripple.
编制了换向阶跃及线性扫描计时电位法相应的电流发生、数据采集和数据处理软件；
The softwares of the current reversal chronopotentiometry and the linear current scanning chronopotentiometry (LCSC) were designed in BASIC and 6502 Assembly Languages.
之后通过励磁电流对定子电压的调节满足并网所需要的三个条件，完成无换向器电机的并网过程。
After the voltage regulation process used excitation control, it is fitted for three synchronization conditions and can accomplish the synchronization.
内装转换开关，用于电流60A以下的电气线路中，作为电源引入开关，并可控制电动机起动变速停止换向等。
Inside installed selector switch, can be used in the circuit below60A as power lead-in switch, and the switch cab control motorstart, change speed, stop, and commutation.
交流电：周期性换向的电流，和直流电不一样。
Alternating current (AC) : Flow of electric charge that reverses periodically, unlike direct current.
交流电：周期性换向的电流，和直流电不一样。
Alternating current (AC) : Flow of electric charge that reverses periodically, unlike direct current.
应用推荐