A basic frame of direct current pulse width mode of servo control system is presented. Algorithm is realized by embedded digital signal processor.
提出了一种直流脉宽调制伺服控制系统的基本框架，其算法通过嵌入式数字信号处理器(DSP)来实现。
The electrodepositing method for the preparation of nano-deposit was introduced, including direct current electrodeposition, pulse electrodeposition and composite electrodeposition.
介绍了制备纳米镀层的电沉积方法，主要有直流电沉积、脉冲电沉积和复合共沉积。
Nickel iron chromium alloy with nanocrystalline were electrodeposited from chloride bath containing trivalent chromium ions under direct and pulse current.
采用直流和脉冲电沉积方式从三价铬的氯化物镀液中沉积出镍-铁-铬纳米合金镀层。
The PP-IP characteristics at low frequency high pulse current and the emission spectra at direct current have been investigated and analyzed.
研究和分析了它们在低频大电流脉冲注入下的Pp—Ip特性和直流注入下的光谱特性。
The oxidation resistance of pulse composite coating was better than that of direct current composite coating.
结果表明：脉冲复合镀层的抗高温氧化性比直流复合镀层优异；
Nickel is electrochemical micromachininged using nanosecond pulse power, millisecond pulse power and direct current power.
利用纳秒级脉冲电源、毫微秒级脉冲电源和直流电源，进行了电解加工试验。
Properties of coatings obtained by electroplating with pulse current and with periodic reverse direct current are better than that obtained with simple direct current.
脉冲电镀和直流换向电镀在某些方面比直流电镀好，但都有各自的局限性。
The quality of tungsten coating obtained by pulse current is finer than that by direct current.
脉冲给电获得的镀层比平波直流给电的质量高。
The results showed that as compared with direct current, revense pulse plating could obviously decrease porosity of nickel deposits.
结果表明，适当的脉冲参数可以明显降低镀层孔隙率。
The design principle and specific process of the pulse width servo amplifier is introduced, which is used to drive direct current motor to work.
介绍一种脉冲调宽型伺服放大器的设计原理及具体过程。
The system include pulse cathodic arc ion deposition, direct current cathodic arc ion deposition, magnetic sputtering and electronic beam evaporation technologies.
该系统集脉冲阴极弧离子镀、直流阴极弧离子镀、磁控溅射和电子束蒸发等镀膜工艺以及气体和金属离子注入于一体。
Study the pulse electroplating coating's appearance and property with the direct current plating on the same current density, temperature and electroplating time.
并且与在相同电流密度、电镀温度及电镀时间下的直流电镀试样进行外观和性能的对比研究。
Pulse electroplating coating have more powerful hardness and bonding strength than direct current plating, the amounts of crack and porosity are lower than direct current plating.
脉冲镀层硬度和结合力均高于直流镀层，镀层孔隙率、表面裂纹数量和裂纹程度都小于直流镀层。
At present, iontophoresis apparatus is a method that direct current power supply, or pulse electric current power supply.
目前，电离子导入仪主要采用的是直流电激励导入，或是脉冲电导入的方法。
A power converter circuit (3) drives a switching device by the pulse-width modulated wave for converting a direct current into the three phase alternating current.
电力变换器主电路部（3），其根据该脉冲宽度调制波对开关元件进行驱动，将直流电压转换为三相交流电压；
The invention discloses a brushless pulse direct-current motor, comprising a salient-pole stator provided with a direct-current winding and a salient-pole rotor provided with an armature-free winding.
本发明公开了一种无刷脉冲直流电动机，该机由设置着直流绕组的凸极式定子和无电枢绕组的凸极式转子组成。
The invention discloses a brushless pulse direct-current motor, comprising a salient-pole stator provided with a direct-current winding and a salient-pole rotor provided with an armature-free winding.
本发明公开了一种无刷脉冲直流电动机，该机由设置着直流绕组的凸极式定子和无电枢绕组的凸极式转子组成。
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