一种新型窄脉宽脉冲电源的设计与实现  

Design and Implementation of a Novel Narrow Pulse Power Supply

作　　者：林伟[1] 张春林[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2012年第2期140-142,155,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：国家自然科学基金资助项目(30627001);湖北省自然科学基金资助项目(20101j0170)

摘　　要：在微细电化学加工中,脉冲电源的脉冲宽度及占空比的参数大小对加工精度有着重要的影响。斩波方式在传统的电化学加工脉冲电源中普遍运用,但其对于开关器件的通断速度及驱动能力要求较高,导致传统脉冲电源很难达到超窄脉宽要求。针对这一问题,利用DDS电路产生正弦波信号,结合脉冲调理电路,设计了一种用于电化学加工的新型窄脉宽脉冲电源。实践结果表明:该窄脉宽脉冲电源的脉宽最低可达10 ns,占空比可调,输出信号稳定,可以达到超窄脉宽要求,并成功应用于光学码板的加工中。The pulse width and pulse duty of the pulse power supply have important impact on the precision of the electrochemical machining.Chopper is often used in the traditional pulse power supply,and it also has high demands for switching speed and driving capability of switching devices.Ideal ultra narrow pulse width is difficult to be achieved by traditional chopper way.For the problems of traditional pulse power,sinusoid signal was generated by DDS circuit.And combined with pulse shaping circuit,a novel pulse power supply with the narrow pulse width was designed.The experiential results show that its minimum pulse width is 10 ns,its pulse duty can be adjusted,the output signal is stable,and it can meet for ultra narrow pulse width.It has been used in the processing of optical codes board.

关 键 词：电化学加工 脉冲电源 窄脉宽 DDS技术 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]