Research on Digital Pulse Electric Spark Deposition Power Supply Based on DDS
In electric discharge deposition machining,the discharge parameters of the pulse power supply have an important impact on the deposition effect and machining efficiency.Aiming at the problem of poor controllability of discharge parameters in traditional electric spark deposition power supplies,a digital pulse electric spark deposition power supply was designed based on the characteristics of fully digital modulation and stable output using Direct Digital Frequency Synthesis(DDS)technology.Using a microcontroller and DDS chip as the core to control the output of processing pulses in the chopper circuit can achieve precise control of discharge voltage,frequency and other parameters,as well as wide range stepless adjustment.After experimental testing,the output signal of the control and drive module is stable and accurate,with a frequency error of within 1 Hz.The discharge voltage waveform has good controllability and meets the requirements of electric discharge deposition machining.It can be used for basic research of electric discharge deposition machining.
electro-spark depositionDDS technologypulse power supplycontrollability
万方数据
维普
