基于STM32微控制器的高频脉宽调制器的设计
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摘要
高频脉冲电源对提高微细电解加工的工艺性有着重要的作用,而脉宽调制器经驱动电路生成IGBT控制信号决定着高频高压脉冲电源的输出频率及占空比;针对电解加工工艺的特殊性,创新性地提出基于32位微型控制器芯片STM32F103RCT6为核心的调频调占空比的方案;根据脉冲频率、占空比可调的要求,完成了脉宽调制器的软硬件设计,通过编译运行程序代码进行一系列的调频、调占空比实验并利用示波器采集两路输出的PWM波形;实验表明,自行研制的脉宽调制器能稳定地调节两路PWM控制信号的频率及占空比,验证了装置及设计的合理性。
The high-frequency pulse power supply plays an important role in improving the manufacturability of the micro electrochemical machining.The pulse width modulator generates the IGBT control signal through the drive circuit to determine the output frequency and duty cycle of the high-frequency and high-voltage pulse power source.In view of the particularity of the electrochemical machining,a innovational solution based on the 32-bit microcontroller chip STM32 F103 RCT6 as the core to regulate the frequency and the duty cycle,was proposed.According to the requirement of regulating the pulse frequency and duty cycle,it has already completed the hardware and software design of the pulse width modulator in the study.A series of regulating the frequency and the duty cycle experiments were performed by compiling and running the program code,and the PWM waveforms of the two outputs were collected by an oscilloscope.Experiments show that the self-developed pulse width modulator can stably regulate the frequency and duty cycle of the two PWM control signals,verifying the rationality of the device and design.
The high-frequency pulse power supply plays an important role in improving the manufacturability of the micro electrochemical machining.The pulse width modulator generates the IGBT control signal through the drive circuit to determine the output frequency and duty cycle of the high-frequency and high-voltage pulse power source.In view of the particularity of the electrochemical machining,a innovational solution based on the 32-bit microcontroller chip STM32 F103 RCT6 as the core to regulate the frequency and the duty cycle,was proposed.According to the requirement of regulating the pulse frequency and duty cycle,it has already completed the hardware and software design of the pulse width modulator in the study.A series of regulating the frequency and the duty cycle experiments were performed by compiling and running the program code,and the PWM waveforms of the two outputs were collected by an oscilloscope.Experiments show that the self-developed pulse width modulator can stably regulate the frequency and duty cycle of the two PWM control signals,verifying the rationality of the device and design.
引文
[1]孙立忠,王振龙,朱保国.超短脉冲微细电解加工实验研究[J].航空精密制造技术,2007,43(6):34-7.
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[4]李洪文,李元春.经纬仪伺服系统功率开关电源及控制系统设计[J].计算机测量与控制,2006,14(1):78-81.
[5]李远波,张永俊,周慧峰,等.基于DSP的软开关逆变式脉冲电源[J].电力电子技术,2009,43(11):59-60.
[6]石必利,张永俊,罗红平.带软开关和能量释放功能的脉冲电解电源的研制[J].电加工与模具,2015(3):40-2.
[7]许志永,张永俊,陈柱春.新型高频窄脉冲电解电源的研制[J].电加工与模具,2007(2):58-61.
[8]荆海霞.STM32系列微控制器的时钟系统分析[J].科技信息,2008(33):517.
[9]张淑清.嵌入式单片机STM32设计及应用技术[M].北京:国防工业出版社,2015.
[10]廉佐政,王海珍.基于STM32的PWM输出实验设计[J].实验技术与管理,2017,34(8):137-40.
[11]崔琳,朱磊,白璐.基于STM32的参数可调PWM波形发生器设计[J].信息通信,2018(1):129-31.
[12]陈龙,李远波,曹阳,等.双金属带锯条精密焊接电源的研制[J].电焊机,2018,48(4):52-56.
[2]Kim B H,Na C W,Lee Y S,et al.Micro electrochemical machining of 3D micro structure using dilute sulfuric acid[J].CIRP Annals-Manufacturing Technology,2005,54(1):191-4.
[3]王永虹,徐炜,郝立平.STM32系列ARM Cortex-M3微控制器原理与实践[M].北京:北京航空航天大学出版社,2008.
[4]李洪文,李元春.经纬仪伺服系统功率开关电源及控制系统设计[J].计算机测量与控制,2006,14(1):78-81.
[5]李远波,张永俊,周慧峰,等.基于DSP的软开关逆变式脉冲电源[J].电力电子技术,2009,43(11):59-60.
[6]石必利,张永俊,罗红平.带软开关和能量释放功能的脉冲电解电源的研制[J].电加工与模具,2015(3):40-2.
[7]许志永,张永俊,陈柱春.新型高频窄脉冲电解电源的研制[J].电加工与模具,2007(2):58-61.
[8]荆海霞.STM32系列微控制器的时钟系统分析[J].科技信息,2008(33):517.
[9]张淑清.嵌入式单片机STM32设计及应用技术[M].北京:国防工业出版社,2015.
[10]廉佐政,王海珍.基于STM32的PWM输出实验设计[J].实验技术与管理,2017,34(8):137-40.
[11]崔琳,朱磊,白璐.基于STM32的参数可调PWM波形发生器设计[J].信息通信,2018(1):129-31.
[12]陈龙,李远波,曹阳,等.双金属带锯条精密焊接电源的研制[J].电焊机,2018,48(4):52-56.