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In order to meet the high precision requirement of the beam of the High Intensity Heavy Ion Accelerator Facility (HIAF) project at the Institute of Modern Physics (IMP), Chinese Academy of Sciences, a new method of improving the PWM (pulse width modulation) precision of the magnet power supplies, which uses the dynamic phase shift of the phase locked loop (PLL), has been employed. The wave measurement results which are obtained by adopting the new method demonstrate that the adjustment precision of the PWM is picosecond, while the accuracy is nanosecond obtained by using the existing common methods. The new method has laid a solid foundation for improving the beam accuracy of the HIAF project. Details of the new method will be presented in the paper.

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A Method of Improving PWM Precision Using Dynamic Phase Shift with PLL

  • 会议论文

  • 发表日期：

    2025年

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  • Zhihui Zhang,
  • Yuzhen Huang,
  • Haozhe Yang,
  • Daqing Gao

摘要

In order to meet the high precision requirement of the beam of the High Intensity Heavy Ion Accelerator Facility (HIAF) project at the Institute of Modern Physics (IMP), Chinese Academy of Sciences, a new method of improving the PWM (pulse width modulation) precision of the magnet power supplies, which uses the dynamic phase shift of the phase locked loop (PLL), has been employed. The wave measurement results which are obtained by adopting the new method demonstrate that the adjustment precision of the PWM is picosecond, while the accuracy is nanosecond obtained by using the existing common methods. The new method has laid a solid foundation for improving the beam accuracy of the HIAF project. Details of the new method will be presented in the paper.