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To fulfill the requirements for domestication, high real-time performance, and human-machine interaction in magnetic bearing control platforms, this study develops a domestic measurement and control system as a substitute for imported chips. The system employs the Rockchip RK3568 chip, whose 4-core Cortex-A55 processor forms a heterogeneous processing unit: three cores run the Linux system, while one core operates the RT-thread system. This configuration enables task partitioning—handling distinct computational loads—and coordinates with the underlying FPGA for AD/DA hardware control. Inter-core communication immediacy and stability are validated using RPMsg (Remote Processor Messaging) and shared memory mechanisms. Sine wave acquisition and output comparison tests demonstrate that domestic AD/DA chips can serve as viable replacements for imported counterparts. The FSPI (Flexible Serial Peripheral Interface) communication test further verifies the feasibility and reliability of using Pango Micro PGL25G FPGA as an alternative to imported devices. A LabVIEW-based upper-computer data interaction platform is implemented, establishing serial communication with the control board for remote monitoring and command execution. Experimental results show that the proposed system fulfills the 100-μs control cycle requirement for real-time algorithm execution, enhances measurement and control functionalities, and provides a technical reference for the domestication of similar industrial control systems.

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Development of the Numerical Control Platform of Magnetic Bearings Based on Domestic Chips

  • 会议论文

  • 发表日期：

    2025年

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  • Jinghui Han,
  • Yang Xu,
  • Kai Zhang

摘要

To fulfill the requirements for domestication, high real-time performance, and human-machine interaction in magnetic bearing control platforms, this study develops a domestic measurement and control system as a substitute for imported chips. The system employs the Rockchip RK3568 chip, whose 4-core Cortex-A55 processor forms a heterogeneous processing unit: three cores run the Linux system, while one core operates the RT-thread system. This configuration enables task partitioning—handling distinct computational loads—and coordinates with the underlying FPGA for AD/DA hardware control. Inter-core communication immediacy and stability are validated using RPMsg (Remote Processor Messaging) and shared memory mechanisms. Sine wave acquisition and output comparison tests demonstrate that domestic AD/DA chips can serve as viable replacements for imported counterparts. The FSPI (Flexible Serial Peripheral Interface) communication test further verifies the feasibility and reliability of using Pango Micro PGL25G FPGA as an alternative to imported devices. A LabVIEW-based upper-computer data interaction platform is implemented, establishing serial communication with the control board for remote monitoring and command execution. Experimental results show that the proposed system fulfills the 100-μs control cycle requirement for real-time algorithm execution, enhances measurement and control functionalities, and provides a technical reference for the domestication of similar industrial control systems.