Maintainable control unit architecture for spacecraft

By using a combination of high-performance CPU processors, antifuse PROM memory, and large-capacity FLASH/SRAM memory in the spacecraft control unit, the reliability and maintainability issues of the high-orbit spacecraft control unit were solved, enabling stable operation and maintenance of on-orbit software and improving the long-term on-orbit operation capability of the spacecraft.

CN122111325APending Publication Date: 2026-05-29SHANGHAI INST OF SPACE PROPULSION
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Patent Information

Application Number
CN202610005536.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-05
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient to meet the high reliability and maintainability requirements of control units for high-orbit spacecraft, especially the difficulty in maintaining on-orbit software, which affects the long-term stable operation and safety of spacecraft.

Method used

It employs a high-performance CPU processor, an externally expandable one-time programmable anti-fuse PROM memory for the boot program, an externally expanded capacity FLASH memory for the application software, and performs a 3-out-of-2 comparison and error correction in the SRAM memory to ensure the reliability and maintainability of the software.

Benefits of technology

It achieves high reliability and maintainability of spacecraft control units, ensures the stability and reliability of software operation in orbit, supports on-orbit software maintenance, and extends the life and safety of spacecraft.

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Abstract

The invention provides a maintainable control unit architecture for a spacecraft. The maintainable control unit architecture comprises a hardware architecture and a software operation architecture, the method comprises the following steps: selecting a high-performance CPU (Central Processing Unit), and externally expanding any one or more of the following devices: a one-time programming anti-fuse PROM (Programmable Read Only Memory) type memory for storing a bootstrap program; the high-capacity FLASH type memory is used for storing application software; and a high-capacity SRAM (Static Random Access Memory) is used for software operation. The control unit architecture for the spacecraft is high in reliability and maintainable, the requirements of the long-term on-orbit spacecraft for high reliability and maintainability of the control unit can be met, and high-reliability storage and operation of a guide program are guaranteed.
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