Journal of Space Science and Experiment >
Discussion on the Fault Diagnosis and Maintenance Technology of Typical Power Distribution Products in Orbit
Online published: 2025-04-22
In response to the requirements for precise positioning of on-orbit faults, fine maintenance, and intelligent process of typical power supply and distribution products in the space station, a technical solution for intelligent diagnosis and fine maintenance of on-orbit in-situ faults of typical power supply and distribution products is proposed. Discussions are conducted on the necessity, advancement, safety, and feasibility of the key technical links therein, as well as the application prospects. The overall concept of further reducing the maintenance level and on-orbit repair and reuse of Orbital Replacement Units (ORU) for board-level and component-level faults of products such as power control units and command bus units is expounded. The feasibility, complete technical routes, and implementation plans of essential key technologies for on-orbit maintenance, such as rapid intelligent fault diagnosis and precise positioning, and on-orbit fine-level welding maintenance, are explored. Regarding on-orbit maintenance supported by real-time and multi-mode interaction throughout the process based on augmented reality (AR), the disparities of existing AR technology in meeting the demands of board-level fine maintenance are examined. The significance of developing a domestically controllable and intelligent engine is proposed, along with the necessity and feasibility of key technologies such as dynamic registration technology, high-precision anchoring algorithm, flexible target recognition, and human-machine efficiency evaluation. A development plan for lightweight and highly comfortable wearable equipment is presented. A detailed analysis is carried out on the key technologies affected by differences between space and Earth, such as microgravity, in this set of solutions. The necessity, experimental methods, and implementation plans for on-orbit verification are proposed, including on-orbit welding technology, rapid and precise fault positioning technology, and AR-guided astronaut operations. This set of solutions not only possesses advantages such as low cost, multi-level, and refinement, which can effectively lower the maintenance level, optimize spare parts and supplies, and enhance system safety, but also has strong universality and can be extended to other experimental systems or more industrial fields, presenting broad application prospects.
Zhou FANG , Wei LI , Shouqing HUANG , Junbiao SHI , Jianwei NIU , Yifan LIU , Liang SU . Discussion on the Fault Diagnosis and Maintenance Technology of Typical Power Distribution Products in Orbit[J]. Journal of Space Science and Experiment, 2025 , 2(1) : 84 -96 . DOI: 10.19963/j.cnki.2097-4302.2025.01.011
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