Research on Triple-Module Redundancy Computer with Reconfigurable Capacity

On-board computer system is the crucial component in spacecraft electronic system, and redundancy techniques can provide high reliability for on-board computer running. To ensure computer still work normally under fault condition, system architecture, principle and key technology of traditional and degraded triple-module redundancy computer were introduced. Some methods were adopted in order to reliably detect fault computer, on-board computer will work degradedly only which could not be renovated. Fault computer read current computer’s pointer and crucial data at the beginning of every course, and sent synchronization require to current computer at the end of the course, then presented a design scheme of reconfigurable triple-module redundancy space on-board computer and designed reconfigurable flow. The scheme can make the fault computer has the ability of recovery. Practice indicates that the reconfigurable scheme can effectively improve the reliability of space on-board computer system, and the paper has engineering application value for design and implementation of space on-board computer system with high reliability.