Multimode redundant bus fault-tolerant architecture in hot backup computer and control method thereof

Abstract

The invention relates to a multimode redundant bus fault-tolerant architecture in a hot backup computer and a control method thereof, and belongs to the technical field of communication. According tospaceport guidance navigation control subsystem characteristics, the multimode redundant bus fault-tolerant architecture comprising M buses in the hot backup computer is designed. According to a taskdemand, a plurality of sensors and execution mechanisms are reasonably distributed on the M buses. Each single machine of a spaceport guidance navigation control computer is designed with N bus control circuits which are respectively connected with N buses in the M buses. Under normal condition, each single machine controls one bus, namely, one bus controller of each single machine works in a maincontrol mode, and other N-1 bus controllers serve as redundant backups to work in a monitor / sleep mode. By adoption of the multimode redundant bus fault-tolerant architecture in the hot backup computer and the control method thereof, the performance requirements, for long-term high reliability and high data throughout bandwidth of buses, of complex long-life guidance navigation control subsystemsare satisfied.

Description

technical field [0001] The invention relates to a multi-mode redundant bus fault-tolerant architecture and a control method thereof in a hot backup computer, and is especially suitable for a multi-mode redundant hot backup computer system with a large amount of bus data and long-term and high-reliability task requirements, and belongs to communication technology field. Background technique [0002] Traditional hot backup computers use a single bus to communicate with other sensors, actuators, components, and other subsystems. This bus has the advantages of simple structure, low cost, and easy implementation, but it has three significant disadvantages: [0003] 1. When the control cycle is short and the amount of bus data to be transmitted in each control cycle is large, the single-bus method cannot meet the demand. [0004] 2. In the single bus structure, if the bus fails, the function of the guidance and navigation control subsystem will fail, which cannot meet the long-te...

AI Technical Summary

Problems solved by technology

[0003] 1. When the control cycle is short and the amount of bus data to be transmitted in each control cycle is large, the single-bus method cannot meet the demand

[0004] 2. In the single bus structure, if the bus fails, the function of the guidance and navigation control subsystem will fail, which cannot meet the long-term high reliability performance requirements

[0005] 3. In a single bus structure, in addition to bus failures, bus controller failures will also cause bus communication failures, resulting in stand-alone failure and system degradation

If a single-bus structure is adopted, the advantages of each stand-alone division of labor in the Byzantine fault-tolerant system to obtain heterogeneous data at the same time cannot be brought into play, resulting in reduced system performance

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