Degradable triple-modular redundancy computer system based on software synchronization

Abstract

The invention discloses a degradable triple-modular redundancy computer system based on software synchronization, relates to a triple-modular redundancy computer control system, and solves the problem that the conventional triple-modular redundancy system is complicated due to addition of an arbitration module. The degradable triple-modular redundancy computer system consists of three same control computers, communication buses, high-speed communication buses and a power management module, wherein the synchronization information transfer and data exchange of the control computers are finished through the communication buses which are connected two by two; the control computers vote for sensor data and control operation results by using a 2-out-of-3 voting algorithm; high-frequency heartbeat monitoring signals of the computers are transferred by interconnecting the high-speed communication buses two by two, and real-time state mutual monitoring of the control computers is realized; the three control computers operate degradation programs, so the degradation operation of a redundancy system is realized; and the three control computers operate reconstruction programs, so the reconstruction operation of the redundancy system is realized. The arbitration module is not required to be added.

Description

technical field [0001] The invention relates to a triple-mode redundant computer control system. Background technique [0002] Computer control technology has been widely used in various fields such as aerospace, aviation and ocean engineering. Due to the wide application of computers, its reliability has become a very prominent problem. There are two effective methods to improve the reliability of computers. One is to avoid mistakes, which requires strict screening of computer components, perfect design, improvement of manufacturing process, and strengthening of quality management. But even for such a computer system, because of various environmental stresses in its working environment, such as humidity, temperature, electromagnetic interference, strong vibration, etc., failures cannot be avoided. This requires the computer to have fault tolerance. The so-called fault tolerance means that in the case of one or several hardware or software faults or errors, the computer sys...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of degradable three-mode redundant computer system based on software synchronization, to solve the existing three-mode redundant system to complete the work of two-out-of-three voting, but also to maintain the synchronization and synchronization of the three computers Dealing with the work of recovering a faulty computer often requires additional hardware settings, and the system is more complicated

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