Safety control redundant system and method for fully-intelligent master control system

Abstract

The invention relates to a safety control redundant system and method for a fully-intelligent master control system, belonging to the field of industrial control. The system and the method are used for solving the problems that the accuracy of a control result is not fully taken into account and the self-recovery can not be realized after failure of a control scheme adopting a distributed control system (DCS) of a dual machine temperature backup control mode. According to the system, a repeated two-out-of-three voting manner is adopted for the acquisition and processing of data information in the system, the accuracy of system input is guaranteed through carrying out two-out-of-three voting on acquired data, the accuracy of system calculation is guaranteed through carrying out two-out-of-three voting on an operation result on control templates, a control template with the best health condition is guaranteed to serve as a master control template through dynamic master control template switching, the accuracy of the system is further improved, and thus, the aim of safety control of the system is realized. The self-recovery of a failure condition of the control template is realized through the seamless reconstruction of the control template in failure, so that the continuity and stability of work of the control system are guaranteed.

Description

technical field [0001] The invention belongs to the field of industrial control, and relates to a safety control redundancy system and a redundancy method for a fully intelligent main control system. Background technique [0002] Fault-tolerant technology is a technology that relies on the redundant utilization and careful organization of resources, and exchanges the reliability and security exponential growth technology through the linear increase of redundant resources. At present, many people have paid attention to and studied the redundant design of fault-tolerant computers, and obtained many research results, such as: dual-computer cold backup, dual-computer warm backup, dual-computer hot backup and dual-computer comparison system. However, the above-mentioned dual-machine (dual-mode) redundant computer systems all have the disadvantage of single-point failure, which is difficult to overcome. When a failure occurs, the system will be interrupted. The real-time performan...

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Problems solved by technology

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to solve a kind of control scheme of the distributed control system (DCS) that adopts dual-computer warm backup control mode not to fully consider the accuracy of control results, and after a failure occurs The problem of self-recovery cannot be realized, and a safety control redundancy system and redundancy method for a fully intelligent main control system are proposed

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