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http://dx.doi.org/10.13067/JKIECS.2011.6.3.397

A Study on Dual System for Fault Tolerance of PLC  

Ko, Jae-Hong (한국폴리텍V대학 광주캠퍼스 전기제어과)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.6, no.3, 2011 , pp. 397-404 More about this Journal
Abstract
In this research, wish to suggest method to embody system that can accommodate defect of PLC and find actual propriety. Defect permission control system minimizes production damage because enables repair and checking without discontinuance and improve believability about whole system. Propose duplexing of system to embody this fault tolerant system. Therefore, composed control system that can permit defect or breakdown duplexings of various module proposing this system, and confirms to simulation and actuality kiln of defect permission control system through an application experiment, and compares for mean time between defect by estimate and defect special quality and system configuration of failure(failure) to improve believability of PLC control system together. In proposed system expression method and system mode and relation with operation mode, error discovery mode and switching tube of duplexing mode, and PLC's central processing unit of node study algorithm about master-standby conversion driving and continuous operation of 2 channels method that have 2 that is not one and deduced continuous operation method and result about defect permission in this algorithm and applies this result to actuality kiln control system and confirms continuous operation about PLC defect permission.
Keywords
Dual System; Fault Tolerance; PLC; Simatic;
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