Relay ladder logic diagnosis

A Guasch , R Milne , R Sarrate
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引用次数: 3

Abstract

A wide variety of industrial systems are controlled and supervised by programmable logic controllers (PLCs). Although the PLC is particularly well adapted to problems requiring sequential control or the verification of interlocks prior to further actions taking place, they are very poor at supporting diagnostics when problems occur. On the other hand, the PLC does contain valuable information to assist with diagnosis though, it is just very difficult for an engineer or operator to understand it directly. This paper describes the automatic development of a troubleshooting system which can be build using the precise and deterministic knowledge embedded within the PLC and extending it with heuristic knowledge.

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继电器梯形逻辑诊断
各种各样的工业系统是由可编程逻辑控制器(plc)控制和监督的。尽管PLC特别适合于需要顺序控制或在进一步行动发生之前验证联锁的问题,但当问题发生时,它们在支持诊断方面非常差。另一方面,PLC确实包含有价值的信息来协助诊断,但对于工程师或操作员来说,直接理解它非常困难。本文介绍了一个故障排除系统的自动开发,该系统可以利用PLC内嵌的精确和确定性知识,并用启发式知识对其进行扩展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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