石油化工SDG故障诊断仿真试验系统

基于SDG深层知识模型的推理方法是一种完备的揭示系统故障的有效方法，石油化工的SDG故障诊断方法也是当前研究的热点问题。系统仿真技术在故障诊断系统中发挥了特殊的作用，建立用于故障诊断的仿真试验系统是必要的。本文给出了该系统的硬件和软件结构，讨论了其中的关键技术。该试验系统可用于辅助建立SDG故障诊断模型、阈值修正、案例试验、模型验证及模型简化等，并可依据国际标准对诊断系统进行系统安全整体性要求测试，包括软件可靠性试验和硬件可靠性试验。

SDG Fault Diagnosis Simulation System for Petrochemical Process

The inference based on SDG is a self-contained method to effectively diagnosis system failures, and it has being a research focus in safety field. Since systemic simulation technology has played a significant role in fault diagnosis, creating a trial system based on simulation will be a good foundation to carry out related research. This article shows hardware and software structure of such system that we have developed for the aim, and deeply discusses key technology involved. The system can be used to assist engineers to create SDG diagnosis model, modify threshold value and so on. Besides, we put it through systematic integrated test according to global standards, including software and hardware reliability.