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针对目前大型流程工业控制系统信息安全的需求,结合工业实际应用情况,研究了大型控制系统信息安全评估模型。运用模糊层次分析法和综合评价,再结合专家经验,采用改进的评估指标权重系数排序算法,获得了大型控制系统信息安全各评估指标权重系数的排序。通过对改进前和改进后的评估指标权重系数排序公式的比较,结果表明所提出方法是合理有效的。该方法可挖掘出工业控制系统信息安全性能中一系列目前未被重视的安全盲区,可为大型流程工业控制系统选择与安全管理提供有效建议和改进方向。
In view of the current information security requirements of large-scale industrial process control system, the information security assessment model of large-scale control system is studied with the actual application of industry. By using fuzzy analytic hierarchy process and comprehensive evaluation, combined with expert experience, this paper uses an improved ranking algorithm of evaluation index weight coefficients to obtain the rankings of weight coefficients for each evaluation index of information security in large control systems. Through the comparison of the formula of weight coefficient of pre-improvement and post-evaluation index, the result shows that the proposed method is reasonable and effective. This method can mine a series of blind spots that have not been valued in the information security of industrial control systems. It can provide effective suggestions and improvement direction for the selection and safety management of industrial process control systems.