人机系统警觉性与安全性的非线性演化研究

Study on Nonlinear Dynamic Evolutionary Patterns of Vigilance and Safety in Human-Machine System

对系统人员警觉性与系统安全性两大指标的非线性关系进行理论分析,根据人机系统警觉性和安全性变量之间的非线性函数关系,提出了相应的非线性动态演化模型。通过将警觉性与安全性相图分为四个区域:安全有保障区、安全形势恶化区、安全形势振荡区和安全水平提升区,分析了人机系统的警觉与安全相互作用的演化模式,论述了在不同系统参数条件下,安全形势振荡区表现出的三种不同振荡类型:渐进稳定、周期振荡和振荡恶化。同时对相图的演化趋势进行了定性分析,运用警觉性与安全性离散化量表进行了演化特征的模糊推断。

Based on theoretical analysis of two indicators of human vigilance and safety, this paper proposed the nonlinear dynamic evolutionary model according to the function relationship between vigilance and safety in human-machine system. The paper used phase diagram to analyze evolutionary patterns of interaction of vigilance and safety qualitatively, and the phase diagram was divided into four regions, stable, deteriorating, oscillating and improving. At the same time, the paper analyzed three types of oscillating styles in the oscillating region, gradually stable, cycle oscillating and oscillating deterioration. Based on qualitative analysis of evolutionary patterns of phase diagram, the paper used discrete scale of vigilance and safety to deduce the relevant patterns.