复杂系统基于定性关系的建模与诊断推理研究

为克服复杂系统定量建模与诊断过程中存在的计算复杂、实时性和鲁棒性不强等缺陷,提出了基于定性关系模型的建模和诊断推理方法,研究并解决了其中的定性建模技术、定性推理方法及诊断机制等问题,并基于某空间飞行器推进系统进行了建模与诊断推理实例分析。验证结果表明,该方法具有建模方便、诊断快速等特点,为建立具有良好鲁棒性、实时性和实用性的诊断推理系统,提高复杂系统的可靠性提供了一条新的途径。

Research of modeling and diagnosis reasoning for complex systems based on qualitative relation

A qualitative-relation-based modeling and reasoning method for complex systems is proposed in this paper to avoid the computational complexity,poor robustness,and bad real-time ability of the quantitative model-based methods,which includes the qualitative modeling,reasoning method and the diagnosis mechanism.Test result with a spacecraft propulsion system shows that,the method proposed provides a novel approach to build a robust,real-time and practicable diagnosis reasoning system which can improve the reliability of complex systems effectively.