基于变权重理论的高压电缆施工作业3D仿真培训系统可信度评估

摘要

仿真可信度是评估仿真培训系统成功与否的重要指标.首先,研究高压电缆施工作业3D仿真培训系统可信度的评估指标,采用梯形云描述可信度评估过程中的不确定性,实现定性概念和定量计算上的转换,和评估指标隶属度的计算;其次,采用改进的模糊层次分析法计算评估指标的常权重,针对可信度评估中极个别指标严重失真,综合评价无法灵敏做出反应的问题,根据系统可信度评估的自身属性构造惩罚型状态变权函数,使各指标的权重随着可信度评估结果的变化而重新分配,失真模块的权重也能随之增大;最后,采用模糊加权算子计算可信度评估结果.广东某地区高压电缆施工作业3D仿真培训系统可信度评估的算例分析结果表明:采用变权重可以有利于系统开发人员以及使用人员快速寻找失真模块,并改善相应模块,提高开发高压电缆施工作业3D仿真培训系统的成效.%Simulation credibility is an important index to assess the training system simulation success.First,based on the evaluation index selection of 3D simulation training system for HV cable construction,the ladder-type cloud theo-ry was used to describe the uncertainty of the assessment process in this paper,which could achieve the conversion of qualitative concepts and quantitative calculation,and calculate the membership degree of evaluation index.Second,the improved fuzzy AHP method(IFAHP)was proposed to calculate the constant weight of the evaluating index.Because the comprehensive evaluation could not respond sensitively to the serious distortion of the individual index in the reliability evaluation,a punitive variable weight vector function was constructed according to the self-attribute of the 3D simula-tion training system.It could result that the weights of each indicators were redistributed with the change of credibili-ty assessment result,and the weight of distortion module was also increased.Finally,the reliability evaluation results of simulation training system were calculated by fuzzy weighted operator.Taking the training simulation system in a certain area of Guangdong as an example,the results showed that the distortion module could be find quickly by using the variable weight,and the corresponding module could be improved.And the success rate of the high-voltage cable construction operation 3D simulation training system was greatly improved.