发动机装配线人工工位的人因时变可靠性建模

Human Time Variant Reliability Modeling of Manual Station on Engine Assembly Line

摘要:

为了描述发动机装配线的人工工位随工作日及作业次数变化的人因可靠性，提出一种考虑最短认知过程、认知疲劳及最短生理操作过程的人因时变可靠性模型.基于学习遗忘与疲劳恢复理论，考虑最短认知过程和认知疲劳给出认知时间的表达方式，结合最短生理操作过程对作业时间进行描述，求得疲劳失误率，依据节拍及HCR(human cognitive reliability)方法确定认知失误率.通过计算由认知及疲劳引起的时间变化量得到失误权重，构建人工工位的人因时变可靠性模型.以实例验证了模型的有效性，为实际生产中的人因可靠性计算及产能预测提供依据.

关键词:装配线; 人工工位; 人因时变可靠性建模; 认知; 疲劳

Abstract:

To quantitatively describe the human reliability of manual station on engine assembly line within different working days and operation times, a model was proposed considering the shortest cognitive process, cognitive fatigue, and the shortest operation process. Based on the learningforgetting and fatiguerecovery theory, the cognitive time was developed with the shortest cognitive process and cognitive fatigue, while the operation time was developed with the shortest operation process. According to the cognitive time and operation time, fatigue failure rate was calculated and cognitive failure rate was introduced with the HCR(human cognitive reliability) method. After obtaining the failure coefficient according to their time variance, a human time variant reliability model was built. A case study verified the feasibility of the model. The result can be used in human reliability evaluation and product prediction.

Key words:assembly line; manual station; human time variant reliability modeling; cognitive; fatigue