基于THERP可变功能机械功能转换过程评价  

Evaluation of function conversion process of adaptable-function mechanical product based on THERP

作　　者：王圣辉 贺华波[1,2] WANG Shenghui;HE Huabo(Faculty of Mechanical Engineering&Mechanics,Ningbo University,Ningbo 315211,China;Zhejiang Provincial Key Laboratory of Part Rolling Technology,Ningbo 315211,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2023年第3期50-56,共7页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(51375246).

摘　　要：可变功能机械额功能转换过程设计是该类产品设计开发的一个重要环节,其设计结果不仅决定产品功能的实现与否,还会对诸如安全性、经济性等非技术类问题造成影响,目前还缺少专门针对此过程设计解的分析及评估方法.为解决此问题,结合人失误概率预测技术(Technique for Human Error Rate Prediction,THERP)模型及风险概率与经济性安全评价对功能转换过程进行定量分析.依据THERP模型将功能转换过程划分为一系列子任务,并建立功能转换过程二叉树,同时按照功能转换过程的特点对二叉树进行简化,接着评估各失误路径的发生概率及失误严重度,并将失误严重度量化为经济损失,最后得到功能转换过程的风险值.同时通过角磨机向电锯功能转换的过程定量分析,验证了该方法的可行性.The function conversion process of the adaptable-function mechanical product is one of major tasks in the design and development of this specific type of product.The design solution for the function conversion process not only determines the implementation of product functions,but also has repercussions on non-technical issues such as safety and economy.Currently,there still lacks particular method for the analysis and evaluation of the relevant design solutions.To address this problem,this paper carries out quantitative analysis of the function conversion process by integrating the THERP(Technique for Human Error Rate Prediction)model,the risk probability calculation and the economic safety evaluation.With THERP model,the function conversion process is divided into a series of subtasks,and its binary tree is established.and meanwhile simplified by taking the mechanical characteristics of function conversion process into account.Subsequently,the occurrence probability and error severity of each error path are evaluated,and the error severity is quantified as economic loss.Finally,the risk value of the entire task is obtained that is used to evaluate the function conversion process.A case study of the function conversion process from angle grinder to chainsaw is also presented to verify the feasibility of the proposed method.

关 键 词：可变功能 人失误概率预测技术 二叉树 功能转换 

分 类 号：TH122[机械工程—机械设计及理论]