工作流系统模型的建立及其可靠性的评价  

MODELING WORKFLOW AND EVALUATING ITS RELIABILITY

作　　者：林晖[1] 赵泽超[1] 张优云[1] 

机构地区：[1]西安交通大学轴承研究所和机械电子信息技术研究所,西安710049

出　　处：《机械工程学报》2001年第2期48-54,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目 !(5 9990 172 )

摘　　要：复杂产品的设计、制造及销售是高度复杂的工作流程 ,且流程具有极大的不确定性 ,这就要求工作流管理系统有较大的柔性。动态的、分布式的以及智能化的工作流是支持复杂流程管理的最佳选择 ,但这样的工作流却引起系统的不确定性 ,因此 ,必须给出工作流的可靠性评价。建立了工作流结构的数学模型 ;提供了计算系统资源耗费及流程不确定性的方法 ;对包含‘环’结构的系统 ,该法实现对‘环’的提取 ,以便于资源耗费的计算 ;随后给出了可靠性评价方案 ;对一工程实例进行了详细的分析。Product with complicated forms has perplexing workflow in design,manufacture and market analysis and its workflow has high uncertain specialty,hence a workflow management system (WMSs) with more flexibility will be required.This implies that a workflow having dynamic,distributed and intellectualized characteristic be introduced into,but uncertain specialty will occur in system,thereby evaluating its reliability is an important aspect in workflow schema.An approach for analyzing workflow,is presented,modeling relationships among tasks in workflow;providing a method for calculating resource consumption and uncertain specialty of flows is provided;a method for detecting cycle included in the system is be given;subsequently,a approach for evaluating system reliability is be drawn down,A case study,relating the experimental platform, will exemplify the introduced approach.

关 键 词：工作流 资源耗费 可靠性 流程结构模型 轴承转子实验台 

分 类 号：TH133.33[机械工程—机械制造及自动化] TB114.3[理学—概率论与数理统计]