基于广义随机Petri网的维护系统仿真与应用  

RESEARCH ON GENERAL STOCHASTIC PETRI NET BASED MAINTENANCE SYSTEM SIMULATION AND OPTIMIZATION

作　　者：刘坚[1] 于德介[1] 李蓉[1] 李德刚[2] 

机构地区：[1]湖南大学机械与汽车工程学院,长沙410082 [2]中国石油化工股份有限公司巴陵分公司,岳阳414003

出　　处：《机械工程学报》2005年第10期164-169,共6页Journal of Mechanical Engineering

基　　金：湖南省制造业信息化示范工程基金(Hnmie-A-070)湖南省科技攻关基金(03GKY3057)湖南大学校基金资助项目。

摘　　要：针对企业设备维护工作的经济性优化问题提出了基于流程建模与仿真的维护系统优化方法。该方法以维护系统的广义随机Petri网工作流建模为基础,强调基于维护记录的模型变迁时延的假设与验证,并针对解析法的局限性将流程仿真技术引入维护系统的性能求解中,在选定的Artifex工具平台上实现了维护系统的长周期真实模拟。通过对不同资源条件下仿真结果的分析,明确维护资源配置与维护系统性能间的对应关系,为维护系统的改进提供指导。方法的正确性和可行性在企业的实际应用中得到了验证。Aiming at the economic optimization of plant maintenance, a maintenance system optimize method based on workflow modeling and simulation is proposed, in which the maintenance system is described with a general stochastic petri net workflow model and the distribution hypothesis of transition time delay in the model is tested according to maintenance record. To overcome the limitations of analytical method the workflow simulation technology is introduced in performance computation of maintenance system, and long-time operation of the maintenance system is simulated with the aid of selective Artifex software. Relation between maintenance resource allocation and maintenance system performance is ascertained by analysis of simulation data on different resource conditions, which can be used to guide the improvement of the plant maintenance. Validity and feasibility of the method are verified by the successful application in a petrochemical company.

关 键 词：维护系统 工作流建模 广义随机Petfi网 流程仿真 系统优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TH17[自动化与计算机技术—计算机科学与技术]