为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Dec...为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Decision Making Trial and Evaluation Laboratory,DEMATEL)分析法的叠加模型(STAMP-DEMATEL),推演关键致因及其作用关系,搭建致因分层控制结构,系统分析安全约束管控策略。研究揭示了监督检查计划落实、作业行为管理、关键技术水平等6个关键致因及监督检查计划落实-关键技术水平、作业行为管理-安全操作规程执行等5对关键作用关系,涉及政府与企业、企业内部两类主体关系范畴,管-人、管-物两类要素关系。对关键作用关系进行致因、要素、主体层面安全约束的系统分析,可为整个安全生产系统平衡运行提供决策支持,在支持系统风险管理、监管资源分配、风险预警等方面发挥重要作用。展开更多
安全生产事故往往由多组织交互、多因素耦合造成,事故原因涉及多个组织。为预防和遏制多组织生产安全事故的发生,基于系统理论事故建模与过程模型(Systems-Theory Accident Modeling and Process,STAMP)、24Model,构建一种用于多组织事...安全生产事故往往由多组织交互、多因素耦合造成,事故原因涉及多个组织。为预防和遏制多组织生产安全事故的发生,基于系统理论事故建模与过程模型(Systems-Theory Accident Modeling and Process,STAMP)、24Model,构建一种用于多组织事故分析的方法,并以青岛石油爆炸事故为例进行事故原因分析。结果显示:STAMP-24Model可以分组织,分层次且有效、全面、详细地分析涉及多个组织的事故原因,探究多组织之间的交互关系;对事故进行动态演化分析,可得到各组织不安全动作耦合关系与形成的事故失效链及管控失效路径,进而为预防多组织事故提供思路和参考。展开更多
In order to improve the process precision of an XY laser annealing table, a geometric error modeling, and an identification and compensation method were proposed. Based on multi-body system theory, a geometric error m...In order to improve the process precision of an XY laser annealing table, a geometric error modeling, and an identification and compensation method were proposed. Based on multi-body system theory, a geometric error model for the laser annealing table was established. It supports the identification of 7 geometric errors affecting the annealing accuracy. An original identification method was presented to recognize these geometric errors. Positioning errors of 5 lines in the workspace were measured by a laser interferometer, and the 7 geometric errors were identified by the proposed algorithm. Finally, a software-based error compensation method was adopted, and a compensation mechanism was developed in a postprocessor based on LabVIEW. The identified geometric errors can be compensated by converting ideal NC codes to actual NC codes. A validation experiment has been conducted on the laser annealing table, and the results indicate that positioning errors of two validation lines decreased from ±37 μm and ±33 μm to ±5 μm and ±4.5 μm, respectively. The geometric error modeling, identification and compensation method presented in this work can be straightforwardly extended to any configurations of 2-dimensional worktable.展开更多
文摘为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Decision Making Trial and Evaluation Laboratory,DEMATEL)分析法的叠加模型(STAMP-DEMATEL),推演关键致因及其作用关系,搭建致因分层控制结构,系统分析安全约束管控策略。研究揭示了监督检查计划落实、作业行为管理、关键技术水平等6个关键致因及监督检查计划落实-关键技术水平、作业行为管理-安全操作规程执行等5对关键作用关系,涉及政府与企业、企业内部两类主体关系范畴,管-人、管-物两类要素关系。对关键作用关系进行致因、要素、主体层面安全约束的系统分析,可为整个安全生产系统平衡运行提供决策支持,在支持系统风险管理、监管资源分配、风险预警等方面发挥重要作用。
文摘安全生产事故往往由多组织交互、多因素耦合造成,事故原因涉及多个组织。为预防和遏制多组织生产安全事故的发生,基于系统理论事故建模与过程模型(Systems-Theory Accident Modeling and Process,STAMP)、24Model,构建一种用于多组织事故分析的方法,并以青岛石油爆炸事故为例进行事故原因分析。结果显示:STAMP-24Model可以分组织,分层次且有效、全面、详细地分析涉及多个组织的事故原因,探究多组织之间的交互关系;对事故进行动态演化分析,可得到各组织不安全动作耦合关系与形成的事故失效链及管控失效路径,进而为预防多组织事故提供思路和参考。
基金Projects(2012ZX04010-011,2009ZX02037-02) supported by the Key National Science and Technology Project of China
文摘In order to improve the process precision of an XY laser annealing table, a geometric error modeling, and an identification and compensation method were proposed. Based on multi-body system theory, a geometric error model for the laser annealing table was established. It supports the identification of 7 geometric errors affecting the annealing accuracy. An original identification method was presented to recognize these geometric errors. Positioning errors of 5 lines in the workspace were measured by a laser interferometer, and the 7 geometric errors were identified by the proposed algorithm. Finally, a software-based error compensation method was adopted, and a compensation mechanism was developed in a postprocessor based on LabVIEW. The identified geometric errors can be compensated by converting ideal NC codes to actual NC codes. A validation experiment has been conducted on the laser annealing table, and the results indicate that positioning errors of two validation lines decreased from ±37 μm and ±33 μm to ±5 μm and ±4.5 μm, respectively. The geometric error modeling, identification and compensation method presented in this work can be straightforwardly extended to any configurations of 2-dimensional worktable.
