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多目标飞机和旅客恢复分阶段启发式算法 被引量:4
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作者 李晓岚 乐美龙 《计算机应用研究》 CSCD 北大核心 2014年第8期2270-2274,共5页
为了恢复非正常航班,同时降低成本和提高恢复效率,为航空公司进一步提升利润空间,从整体角度考虑建立了飞机和旅客流综合恢复模型。模型不仅以最小化显性恢复成本为目标,并且从旅客心理角度出发,以隐性旅客失望溢出成本最小化为第二目... 为了恢复非正常航班,同时降低成本和提高恢复效率,为航空公司进一步提升利润空间,从整体角度考虑建立了飞机和旅客流综合恢复模型。模型不仅以最小化显性恢复成本为目标,并且从旅客心理角度出发,以隐性旅客失望溢出成本最小化为第二目标。该多目标规划模型考虑多机型、航班串指派、航班序列时间限制、飞机定检、旅客OD对、旅客行程安排等条件。针对模型特点设计分阶段启发式算法,分为构建初始解、修复可行解和改善优化解三个阶段,通过不断迭代寻求较优解。引用上海航空公司数据进行算例测试,并设计两种不同干扰情景有针对性地加以恢复。结果和手动顺延方案相比,恢复成本分别降低20.482%、39.852%,恢复效率分别提高33.33%、51.22%,表明该算法和模型能有效整合飞机和旅客两种资源,为航空公司自动化恢复系统服务。 展开更多
关键词 非正常航班 飞机和旅客 多目标规划 综合恢复模型 分阶段启发式算法 自动化恢复系统
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Fault Handling in PLC-Based Industry 4.0 Automated Production Systems as a Basis for Restart and Self-Configuration and Its Evaluation 被引量:1
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作者 Birgit Vogel-Heuser Susanne Rösch +3 位作者 Juliane Fischer Thomas Simon Sebastian Ulewicz Jens Folmer 《Journal of Software Engineering and Applications》 2016年第1期1-43,共43页
Industry 4.0 and Cyber Physical Production Systems (CPPS) are often discussed and partially already sold. One important feature of CPPS is fault tolerance and as a consequence self-configuration and restart to increas... Industry 4.0 and Cyber Physical Production Systems (CPPS) are often discussed and partially already sold. One important feature of CPPS is fault tolerance and as a consequence self-configuration and restart to increase Overall Equipment Effectiveness. To understand this challenge at first the state of the art of fault handling in industrial automated production systems (aPS) is discussed as a result of a case study analysis in eight companies developing aPS. In the next step, metrics to evaluate the concept of self-configuration and restart for aPS focusing on real-time capabilities, fault coverage and effort to increase fault coverage are proposed. Finally, two different lab size case studies prove the applicability of the concepts of self-configuration, restart and the proposed metrics. 展开更多
关键词 Industry 4.0 automated Production system OEE Metrics recovery RESTART Fault Handling
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