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Lectures on Numerical Methods in Bifurcation Problems
Methods for Finding Zeros in Polynomials
Lectures on Stochastic Flows and Applications
Educational Psychology by Edward L. Thorndike
The Last Days of Tolstoy by V. G. Chertkov
Globalization and Responsibility
Lectures on Siegel Modular Forms and Representation by Quadratic Forms
Lectures on Topics In One-Parameter Bifurcation Problems
History of the Incas by Pedro Sarmiento de Gamboa
Linear Algebra: Theorems and Applications
Lectures on Stochastic Differential Equations and Malliavin Calculus
A Short Biographical Dictionary of English Literature
Lectures on Sieve Methods and Prime Number Theory
Dollars and Sense by William Crosbie Hunter
The Theory of the Theatre by Clayton Hamilton
The Mathematics of Investment
Occupiers of Wall Street: Losers or Game Changers
The Solution of the Pyramid Problem
Lectures on Moduli of Curves
Walden by Henry David Thoreau
Methods for Finding Zeros in Polynomials
Lectures on Stochastic Flows and Applications
Educational Psychology by Edward L. Thorndike
The Last Days of Tolstoy by V. G. Chertkov
Globalization and Responsibility
Lectures on Siegel Modular Forms and Representation by Quadratic Forms
Lectures on Topics In One-Parameter Bifurcation Problems
History of the Incas by Pedro Sarmiento de Gamboa
Linear Algebra: Theorems and Applications
Lectures on Stochastic Differential Equations and Malliavin Calculus
A Short Biographical Dictionary of English Literature
Lectures on Sieve Methods and Prime Number Theory
Dollars and Sense by William Crosbie Hunter
The Theory of the Theatre by Clayton Hamilton
The Mathematics of Investment
Occupiers of Wall Street: Losers or Game Changers
The Solution of the Pyramid Problem
Lectures on Moduli of Curves
Walden by Henry David Thoreau
Useful Links
上海交通大学工业工程引论
Posted on 2010-04-28
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排程与车间作业计划 甘特图 车间作业排序和计划的关系 作业排序的优先规则 作业排序的优先规则 N个作业单台工作中心的排序 方案一:FCFS规则 方案二:SOT规则 方案三:Ddate规则 方案四:LCFS规则 方案五:随机 方案六:STR规则 优先调度规则比较 N个作业两台工作中心排序 MRP习题 * * Sequencing and Shop Floor Scheduling Management 2001/2/21 机械工程学院 工业工程系 2001/2/21 车间作业控制的内容和意义 车间作业控制(shop floor control) 目的: — 控制生产作业在执行中不偏离MPS/MRP计划; — 出现偏离时,采取措施,纠正偏差,若无法纠正,则反馈到计划层; — 报告生产作业执行结果。 内容: — 控制加工设备完好,人员出勤; — 控制加工件在工作中心加工按排定的工序加工; —保持物流稳定, 控制投入和产出的工作量; — 控制加工成本,结清定单,完成库存事务处理。 2001/2/21 任务下达流程据概要 审查订单 确认工具物料和能力需求 确定工具物料能力可用性 ? 进行排序 已解决? 决定订单下达 订单下达 重新排序 否 是 是 否 2001/2/21 常用调度措施 在需要压缩生产周期的情况下,一般有以下措施: 串行改平行作业 通过设依次顺序作业中下道工序的排队时间Q为负值来实现 依次顺序作业 平行顺序作业 工作中心1 工作中心2 工作中心3 Q S R M Q S R M Q S R M 提前期 Q S R M 工作中心 1 Q S R M 工作中心 2 Q S R M 工作中心 3 提前期 Q=排队时间 S=准备时间 R=加工时间 M=传送时间 2001/2/21 常用调度措施 加工单分批 把原来一张加工单加工的数量分成几批,由几张加工单来完成,以缩短加工周期。每批的数量可以不同。采用加工单分批或分割只有在用几组工作中心能完成同样的工作时才有可能。每组工作中心需要有准备时间,准备时间增加了。此外,还可能需要几套工艺装备,成本也会增加。有时,一道工序由一台工作中心完成 ,下一道工序分成由两组不同的工作中心加工,然后又由一台工作中心来完成第三道工序。 压缩排队、等待和传送时间。有人为设定和系统按设定的比例压缩两种处理方式。 替代工序或改变工艺 其它。如加班加点、调配人力。 2001/2/21 甘特图又叫作业进度计划表,可以用来帮助制定计划和跟踪作业。甘特 图是一种绘制任务的横道图.
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