交货期窗口下带有附加惩罚的单机提前/拖期调度问题

交货期窗口下的交货期确定和排序问题是调度领域研究的一个方面,本文对交货期口下的单机作业问题进行了研究,目标函数不仅考虑提前／拖期惩罚,还考虑附加惩罚,假设如果任务在交货期窗口内完工,则不受提前／拖期片罚;如果在交货期窗口外完工,将导致提前／拖期惩罚,本文确定了最优公共交货期,给出了相庆的最优排序,并提出了一个多项式时间算法确定了使目标函数为最小的最优调度,最后的数值例子说明了算法的有效性。     

用遗传／禁忌搜索混合算法求解可变加工时间的调度问题

有效地混合了遗传算法和禁忌搜索算法，对于一类加工时间可变的提前／拖期单机调度问题进行了研究。目标函数基于任务的提前／拖期惩罚、附加惩罚以及加工时间的偏离量惩罚，目标是确定最优的公共交货期、最优加工时间和最优加工顺序极小化目标函数，并与一般的遗传算法相比较，实验结果说明了遗传／禁忌混合算法的有效性。     

用模拟退火法解任务的加工时间为模糊区间数的单机提前/拖期调度问题

研究了单机作业下任务的加工时间为模糊区间数的提前／拖期调度问题。     

Job- shop 提前/拖期调度问题的研究

基于模糊控制和遗传算法,提出了求解Ｊｏｂ－ｓｈｏｐ提前／拖期间问题的联合算法,用遗传算法确定可行调度序列,然后用模糊控制器对开工时间加以调整,模糊控制的引入为有效地求解Ｊｏｂ－ｓｈｏｐ提前／拖期调度总理２提供了新的方法,仿真实验证明了联合自救的有效性。     

不同交货期窗口下的提前／拖期调度问题

本文对不同交货期窗口下的提前／拖期单机调度问题进行了分析，给出了最优序列中相邻工件对所满足的必要条件，提出了两个调度优先级法则，并在给出评价函数的基础上对此问题使用了过滤束搜索算法。文章的最后给出了实验结果和结论。     

具有提前ö拖期惩罚的热轧钢管批调度问题研究

建立了具有提前／拖期惩罚的热轧钢管批调度问题的混合整数非线性规划模型，提出并证明了给定合同排序下的最优组批方式，从而将原问题转化为易求解的合同排序问题．同时，建立了转化问题的数学模型并设计了遗传算法．仿真实验验证了模型和算法的有效性．     

混合流水车间提前/拖期调度问题的DE优化解

针对JIT生产模式下的混合流水车间调度问题特点,提出了采用DE算法与指派规则联合调度策略求解流水车间提前/拖期调度问题。构建了混合流水车间的提前/拖期调度模型。详细论述了DE算法的实施流程和关键问题。在算法实施过程中,首先,采用DE算法进行全局寻优,完成生产任务指派,确定某个工件在某个工序在哪个工位加工;然后采用局部指派规则来确定工件在该工序的开工时间。在满足目标完成时间(交货期)的前提下,使提前惩罚费用与拖期惩罚费用之和最小。数值计算结果证明了该算法的有效性。     

模糊加工时间单机E／T调度问题的GA算法

研究了单机模糊加工时间下，带有惩罚的提前和拖期（Ｅ／Ｔ）的调度模型，以计划评审法（ＰＥＲＴ）作为不同调度方案的评估准则，运用遗传算法得到不同的调度方案。比较了遗传算法的４种不同交叉因子，提出在遗传过程中，多种交叉方式按概率随机选取的新交叉方式，并对随机产生１００个不同规模的问题进行了仿真，仿真结果表明新的交叉方式普遍优于单一交叉方式。     

基于提前/拖期调度模型的电力检修企业生产管理系统设计

从当今电力检修企业面临的各种挑战出发，阐述了生产管理系统的特点和研究的必要性。使用面向对象编程语言Delphi和数据库系统SQL Server2000，按照企业设备检修流程设计开发了生产管理系统。系统运用提前／拖期调度模型，对企业生产作业流程进行计划、调度和控制，从而提高了生产效率，同时减少资源消耗和节约劳动力。     

软计算求解并行多机成组工件提前/拖期惩罚调度问题

1　问题描述成组工件提前 /拖期惩罚调度在实际生产中普遍存在、急待解决又十分复杂 .目前在国内外相关杂志上 ,还未见报道能够有效解决实际规模问题的方法 ,本文提出了软计算方法( SC) ,实验结果证明了它可以有效地解决大规模实际问题 .N个工件 ( b组 ,每组 ni个工件 ) ,M台机     

解并行多机提前/拖后调度问题的并行遗传算法

为有效地解决带有公共交货期的非等同并行多机提前/拖后调度问题,设计了一种分段扩展排列编码的混合遗传算法,使遗传编码能同时反映调度方案和公共交货期,并对其初始种群产生、交叉和变异方法也进行了研究。同时为了更好地适应调度实时性和解大规模此类问题的需要,基于遗传算法自然并行性特点的基础上,实现了主从式控制网络模式下并行混合遗传算法。计算结果表明,此算法是有效的,优于启发式算法和遗传算法,有着较高的并行性,并能适用于大规模非等同并行多机提前/拖后调度问题。     

解不同交货期并行机调度问题的并行遗传算法

为有效地解决不同交货期窗口下的非等同并行多机提前/拖后调度问题,设计了一种分段编码的混合遗传算法。此编码方式能反映工件的分配序列,并利用调度优先级规则和最好适应值规则相结合的启发式算法对其顺序进行了调整,加快了收敛速度。同时为了更好地适应调度实时性和解大规模此类问题的需要,基于遗传算法自然并行性特点的基础上,实现了主从式控制网络模式下并行混合遗传算法。计算结果表明,此算法是有效的,优于遗传算法,有着较高的并行性,并能适用于大规模不同交货期窗口下非等同并行多机提前/拖后调度问题。     

Scheduling in dynamic assembly job-shops to minimize the sum of weighted earliness,weighted tardiness and weighted flowtime of jobs

In many manufacturing systems, jobs that are completed early are held as finished-goods inventory until their due-dates, and hence we incur earliness costs. Similarly, jobs that are completed after their due-dates incur penalty. The objective in such situations would, therefore, be to meet the due-dates of the respective jobs as closely as possible, and consequently minimize the sum of earliness and tardiness of jobs because earliness and tardiness of jobs greatly influence the performance of a schedule with respect to cost. In addition, a job incurs holding cost from the time of its arrival until its completion. Most studies on scheduling in such manufacturing systems assume unit earliness cost, unit tardiness cost and unit holding cost of a job. However, in reality such an assumption need not always hold and it is quite possible that there exist different costs of earliness, tardiness and holding for different jobs. In addition, most studies on job-shop scheduling assume that jobs are independent and that no assembly operations exist. The current study addresses the problem of scheduling in dynamic assembly job-shops (i.e. shops that manufacture multi-level jobs) with the consideration of jobs having different earliness, tardiness and holding costs. An attempt is made in this paper to present dispatching rules by incorporating the relative costs of earliness, tardiness and holding of jobs in the form of scalar weights. In the first phase of the study, relative costs (or weights for) earliness and tardiness of jobs are considered, and the dispatching rules are presented in order to minimize the sum of weighted earliness and weighted tardiness of jobs. In the second phase of the study, the objective considered is the minimization of the sum of weighted earliness, weighted tardiness and weighted flowtime of jobs, and the dispatching rules are presented by incorporating the relative costs of earliness, tardiness and flowtime of jobs. Simulation studies have been conducted separately for both phases of the current study, the performance of the scheduling rules have been observed independently, and the results of the simulation study have been reported. The proposed rules are found to be effective in minimizing the mean and maximum values of the measures of performance.     

Generating efficient points of bicriteria scheduling problem by using compromise programming

In this paper, we examine a bicriteria scheduling problem with objective of minimizing total tardiness and earliness vs mean flow time and also minimizing total tardiness vs total earliness. Since they have conflicting results we will use compromise programming in order to generate the efficient point     

Scheduling in dynamic assembly job-shops to minimize the sum of weighted earliness,weighted tardiness and weighted flowtime of jobs

In many manufacturing systems, jobs that are completed early are held as finished-goods inventory until their due-dates, and hence we incur earliness costs. Similarly, jobs that are completed after their due-dates incur penalty. The objective in such situations would, therefore, be to meet the due-dates of the respective jobs as closely as possible, and consequently minimize the sum of earliness and tardiness of jobs because earliness and tardiness of jobs greatly influence the performance of a schedule with respect to cost. In addition, a job incurs holding cost from the time of its arrival until its completion. Most studies on scheduling in such manufacturing systems assume unit earliness cost, unit tardiness cost and unit holding cost of a job. However, in reality such an assumption need not always hold and it is quite possible that there exist different costs of earliness, tardiness and holding for different jobs. In addition, most studies on job-shop scheduling assume that jobs are independent and that no assembly operations exist. The current study addresses the problem of scheduling in dynamic assembly job-shops (i.e. shops that manufacture multi-level jobs) with the consideration of jobs having different earliness, tardiness and holding costs. An attempt is made in this paper to present dispatching rules by incorporating the relative costs of earliness, tardiness and holding of jobs in the form of scalar weights. In the first phase of the study, relative costs (or weights for) earliness and tardiness of jobs are considered, and the dispatching rules are presented in order to minimize the sum of weighted earliness and weighted tardiness of jobs. In the second phase of the study, the objective considered is the minimization of the sum of weighted earliness, weighted tardiness and weighted flowtime of jobs, and the dispatching rules are presented by incorporating the relative costs of earliness, tardiness and flowtime of jobs. Simulation studies have been conducted separately for both phases of the current study, the performance of the scheduling rules have been observed independently, and the results of the simulation study have been reported. The proposed rules are found to be effective in minimizing the mean and maximum values of the measures of performance.     

A meta-heuristic approach to solve a JIT scheduling problem in hybrid flow shop

In this paper we address a hybrid flow shop scheduling problem considering the minimization of the sum of the total earliness and tardiness penalties. This problem is proven to be NP-hard, and consequently the development of heuristic and meta-heuristic approaches to solve it is well justified. So, we propose an ant colony optimization method to deal with this problem. Our proposed method has several features, including some heuristics that specifically take into account both earliness and tardiness penalties to compute the heuristic information values. The performance of our algorithm is tested by numerical experiments on a large number of randomly generated problems. A comparison with solutions performance obtained by some constructive heuristics is presented. The results show that the proposed approach performs well for this problem.     

An exact approach to early/tardy scheduling with release dates

In this paper, we consider the single machine earliness/tardiness scheduling problem with different release dates and no unforced idle time. The problem is decomposed into weighted earliness and weighted tardiness subproblems. Lower bounding procedures are proposed for each of these subproblems, and the lower bound for the original problem is the sum of the lower bounds for the two subproblems. The lower bounds and several versions of a branch-and-bound algorithm are then tested on a set of randomly generated problems, and instances with up to 30 jobs are solved to optimality. To the best of our knowledge, this is the first exact approach for the early/tardy scheduling problem with release dates and no unforced idle time.     

解决并行多机提前/拖后调度问题的混合遗传算法方法

研究了带有公共交货期的并行多机提前/拖后调度问题.提出了一种混合遗传算法 方法,以便于确定公共交货期和每台机器上加工的任务代号及其加工顺序,即找到一个最优 公共交货期和最优调度,使加工完所有任务后交货期安排的成本、提前交货成本和拖后交货 成本的总和最小.数值计算结果表明了该混合遗传算法优于启发式算法,并能适用于较大规 模并行多机提前/拖后调度问题.算法计算量小,鲁棒性强.     

带有交货期的比例流水车间调度问题的合作博弈

针对具有多个客户订单的比例流水车间调度问题,在考虑有交货期及提前和拖期惩罚下,以客户支出成本为优化指标,在客户通过合作结成联盟的方式下,以联盟内成员进行重新调度所获得的最大成本节省为联盟的价值,建立合作博弈模型.该合作博弈是具有无外部性的平衡博弈,从而有非空核.考虑到客户对提前加工和延迟加工的迫切程度不同,提出基于提前及拖期惩罚的β规则分配方法,该方法能得到带有交货期的比例流水车间调度合作博弈的一个核分配.通过混合差分进化算法求解最优调度顺序,实验结果验证了基于合作博弈模型的调度方法及成本分配方法的有效性.