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基于虚拟流水线的船舶分段建造调度问题研究 总被引:1,自引:0,他引:1
针对传统船舶分段制造中出现的生产等待、时间冗余等问题,应用虚拟流水线生产模式的方法进行生产系统改造。在满足约束的前提下,建立以作业班组在生产系统中的流通时间最短为目标的班组调度模型。针对分段车间调度问题应用一种基于混合蚁群遗传算法(Mixed AntColony and Genetic Algorithm,MACGA)实现了作业班组的优化调度。最后,以某造船厂分段加工车间为例,验证了虚拟流水线模式及其调度方法可以有效的提高船舶分段的生产效率。 相似文献
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在AIS调度计划中可以采集并处理船舶的停靠数据,使其与地理信息系统结合,形成一个直观的动态化图形,利用系统的时间与船舶定位系统可以对船舶的到港率进行分析,更好地对船舶调度进行直观控制。 相似文献
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《中国高新技术企业评价》2015,(33)
电网调度自动智能化是当今电网发展的新趋势。文章阐述了电网调度自动智能化的主要技术以及实现电网调度自动智能化对未来智能电网调度系统建设的重要意义,希望给我国智能电网建设带来一定的参考及借鉴。 相似文献
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三峡-葛洲坝船舶监管系统在船舶过闸管理中的应用 总被引:1,自引:1,他引:0
三峡—葛洲坝船舶监管系统作为目前国内内河先进的通航指挥系统在三峡河段投入使用后,提高了三峡河段的过闸管理能力和安全监管水平,本文介绍了监管系统构成情况及其在通航安全管理业务中的应用情况。 相似文献
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武志强 《中小企业管理与科技》2012,(27)
目前,国内电力调度趋向于智能化方向发展,其基础是调查度信息化,因为只有使调度信息和其他领域的相关信息得到充分整合与共享,调度才能实现智能化,然而此处所涉及的信息共享与整合有三个层面的含义,及调度机构本身的信息共享与整合;纵向贯通调度系统与厂站端信息以及横向集成调度系统信息与其它相关系统信息.本文就针对以上问题展开讨论. 相似文献
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本文就企业铁路调车自动控制方式与调车作业安全防护方面进行探讨,重点在于将企业铁路基础信息、现车以及所有车辆信息纳入整体信息管理之中,结合车辆属性类型、线路实时情况自动选择车列行走径路,使用无线数据传输方式将实时站场情况和调车计划等传送至相应的调车机上,并在此基础上实现调车作业的安全防护。 相似文献
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近年来,集装箱船舶向大型化、高速化、自动化的趋势发展,文章以金塘大浦口港口为例,结合集装箱码头的自然条件、装卸设备对港口提出的要求,探讨了集装箱船舶大型化给港口发展带来的挑战和机遇。 相似文献
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介绍了实验室排课系统的设计思路、特点及相关技术,并结合具体实际情况,提出并开发一套以处理排课问题的算法为核心的自动排课系统。 相似文献
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Jay E. Aronson 《Journal of Operations Management》1984,4(2):159-173
The semiautomatic nature of machinery often makes it economical to assign more than one machine to a single operator. Multi-machine assignments are common in the textile, tooling and molding industries. They are also found where numerically controlled (NC) machinery are used and, more recently, where flexible manufacturing systems (FMS) are employed. Previous work on deterministic cyclic scheduling models has focused on determining the optimal number of usually identical machines with single runs to assign to an operator. In practice, the schedules are represented by man/machine charts.When, due to production requirements, we mix different types of runs with known times on non-identical machines, we have the deterministic, single operator, multiple machine, multiple run, cyclic scheduling problem. We present two heuristics for solving this more realistic generalization of earlier problems. For the nonidentical, multiple run case, the scheduling of the runs is crucial in minimizing the cycle time of the system. The integer programming formulation of small problems is large, and solving it directly could require excessive computation time on a large mainframe computer.Heuristic 1 selects the next machine run to schedule by minimizing the total immediate waiting cost of the operator and machines. The hourly machine costs reflect the relative merit of utilizing certain machines over others. Heuristic 2 first schedules the machine with the longest automatic processing time of run one. It then follows Heuristic 1 until the long processing time of the first run has ended. The next available run with the longest automatic processing time is then scheduled, and the process repeats. The underlying notion is that many short runs may be performed during the long automatic run of a machine.The heuristics are polynomially bounded, can be easily implemented on a mini- or micro-computer and in practice should be much faster than integer programming methods. In addition to the heuristics, we compute a lower bound on the cycle time. We use this bound as a measure of the effectiveness of a solution. If for a given schedule, the cycle time equals its lower bound, then the solution is optimal.Both heuristics were coded in FORTRAN on a CDC-6600 computer. An interactive version was also developed for a DEC PDP11/70. A detailed computational study is presented. In it, both heuristics solved 50 machine, 5 run problems in less than 10 CPU seconds on the CDC-6600. Computational experience indicates that the heuristics are efficient and often find schedules which have cycle times within 10% the lower bound. 相似文献
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为了模拟地震救援无线网络系统的可行性,本设计开发了一套地震救援指挥中心进行现场调度的动态演示平台,该平台可以完整的模拟出地震发生后,指挥中心向灾区派遣应急车并进行现场伤员搜救、抢修断桥、运输救灾物资的整个过程。应急车采用自动循迹、智能避障及对坑洼路况进行模式判断,保证了应急车行驶路线合理、可靠。整个演示过程无需人工操作,可以给观赏者完美的展示出自动控制领域中高端的艺术表演。 相似文献
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Holmes E. Miller 《Socio》1976,10(6):241-249
In many public systems efficiencies may be realized by improved personnel scheduling. This paper surveys the literature on personnel scheduling in the public domain. Two general problems are considered: the daily scheduling problem where hourly employee work day patterns are determined and the weekly scheduling problem where day off and day on work week patterns are constructed. The daily problem is discussed in terms of scheduling with and without simultaneous work assignment; and the weekly problem is dichotomized into those schedules based on cyclical personnel requirements and those that are not. 相似文献
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文中通过对船检部门在水上安全监管中存在问题进行分析,探索地方船检工作由被动检验到主动监管转变的途径,提出地方船检在水上安全监督管理中发挥作用的建议,这个途径就是落实责任,责任是质量,责任是创新,责任是效能,责任是船检工作的立命之本。 相似文献