• 论文 •    

基于改进免疫遗传算法的船台吊装网络优化

续爱民,金  烨   

  1. 上海交通大学 机械与动力学院CIM研究所,上海  200030
  • 收稿日期:2005-03-04 修回日期:2005-05-30 出版日期:2006-05-15 发布日期:2006-05-25
  • 基金资助:
    上海市科委重大专项基金资助项目(04DZ11004)。

Optimization of network of block erection on dock using modified immune genetic algorithm

XU Ai-min,JIN Ye   

  1. CIM Inst.,Sch. of Mechanical & Power Eng.,Shanghai Jiaotong Univ.,Shanghai  200030,China
  • Received:2005-03-04 Revised:2005-05-30 Online:2006-05-15 Published:2006-05-25
  • Supported by:
    Project supported by the Key Item Program of S&T Committee of Shanghai City,China(No.04DZ11004).

摘要: 为了优化起重设备和场地等资源约束下的船舶吊装过程,针对船舶吊装过程,利用时间库所Petri网建立模型,将改进免疫遗传算法应用到所建时间库所Petri网的变迁触发顺序搜索中,提出了一种适合这类问题的交叉变异算子和亲和度计算方法,提高了运算的收敛速度,避免了启发式搜索算法和传统遗传算法由于局部收敛导致的不足。最后,给出了一个实例,通过对具体的某型号散货船吊装过程进行优化,进一步说明了这种方法对于解决船台吊装网络优化问题的有效性。

关键词: 免疫遗传算法, 时间Petri网, 船台, 网络, 吊装

Abstract: In order to optimize block erection with resources constraints such as hoist equipments and fields in a shipyard,a model of the erection process of block on dock was built based on Timed Place Petri Nets (TPPN) and modified immune algorithm was used to search the best sequence of translation of the TPPN. The novel crossover factor and affinity calculation algorithm were proposed. This method greatly improved the convergence speed of optimization of this kind of problem and avoided the local convergence defect of heuristic search method and traditional genetic algorithm. Finally,a case study of the optimization of 74,500 DWT bulk carrier block erection process was given to illustrate the effectiveness of the method.

Key words: immune genetic algorithm, timed Petri net, dock, network, block erection

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