| Popis: |
A hull block assembly sequence planning (ASP) problem is modeled as a constraint satisfaction problem where the precedence relations between operations are considered constraints. In order to generate the proper assembly sequence of the hull block, we analyzed the structure features of the block and built the hierarchical assembly model of the block. Based on this model, we divided the whole process of the block assembly into the small subassembly phase and the unit subassembly phase. There exists the rule that the assembly process of the subassembly in the same phase is similar, and it's different to the subassembly in the different phases. So, we proposed the different methods to plan the assembly sequence of the different phases. An example is given to illustrate that this two phased method can solves the block ASP problem effectively and accurately. |
