关键词: 作业计划, 物料, 工艺状态, 16进制

Abstract: To improve low flexibility of accurate process replanning induced by various uncertainties such as uncertain customer orders，delayed supplies，machine breakdown and absenteeism, a descriptive method of material process state based on hex system was put forward after analyzing the advantages and disadvantages of various descriptive methods of material process state in lots of management software. By defining material process state vector, the material process state was described accurately with the value corresponding to the vector. In this way, an unfinished process could be described precisely and thus the low degree flexibility of accurate process replanning resulted from various uncertainties was improved greatly. Material process state vector was divided into several parts by defining material process state domain and its corresponding value. Consequently, a complete description of material process state, which could be applied to manufacturing process, was achieved. This description of material process state has provided an effective way to manage material and replan job-shop scheme.

Key words: process planning, material, process state, hex system