关键词: 混杂系统, 生产线, 建模, 优化控制, 仿真

Abstract: To deal with hybrid nature of coexistence of continuity and discreteness in production line, modeling and optimization control methods of hybrid system were proposed. The hybrid automata model of a manufacturing cell (hybrid elementary structure) was studied. The hybrid system oriented to production line could be regarded as the combination of a number of hybrid elementary structures, which could avoid combinatorial explosion of model effectively due to system scale increase. Based on above analysis, the optimal control problem of the hybrid system was studied which maximized utilization rate of machines with certain production output. Numerical simulation based on Monte Carlo method was developed. The feasibility and efficacy of the model and control algorithm were proven via simulation example of a finite buffer capacity tandem line.

Key words: hybrid systems, production line, modeling, optimal control, simulation