关键词: 数字孪生, 自动导引车, 路径规划, A*算法, 车间物流

Abstract: Intelligent logistics is one of the five core industries for intelligent manufacturing,in which the workshop logistics distribution is an essential part.To solve the Automated Guided Vehicle AGV path planning problem in an automatic assembly workshop,an AGV path planning method driven by digital twin was proposed.An environment twin model of workshop was established,and then the conflict-free path planning algorithm based on the environment map twin model was designed.The twin model data is updated timely.With regard to delivery task orders arriving in real time,the improved A* algorithm combined with the dynamic adjacency matrix and time window matrix in the environment map twin model was used to plan conflict-free paths for the corresponding AGV in order of task priority.The simulation results of the proposed method proved that the time cost of task completion and conflict adjustment were reduced by 13.4% and 17.54% respectively.

Key words: digital twin, automated guided vehicle, path planning, A* algorithm, workshop logistics