A simulation-based optimization method for facility layout considering the AGV path

Abstract

Aiming at the problem of facility layout in intelligent workshops, a collaborative optimization method of facility layout and AGV path planning based on discrete event simulation (DES) is proposed. This method can increase the production capacity of the workshop by solving the workshop open-field layout problem (OFLP). First, to simplify the complex constraints of OFLP, a mathematical programming model is established. Second, a hybrid algorithm is proposed to solve the optimal facility layout and the corresponding multiple AGV paths. Then, the DES is used to calculate the logistics data of the facility layout, and the capacity is taken as the algorithm objective function. Finally, a practical intelligent workshop layout problem is taken as a research case. The calculation results show that the capacity of the workshop is increased by 54% under the optimized layout. Through the special nonlinear integer programming mathematical model and discrete simulation modelling, the optimization method can take into account the complex dynamic logistics process and multiple AGV conflicts and give full play to the flexible and efficient characteristics of open-field layouts. The final workshop layout can not only be close to the actual situation but also have excellent performance.