Logistics Scheduling Model of Cold Rolling Intermediate Storage Based on Hybrid Flow Shop Principle

Abstract

With the rapid development and application of Intelligent Logistics technology in metallurgical production, in recent years, a kind of intermediate warehouse transportation system in steel plant, represented by Railroad Mother Nested Multi-Car System, has gradually appeared, which effectively solves the drawbacks of crane lifting in the intermediate warehouse area and improves the transportation efficiency of shop-level logistics. However, at present, the scheduling strategy research of this kind of multi-vehicle cooperative transportation unit has been carried out. There are not many applications, which is also a bottleneck for the intelligent control of this kind of multi-vehicle transportation system. In this paper, aiming at the characteristics of the cross-composite configuration of multiple subcars and mothercars in the logistics transportation system of intermediate warehouse, the joint operation scenario of accessing and accessing cold rolled intermediate warehouse coils is analyzed, and the detailed decomposition is made, the system operation rules and boundary conditions are formulated, and the process iteration based on mixed flow shop is established.The mathematical model of system dispatch optimization based on the principle is obtained, and the objective function of optimizing the dispatch of sub-parent vehicles in the intermediate warehouse logistics system is obtained. Therefore, it provides a practical theoretical basis for the intelligent control of this kind of child parent multi vehicle logistics system and improving the equipment operation efficiency, especially for the logistics scheduling planning in the reservoir area of metallurgical heavy load field.