Радіоелектронні і комп'ютерні системи (Apr 2020)
METHOD TO ORGANIZE LOGISTIC TRANSPORT INTERACTIONS FOR THE NEW ORDER PORTFOLIO OF DISTRIBUTED VIRTUAL MANUFACTURE
Abstract
The subject of research in the paper is to organize the logistics of interactions in a distributed virtual manufacture of high-tech products. The work aims to develop the method to find rational routes in the heterogeneous transport network, considering the time (deadlines), costs, and risks. The article addresses the following tasks: research of logistics interactions across the virtual manufacture of high-tech products (aircraft, automotive, etc.). Logistic interactions are carried out in a heterogeneous transport network that connects individual technological processes of high-tech manufacture. The features of logistics related to the virtualization of manufacture in the form of the new portfolio of orders are analyzed. The suppliers of materials, raw materials, and components that are located in the nodes of the heterogeneous transport network and which are the sources of goods transported in the distributed virtual manufacture are determined. To assess the possible routes of goods transportation in the heterogeneous transport network the values of time (deadlines of goods delivery), as well as freight costs and risks, are considered. The purposeful search for rational routes is carried out using the proposed algorithm for generating and moving numerical "waves" in a heterogeneous transport network. The simulation model to simulate the process of numerical “wave” propagation using planning and implementing of events related to the arrival of goods transported to the nodes of the heterogeneous transport network has been built. The algorithm to simulate the flow of requests in neighboring nodes concerning the node of the considered heterogeneous transport network has been developed. The dead-end nodes and possible parallel paths of equal types of transportation combining neighboring nodes are considered. The built algorithm includes two different phases of simulation: to achieve the “final” node and the inverse phase that is to define the route. The search algorithm is universal and makes it possible to find the routes with minimal time of goods transportation, minimal costs, and risks. The search for a compromise route that satisfies the conflicting criteria of time, cost, and risk has been proposed. The method of rational routes search is designed in the form of the agent simulation model. The following methods are used in the article: system analysis to create the topology of heterogeneous transport network structure; graph theory to represent the flows and routes of goods transportation; simulation to generate and move numerical "waves"; route optimization based on simulation; multi-criteria optimization to find the rational route; agent-oriented simulation to create the routes in the heterogeneous transport network. Conclusions: the proposed method to find the rational routes in a heterogeneous transport network of distributed virtual manufacture allows organizing the logistics transport interactions in distributed virtual production at the initial stages of planning of the new portfolio of orders.
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