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| Multi Objective Optimization Problem of Tier-to-tier Multi-shuttle Warehouse System with Double Lifts |
| LI Juntao, HU Qixian, LIU Pengfei, GUO Wenwen
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| School of Engineering Science and Technology, Shanghai Ocean University, Shanghai 201306, China |
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Abstract The purpose of studying the task scheduling problem of the system is to improve the efficiency of the tier-to-tier multi-shuttle warehouse system with double lifts.The energy consumption of shuttle system is considered in the warehousing operation,and the dual objective model is established, including two objectives: operation time and energy consumption of shuttle system.The method of remove scalarization is used to change the dual objective model into a single objective model. An self-adaption genetic simulated annealing algorithm is proposed, and example is given to verify the effectiveness of the model and algorithm.The results show that compared with the traditional genetic algorithm, the adaptive genetic simulated annealing algorithm has higher solution accuracy, the optimization rate of time is increased by 20.7%, and the optimization rate of energy consumption is increased by 15.5%.The experimental results show that, through the warehousing operation model of the tier-to-tier multi-shuttle warehouse system with double lifts established in this paper and its solution algorithm, it can effectively reduce the system energy consumption and time, so as to improve the warehousing efficiency.
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Received: 28 August 2021
Published: 09 January 2023
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