Research Of Automatic Logistics System’s Control System Based On Partheno Genetic Ant Colony Algorithm

Automated Storage and Retrieval System(AS/RS) is an important component of modern logistics system. It combines advanced computer control technology, field bus technology, information management technology and achieves automation of the access and handling of goods. Automated Storage and Retrieval System have a wide range of applications in all walks of life.The research platform of this thesis is the automatic logistics system in Subjects Experimental Center of XUST(Xi’an University of Science and Technology). Aiming at path planning of the stacker order picking of this automated logistics system, a new optimization algorithm is proposed in this paper. Simulation results demonstrate the validity. Based on this conclusion,the development of this automatic logistics system’s control software is completed.Firstly, the hardware of the automatic logistics system in Subjects Experimental Center of XUST is introduced and analyzed. The characteristics of the stacker order picking operation is analyzed in depth. Based on these characteristics, the mathematical model of time consideration of the stacker order picking operation is established and abstracted as the traveling salesman problem. The various algorithms to solve the problem are analyzed and compared. Aiming at the advantages and disadvantages of Ant Colony System and Partheno Genetic Algorithm, a new improved algorithm which is called Partheno Genetic Ant Colony Algorithm(PGACA) is proposed. The order picking path planning is optimized by PGACA, and simulation in Matlab environment, satisfactory optimization results are received.Secondly, because of the original control software for the automated logistics system has shortcomings just as its processing function is imperfect and the stacker can not complete the front shelves job, therefore, on the basis of the original control software, functions of front shelves load,discharge and moving are newly developed based on VC++ MFC framework. Processing function of the entire logistics system processing lines is accomplished. These functions are verified by experiments in the automated logistics system hardware platform, the normal operation of the various functions of the entire automated logistics system. The normal operations of the various functions of the entire automated logistics system are achieved.Finally, control system is configured based on WinCC software. Automated logistics system monitoring interface is developed. Transit through the OPC Server, the communication between monitoring PC and PLC is established. The field data can be collected by the host computer in real-time to facilitate the monitoring of the entire automated logistics system.