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Performance evaluation method and device for multi-layer shuttle vehicle system

A system performance evaluation and shuttle car technology, applied in the field of shuttle car program recommendation, can solve problems such as system throughput and order completion cycle differences, and difficulty in system selection for enterprise decision makers, so as to improve accuracy, reduce initial decision-making costs, and reduce The effect of input costs

Active Publication Date: 2020-05-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors found that the current performance evaluation method for the multi-storey shuttle vehicle system has the following problems: the two types of AVS / RS based on the reloading vehicle and the circular conveyor line, both of which can achieve fast picking of goods, but in the system throughput There are differences in the quantity and order completion cycle, which makes it difficult for business decision makers to choose a system

Method used

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  • Performance evaluation method and device for multi-layer shuttle vehicle system
  • Performance evaluation method and device for multi-layer shuttle vehicle system
  • Performance evaluation method and device for multi-layer shuttle vehicle system

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Embodiment 1

[0044] Such as figure 1 As shown, the present embodiment provides a method for evaluating the performance of a multi-storey shuttle vehicle system, which includes:

[0045] Step 1: Establish the open-loop queuing network model of the transfer vehicle system and the open-loop queuing network model of the loop line system respectively.

[0046] The system variables of this embodiment are defined as follows:

[0047]

[0048]

[0049] In order to simplify the model, this embodiment puts forward the following assumptions for AVS / RS: (1) when the material box is returned to the warehouse, follow the random location allocation strategy; (2) the movable system equipment is the stop of the roadway truck, transfer truck and elevator (3) Orders follow the first-come-first-served principle; (4) Order arrivals follow the Poisson distribution; (5) The service time of the sorting table is constant, and the service time of mobile system equipment follows a general distribution; (6) T...

Embodiment 2

[0166] Such as Figure 9 As shown, the present embodiment provides a multi-storey shuttle system performance evaluation device, which includes:

[0167] (1) Open-loop queuing network model building module, which is used to set up the open-loop queuing network model of the transfer vehicle system and the open-loop queuing network model of the loop system respectively;

[0168] Specifically, in the described open-loop queuing network model building module, the open-loop queuing network model of the reload vehicle system and the open-loop queuing network model of the ring line system are all constructed under the following assumptions:

[0169] When the material box is returned to the warehouse, follow the random location allocation strategy;

[0170] The stopping point of the movable system equipment, that is, roadway truck, transfer truck and hoist, is the completion point of the last entry and exit operation;

[0171] Orders are subject to the first-come-first-served princip...

Embodiment 3

[0184] This embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following figure 1 Steps in the method for evaluating the performance of a multi-storey shuttle system are shown.

[0185] In this embodiment, the open-loop queuing network models of the two systems are first established, and then the system throughput and the order completion cycle are solved, respectively, when the number of floors and the number of lanes are fixed, according to the corresponding throughput and the corresponding open-loop queuing network model According to the order completion cycle, the optimal multi-layer shuttle system is evaluated, which reduces the initial decision-making cost of the enterprise decision-making layer, reduces the input cost of manpower and material resources, and improves the accuracy of the evaluation of the multi-layer shuttle system.

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Abstract

The invention provides a performance evaluation method and device for a multi-layer shuttle vehicle system. The performance evaluation method for the multi-layer shuttle vehicle system comprises the following steps: respectively establishing an open-loop queuing network model of a transfer vehicle system and an open-loop queuing network model of a loop line system; based on the transfer vehicle system open-loop queuing network model and the loop line system open-loop queuing network model, the throughput and the order completion period corresponding to the corresponding open-loop queuing network model are calculated respectively; under the condition that the number of layers and the number of roadways are fixed, the optimal multi-layer shuttle vehicle system is evaluated according to the throughput and the order completion period corresponding to the corresponding open-loop queuing network model.

Description

technical field [0001] The disclosure belongs to the field of shuttle car scheme recommendation, and in particular relates to a method and device for evaluating the performance of a multi-layer shuttle car system. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the rapid development of e-commerce, the orders of the logistics distribution center show a trend of multi-variety, small batch and fast response, which puts forward higher requirements for the picking system. The Automated Vehicle Storage / Retrieval System (AVS / RS) has been widely used in recent years due to its high efficiency and precision. Usually, the multi-storey shuttle vehicle system is composed of a roadway shuttle vehicle (referred to as roadway vehicle for short) and a hoist, but this structural system needs to be combined with the order after the picking is complet...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/08
CPCG06Q10/0639G06Q10/087Y02P90/30
Inventor 吴颖颖秦彩云马文凯胡金昌杨金桥田彬
Owner SHANDONG UNIV
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