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A performance evaluation method and device for a multi-storey 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: 2022-06-07
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A performance evaluation method and device for a multi-storey shuttle vehicle system
  • A performance evaluation method and device for a multi-storey shuttle vehicle system
  • A performance evaluation method and device for a multi-storey shuttle vehicle system

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Embodiment 1

[0044] like figure 1 As shown, this embodiment provides a method for evaluating the performance of a multi-layer shuttle system, which includes:

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

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

[0047]

[0048]

[0049] In order to simplify the model, the following assumptions are put forward for AVS / RS in this embodiment: (1) When the material box is returned to the warehouse, follow the random cargo space allocation strategy; (2) The movable system equipment is the docking point of roadway vehicles, transfer vehicles and hoists (3) The order obeys the principle of first-come, first-served; (4) The order arrival obeys Poisson distribution; (5) The service time of the picking table is constant, and the service time of the mobile system equipment follows the general distribution; ...

Embodiment 2

[0169] like Figure 9 As shown, this embodiment provides a multi-layer shuttle system performance evaluation device, which includes:

[0170] (1) A module for establishing an open-loop queuing network model, which is used to respectively establish an open-loop queuing network model of a transshipment vehicle system and an open-loop queuing network model of a loop line system;

[0171] Specifically, in the open-loop queuing network model establishment module, the open-loop queuing network model of the reloading vehicle system and the open-loop queuing network model of the loop line system are both constructed under the following assumptions:

[0172] When the material box is returned to the warehouse, follow the random location allocation strategy;

[0173] The stop point of the movable system equipment, that is, the roadway vehicle, the transfer vehicle and the hoist, is the completion point of the last entry and exit operation;

[0174] Orders are subject to the principle o...

Embodiment 3

[0187] This embodiment provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, realizes the following: figure 1 Steps in the performance evaluation method for the multi-level shuttle system shown.

[0188] In this embodiment, the open-loop queuing network models of the two systems are first established, and then the system throughput and order completion cycle are calculated. Under the condition that the number of layers and the number of lanes are constant, the corresponding throughput and In the order completion cycle, the optimal multi-storey 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 multi-storey shuttle system evaluation.

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Abstract

The disclosure provides a method and device for evaluating the performance of a multi-storey shuttle vehicle system. Among them, a method for evaluating the performance of a multi-storey shuttle vehicle system, including establishing the open-loop queuing network model of the transfer vehicle system and the open-loop queuing network model of the loop system; Calculate the throughput and order completion cycle corresponding to the corresponding open-loop queuing network model; respectively, in the case of a certain number of floors and lanes, according to the corresponding throughput and order completion cycle of the corresponding open-loop queuing network model, the optimal multi-storey shuttle system.

Description

technical field [0001] The present 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 logistics distribution centers show a trend of multiple varieties, small batches and fast response, which puts forward higher requirements for the picking system. Multi-layer shuttle system (Automated Vehicle Storage / Retrieval System, AVS / RS) has been widely used in recent years due to its high efficiency and accuracy. Usually, the multi-level shuttle system is composed of an aisle shuttle vehicle (referred to as an aisle vehicle) and a hoist, but this structural system needs to be combined after the picking is comple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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