發(fā)布時間：2018-03-25 18:03

  本文選題：糧食倉儲系統(tǒng)　切入點：仿真　出處：《蘭州交通大學(xué)》2017年碩士論文

【摘要】：糧食是關(guān)系民生的大問題,糧食倉儲在糧食流通體系中占據(jù)著非常重要的地位。國內(nèi)大背景下,國家近兩年新建糧倉倉容1億噸,預(yù)計到2020年全國需要再新建倉容1億噸。而現(xiàn)有糧食企業(yè)倉儲系統(tǒng)存在運作效率低,庫內(nèi)資源配置不合理,設(shè)備利用率低和倉儲成本高等問題。因此,降低倉儲費用,加快周轉(zhuǎn)率,提高運作效率已成為了亟待解決的問題�；�于國內(nèi)大背景和整個糧食行業(yè)面臨的問題,本文將研究對象定位于糧食企業(yè)倉儲系統(tǒng),主要對其出入庫作業(yè)進行研究。由于物流倉儲系統(tǒng)具有不確定性和復(fù)雜性,本文采用Flexsim仿真軟件對糧食企業(yè)倉儲系統(tǒng)進行建模、仿真、分析和優(yōu)化,以達到提高糧食企業(yè)倉儲系統(tǒng)運行效率的目的。本文首先對糧食企業(yè)倉儲系統(tǒng)進行了綜合性分析,建立起系統(tǒng)的出入庫作業(yè)流程,重點分析了三種主要類型糧倉的倉儲工藝,并確立了整個倉儲系統(tǒng)的評價指標體系。其次,詳細概括了離散事件系統(tǒng)仿真及Flexsim軟件的相關(guān)理論知識。然后,以系統(tǒng)概念模型為基礎(chǔ)建立了以效率最大化為目標的數(shù)學(xué)模型,與概念模型相比較,數(shù)學(xué)模型更能對糧食企業(yè)倉儲系統(tǒng)進行量化說明。在此基礎(chǔ)上,運用Flexsim軟件建立糧食企業(yè)倉儲系統(tǒng)的出入庫仿真模型。確定系統(tǒng)具體的仿真目標,對模型進行適當(dāng)?shù)暮喕�與假設(shè),設(shè)定模型中實體的參數(shù)并運行仿真模型。通過詳細分析仿真輸出結(jié)果,找到系統(tǒng)瓶頸并對存在問題予以優(yōu)化。最后,將糧食企業(yè)倉儲系統(tǒng)出入庫仿真模型及其優(yōu)化方法應(yīng)用到成都市某糧食企業(yè),進行案例分析。根據(jù)企業(yè)的實際情況,對仿真模型設(shè)定新的參數(shù)并運行,分析模型找到其存在問題。根據(jù)優(yōu)化方法,對模型提出具體的優(yōu)化方案并驗證方案的合理性。結(jié)果表明優(yōu)化后的出入庫仿真模型可以消除系統(tǒng)瓶頸,提高系統(tǒng)作業(yè)效率。本文的研究契合了糧食企業(yè)實際發(fā)展的需求,為我國糧食企業(yè)倉儲成本的降低、倉儲效率的提高提供了一定的參考價值,同時也能對國內(nèi)即將進行的糧倉倉容建設(shè)大潮起到推動作用。
[Abstract]:Grain is a major issue related to people's livelihood, and grain storage occupies a very important position in the grain circulation system. In the domestic context, the new granary built by the state in the past two years has a capacity of 100 million tons. It is estimated that by 2020, the whole country will need to build another 100 million tons of storage capacity. However, the existing storage systems of grain enterprises have problems such as low operational efficiency, unreasonable allocation of resources in warehouses, low utilization of equipment and high storage costs. Therefore, reduce storage costs. To speed up the turnover rate and improve the operational efficiency has become an urgent problem to be solved. Based on the domestic background and the problems faced by the whole grain industry, this paper focuses on the storage system of grain enterprises. Due to the uncertainty and complexity of the logistics warehousing system, this paper uses Flexsim software to model, simulate, analyze and optimize the storage system of grain enterprises. In order to improve the operational efficiency of grain enterprise storage system, this paper firstly analyzes the grain enterprise storage system, establishes the operation flow of the system, and analyzes the storage technology of three main types of grain warehouse. The evaluation index system of the whole storage system is established. Secondly, the theoretical knowledge of discrete event system simulation and Flexsim software is summarized in detail. Then, based on the system conceptual model, a mathematical model aiming at maximizing efficiency is established. Compared with the conceptual model, the mathematical model can quantify the storage system of grain enterprises. On this basis, the Flexsim software is used to establish the simulation model of the storage system of grain enterprises, and the specific simulation objectives of the system are determined. The model is simplified and hypothesized properly, the parameters of the entity in the model are set and the simulation model is run. By analyzing the simulation output in detail, the bottleneck of the system is found and the existing problems are optimized. The simulation model and its optimization method of grain storage system are applied to a grain enterprise in Chengdu, and the case is analyzed. According to the actual situation of the enterprise, the new parameters of the simulation model are set up and run. According to the optimization method, the concrete optimization scheme is put forward and the rationality of the scheme is verified. The results show that the optimized model can eliminate the bottleneck of the system. The research in this paper accords with the actual development needs of grain enterprises, and provides a certain reference value for the reduction of storage cost and the improvement of storage efficiency of grain enterprises in China. At the same time, it can also promote the construction of granary capacity in China.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：F324;TP391.9

【參考文獻】

相關(guān)期刊論文 前10條

1 王西;;汽車白車身立體化倉庫輸送系統(tǒng)的仿真優(yōu)化[J];公路交通科技(應(yīng)用技術(shù)版);2015年11期

2 李汝仙;;基于Flexsim的貨位優(yōu)化仿真[J];物流技術(shù);2015年21期

3 亢霞;鐘昱;張慶;;我國糧食倉容現(xiàn)狀、存在問題及對策研究[J];農(nóng)業(yè)現(xiàn)代化研究;2015年05期

4 汪傳雷;蔣孝成;王艷;;綠色物流倉儲系統(tǒng)研究[J];物流工程與管理;2015年01期

5 曾鳴;程文明;曾剛;;鐵路貨場倉儲作業(yè)過程仿真與優(yōu)化[J];工業(yè)工程;2014年03期

6 顧嘉;廖棟霞;熊根良;陸遠;;裝配生產(chǎn)線仿真與優(yōu)化技術(shù)研究[J];機械設(shè)計與制造;2014年05期

7 井永水;翟紅;;濟鋼物流倉儲管理系統(tǒng)整合措施[J];山東冶金;2011年05期

8 陸瑞興;楊穎;張毅;;決策樹算法在物流倉儲中的研究與應(yīng)用[J];微計算機信息;2010年30期

9 白曉;，

本文編號：1664243