本文關(guān)鍵詞： 倉儲(chǔ)系統(tǒng) 分揀系統(tǒng) 平臺(tái)分離的自動(dòng)存取系統(tǒng) 行走時(shí)間模型 打包策略 待命位點(diǎn)策略　出處：《華中科技大學(xué)》2016年博士論文　論文類型：學(xué)位論文

【摘要】：倉儲(chǔ)系統(tǒng)是現(xiàn)代供應(yīng)鏈的一個(gè)重要組成部分,是決定企業(yè)成敗的關(guān)鍵角色。為了適應(yīng)供應(yīng)鏈中的各種可變性,倉儲(chǔ)系統(tǒng)暫時(shí)地存儲(chǔ)產(chǎn)品和半成品。許多因素可能造成供應(yīng)鏈的可變性,例如,來自不同供應(yīng)商的產(chǎn)品或者半成品的整合；產(chǎn)品的季節(jié)性；類似貼標(biāo)簽、重新包裝和產(chǎn)品定制化等額外增值服務(wù)。在決定供應(yīng)鏈的物流配送網(wǎng)絡(luò)的效率時(shí),倉儲(chǔ)系統(tǒng)的績效是一個(gè)至關(guān)重要的因素。影響倉儲(chǔ)系統(tǒng)的績效的因素有很多,包括訂單分揀,存取操作,倉庫的設(shè)計(jì),倉庫的布局和分區(qū)等。本文主要研究了打包分揀和存取操作這兩個(gè)因素對(duì)倉儲(chǔ)系統(tǒng)績效的影響。首先,研究了分揀系統(tǒng)的訂單打包問題。建立了可變時(shí)間窗打包背景下的訂單產(chǎn)出時(shí)間模型,并分析了可變時(shí)間窗背景下,訂單打包對(duì)訂單期望產(chǎn)出時(shí)間的影響。另外,采用靈敏度分析的方法分析了分揀巷道的數(shù)量,訂單的期望間隔到達(dá)時(shí)間,分揀巷道的長度和低層存儲(chǔ)貨位的百分比這四個(gè)因素對(duì)打包批次和訂單期望產(chǎn)出時(shí)間的影響。然后,研究了平臺(tái)分離的自動(dòng)存取系統(tǒng)在I/O待命位點(diǎn)策略下的兩個(gè)優(yōu)化問題。在第一個(gè)優(yōu)化問題中,首先提出了平臺(tái)分離的自動(dòng)存取系統(tǒng)在I/O待命位點(diǎn)策略下的雙指令循環(huán)行走時(shí)間模型,然后使用計(jì)算機(jī)仿真驗(yàn)證了這個(gè)雙指令循環(huán)行走時(shí)間模型的精確性。并比較了本文提出的雙指令循環(huán)行走時(shí)間模型和前人提出的單指令循環(huán)行走時(shí)間模型,實(shí)驗(yàn)結(jié)果表明,雙指令循環(huán)操作模式比單指令循環(huán)操作模式可以獲得更小的期望行走時(shí)間。在第二個(gè)優(yōu)化問題中,本文首先分別建立了平臺(tái)分離的自動(dòng)存取系統(tǒng)在I/0待命位點(diǎn)策略下考慮一個(gè)貨架和考慮兩個(gè)貨架的雙指令循環(huán)優(yōu)化行走時(shí)間模型,在建立了這兩個(gè)雙指令循環(huán)優(yōu)化行走時(shí)間模型之后,使用凸優(yōu)化的方法分析了這兩個(gè)優(yōu)化行走時(shí)間模型在不同情形下的績效。最后分別使用計(jì)算機(jī)仿真和比較性實(shí)驗(yàn)驗(yàn)證了提出來的兩個(gè)雙指令循環(huán)優(yōu)化行走時(shí)間模型的精確性和有效性。最后,研究了平臺(tái)分離的自動(dòng)存取系統(tǒng)在停留在原地的待命位點(diǎn)策略下的優(yōu)化問題。本文首先建立了平臺(tái)分離的自動(dòng)存取系統(tǒng)在停留在原地的待命位點(diǎn)策略下的雙指令循環(huán)行走時(shí)間模型,然后使用計(jì)算機(jī)仿真驗(yàn)證了雙指令循環(huán)行走時(shí)間模型的精確性。并將本文建立的雙指令循環(huán)行走時(shí)間模型和前人研究的單指令循環(huán)行走時(shí)間模型進(jìn)行了比較,驗(yàn)證了本文提出的雙指令循環(huán)行走時(shí)間模型的有效性。
[Abstract]:Storage system is an important part of modern supply chain and a key role to determine the success or failure of enterprises. Storage systems temporarily store products and semi-finished products. Many factors may contribute to the variability of the supply chain, for example, integration of products or semi-finished products from different suppliers; seasonality of products; similar labelling, Additional value-added services such as repackaging and product customization. The performance of the warehousing system is a critical factor in determining the efficiency of the logistics and distribution network in the supply chain. There are many factors that affect the performance of the warehousing system, including order sorting, Access operation, warehouse design, warehouse layout and partition. This paper mainly studies the impact of packaging and sorting and access operation on the performance of storage system. This paper studies the order packing problem in the sorting system, establishes the order output time model under the variable time window packaging background, and analyzes the influence of the order packing on the order expected output time under the variable time window background. The effects of four factors, such as the number of sorting roadways, the expected arrival time of order interval, the length of sorting roadway and the percentage of lower storage space, on the packing lot and the expected output time of the order are analyzed by using sensitivity analysis method. In this paper, two optimization problems of platform-separated automatic access system under I / O standby locus strategy are studied. In the first optimization problem, First of all, a dual instruction cycle walking time model of platform separated automatic access system under I / O standby locus strategy is proposed. Then computer simulation is used to verify the accuracy of this model, and the proposed model is compared with the single instruction cycle walking time model proposed in this paper. The experimental results show that, The dual instruction loop mode can achieve a smaller expected walking time than the single instruction loop operation mode. In the second optimization problem, In this paper, we first establish a dual instruction cycle optimal walking time model for platform-separated automatic access systems considering one shelf and two shelves under the I / 0 standby locus strategy, respectively. After the establishment of the two double instruction loop optimization walking time models, The performance of the two optimal walking time models under different conditions is analyzed by using convex optimization method. Finally, the proposed two double instruction cycle optimization models are verified by computer simulation and comparative experiments, respectively. The accuracy and effectiveness of the. Finally, In this paper, we study the optimization of platform-separated automatic access system under standing in situ standby locus strategy. In this paper, we first establish the dual instructions of platform-separated automatic access system under standing in situ standby locus strategy. Cycle walking time model, Then the accuracy of the double-instruction cycle walking time model is verified by computer simulation, and the two-instruction cycle walking time model established in this paper is compared with the single instruction cycle walking time model. The validity of the dual instruction cycle walking time model proposed in this paper is verified.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：F252.1

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本文編號(hào)：1520662