物流配送客戶時間窗變動干擾管理研究

1、物流配送客戶時間窗變動干擾管理研究文章來源 畢業(yè)論文網(wǎng) study on disruption management for customer time window changes in logistics【中文摘要】 在物流配送過程中經(jīng)常發(fā)生的對正常物流配送產(chǎn)生干擾和不良影響事件中,有一類干擾是來自于顧客方面的不確定性,表現(xiàn)為顧客取消需求,新的顧客提出服務請求,顧客突然提出了提前或延后交貨、變動交貨地點或者改變了需求量等。該干擾事件的出現(xiàn)不僅改變了該顧客的配送計劃,還將對后續(xù)的顧客點產(chǎn)生連鎖影響,即該路徑上的所有剩余任務都將受到該干擾事件的影響。

2、對此,企業(yè)必須快速響應顧客需求改變,迅速制定出對應的調(diào)整方案,并希望在盡量降低對整個系統(tǒng)的擾動的前提下,使產(chǎn)生的費用增加最小。干擾管理作為一種實時處理干擾事件的方法論,主要針對經(jīng)常性干擾事件的處理和管理。本文正是基于干擾管理這一新理念,針對客戶時間窗變動問題擾動恢復模型及其算法進行了研究。本文的主要工作如下:(1)在對客戶時間窗變動干擾辨識的基礎(chǔ)上,對擾動進行了度量分析,考慮在途運力與資源,給出了車輛調(diào)度的擾動恢復策略及擾動度量方法。(2)根據(jù)本文所提出的擾動度量方法及擾動恢復策略,根據(jù)物流企業(yè)的實際情況,限定車場內(nèi)的車輛數(shù)目,采用混合時間窗,從設(shè)定虛擬單車場與虛擬多車場兩個角度,分別構(gòu)建了客

3、戶時間窗變動擾動恢復模型,這是本文研究的核心。(3)根據(jù)模型的特點與干擾管理思想,改進了基于客戶的編碼表示方法,構(gòu)造了相應的遺傳算法;并設(shè)計了一種新的約束處理方法。(4)設(shè)計了測試實驗,對本文提出的擾動恢復模型及算法的有效性進行了驗證。本文給出了客戶時間窗變動的擾動恢復策略,可以指導設(shè)計vrptw其他擾動恢復策略;通過設(shè)定虛擬單車場或虛擬多車場,將干擾發(fā)生在途車輛的起點復位到車場,使vrptw求解算法同樣可以用于處理擾動恢復模型;對客戶時間窗變動對系統(tǒng)造成的干擾進行了度量,為vrptw其他擾動度量提供了指導;設(shè)計了一種新的約束處理方法,避免了懲罰策略中選取懲罰因子的困難,使得約束處理問題簡單化

4、?！居⑽恼?on the background that frequent disruptions occur in the logistics,there is a kind of disruption,which iscaused by the request changes of customers,such as,new requests by the new customers,requests cancelling,service inadvance/lingeringly,and demand changes,and when they occur,not only the

5、customers disrupted are not serviced accordingto the plan,but also the customers in succession to them are affected.in practice,the adjustment plan must be madequickly to tackle request changes of customers,minimizing increased cost under the premise of the least disruption onthe original plan.as a

6、methodology of handling disruptions in real time,disruption management chiefly settles such kindof incidents that happens frequently.based on the concept of disruption management,the recovery model and its algorithmfor customer time window disruption are constructed.the main researches in this paper

7、 are as follows:(1)based onidentifying the customer time window disruption,the deviation measurement is analyzed,and the recovery strategy for thecustomer time window disruption is proposed.(2)on the basis of the methods of deviation measurement and recoverystrategy,the recovery model for customer t

8、ime window disruption is constructed respectively,from setting the singledummy depot and the multiple dummy depots.this is the core of the paper.(3)according to the characteristic of the modeland the disruption management,the chromosome code based on customer is ameliorated,the genetic algorithm is given,and anew handling constraint method based on genetic algorithm is designed.(4)the testing experiment is designed,to validatethe recovery model and its algorithm for customer time window disruption.the recovery strategy for