綜合調(diào)度數(shù)據(jù)存儲方式的研究
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本文關(guān)鍵詞:綜合調(diào)度數(shù)據(jù)存儲方式的研究 出處:《哈爾濱理工大學(xué)》2012年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 調(diào)度 數(shù)據(jù)存儲 鄰接矩陣 動態(tài)綜合調(diào)度 復(fù)雜柔性綜合調(diào)度
【摘要】:目前對調(diào)度問題的研究大多著眼于調(diào)度算法的調(diào)度結(jié)果更優(yōu)和算法復(fù)雜度更低,雖然降低算法復(fù)雜度可以提高調(diào)度效率,但是被處理數(shù)據(jù)的存取速度也影響調(diào)度效率;另一方面,當(dāng)調(diào)度問題的信息量較大時,處理問題數(shù)據(jù)所占用的空間也是需要考慮的問題。 針對一般綜合調(diào)度問題提出的調(diào)度算法,本文提出了提高一般綜合調(diào)度系統(tǒng)數(shù)據(jù)存取效率的方法:一般綜合調(diào)度數(shù)據(jù)存儲方法。該方法為每一個加工設(shè)備建立鄰接矩陣,并為所有的鄰接矩陣設(shè)計了順序存儲結(jié)構(gòu)和鏈?zhǔn)酱鎯Y(jié)構(gòu)相結(jié)合的線鏈?zhǔn)酱鎯Y(jié)構(gòu),以減少數(shù)據(jù)存儲所占空間并提高數(shù)據(jù)的訪問速度,同時,設(shè)計了矩陣路徑法,可通過有限次數(shù)的矩陣路徑運算,迅速獲得加工樹模型的所有路徑及路徑長度,,降低基于擬關(guān)鍵路徑法的綜合調(diào)度算法的運算時間。 在一般綜合調(diào)度數(shù)據(jù)存儲方法研究的基礎(chǔ)上,針對動態(tài)復(fù)雜綜合調(diào)度問題,進一步提出了動態(tài)復(fù)雜綜合調(diào)度數(shù)據(jù)存儲方法。在內(nèi)存中開辟一動態(tài)存儲區(qū),用于動態(tài)存儲當(dāng)前未加工工序和新到產(chǎn)品工序信息,這樣隨著產(chǎn)品加工的進行,動態(tài)縮小了數(shù)據(jù)存儲規(guī)模,節(jié)約了存儲空間,提高數(shù)據(jù)的存取效率。同時,考慮到對所有產(chǎn)品統(tǒng)一存儲并調(diào)度以保證產(chǎn)品加工的并行性,設(shè)計了基于動態(tài)鄰接矩陣存儲的工序名調(diào)整策略,使新產(chǎn)品與剩余產(chǎn)品按統(tǒng)一形式存入動態(tài)鄰接矩陣中并同時處理。 最后,針對目前一般綜合調(diào)度存儲方法的研究中,沒有考慮工序間存在特殊約束關(guān)系和工序可選加工設(shè)備不唯一的情況,使得調(diào)度存儲空間和調(diào)度時間需求較多的問題,提出了復(fù)雜柔性綜合調(diào)度數(shù)據(jù)存儲方法。該方法依據(jù)柔性加工問題的簡化策略,確定工序唯一加工設(shè)備,以設(shè)備名命名的鄰接矩陣分組存儲工序信息;設(shè)置虛擬設(shè)備鄰接矩陣存放設(shè)備無關(guān)延遲工序和固定延遲工序;設(shè)置指針表示工序緊密銜接關(guān)系。該方法合理的表示復(fù)雜問題柔性綜合調(diào)度問題的數(shù)據(jù)結(jié)構(gòu),加快了數(shù)據(jù)的存取速度、降低了數(shù)據(jù)的存儲空間。
[Abstract]:At present , most researches on scheduling problem focus on scheduling algorithm scheduling results and lower complexity , while reducing the complexity of the algorithm can improve the scheduling efficiency , but the access speed of the processed data also affects the scheduling efficiency ; on the other hand , when the amount of information of the scheduling problem is large , the space occupied by the processing problem data is also a problem to be considered . In order to reduce the occupied space of data storage and improve the access speed of data , the paper designs a matrix path method , which can quickly obtain all the paths and the path length of the processing tree model and reduce the computation time of the comprehensive scheduling algorithm based on the quasi - critical path method . On the basis of the research of general comprehensive scheduling data storage method , a dynamic complex comprehensive scheduling data storage method is proposed for dynamic complex integrated scheduling problem . A dynamic storage area is opened up in memory to dynamically store the current unprocessed process and new product process information . As the product processing progresses , the data storage size is reduced dynamically , the storage space is saved , and the access efficiency of data is improved . Finally , in the research of the general comprehensive scheduling storage method , there is no special constraint relation between the working procedures and the fact that the process alternative processing equipment is not unique , so that the scheduling storage space and the scheduling time need more problems , and the complex flexible comprehensive scheduling data storage method is proposed . According to the simplification strategy of the flexible processing problem , the process unique processing equipment is determined , the device name is named as the neighborhood matrix grouping storage process information , the setting pointer represents the close connection relation of the process , the method reasonably represents the data structure of the flexible comprehensive scheduling problem of complex problems , and the access speed of the data is accelerated , and the storage space of the data is reduced .
【學(xué)位授予單位】:哈爾濱理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TP333
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