【正文】 o modify the algorithm of intermediate values (achieve predetermined precision scope), to achieve accurate forecast and calculation purposes. Thereby resolving the precise forecast to raise the economic benefits of The Holding Cold AirConditioning. Key words: Holding Cold AirConditioning； artificial neural work； BP algorithms；forecast 華東交通大學(xué)畢業(yè)設(shè)計(jì) 目 錄 1 引言 ..................................................................................... 1 蓄冷空調(diào)實(shí)時(shí)控制概述 .............................................................................. 1 人工神經(jīng)網(wǎng)絡(luò)概述 ..................................................................................... 2 神經(jīng)網(wǎng)絡(luò)的學(xué)習(xí)機(jī)理和機(jī)構(gòu) ........................................................................ 2 反向傳播 BP 模型 ...................................................................................... 4 BP 算法的數(shù)學(xué)表達(dá) .................................................................................... 6 神經(jīng)網(wǎng)絡(luò)的優(yōu)缺點(diǎn) ..................................................................................... 7 C++語言概述及 VC++開發(fā)環(huán)境 ................................................................... 8 C++對(duì)面 向?qū)ο蟪绦蛟O(shè)計(jì)方法的支持 ........................................................... 9 使用 C++的原因 ....................................................................................... 10 VC++開發(fā)環(huán)境 ..........................................................................................11 SQL SEVER 數(shù)據(jù)庫 .................................................................................... 12 2 系統(tǒng)概論 ............................................................................ 15 設(shè)計(jì)“蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng)”的意義 ......................................... 15 設(shè)計(jì)“蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng) ”的目的 ......................................... 15 設(shè)計(jì)“蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng)”要達(dá)到的功能要求 ..................... 15 設(shè)計(jì)“蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng)”的指導(dǎo)思想 ................................. 15 設(shè)計(jì)該系統(tǒng)所要解決的主要問題 ............................................................ 15 3 系統(tǒng)需求分析 ..................................................................... 16 系統(tǒng)目標(biāo) ................................................................................................... 16 華東交通大學(xué)畢業(yè)設(shè)計(jì) 開發(fā) ........................................................................................................... 16 功能需求分析 ........................................................................................... 16 其他需求 ................................................................................................... 16 4 概要設(shè)計(jì) ............................................................................ 17 任務(wù)概述 ................................................................................................... 17 系統(tǒng)總體設(shè)計(jì) ........................................................................................... 17 系統(tǒng)模塊設(shè)計(jì) ........................................................................................... 18 主控模塊設(shè)計(jì) ......................................................................................... 18 算法模塊設(shè)計(jì) ......................................................................................... 19 預(yù)測(cè)模塊設(shè)計(jì) ......................................................................................... 20 功 率計(jì)算模塊設(shè)計(jì) .................................................................................. 20 數(shù)據(jù)庫模塊設(shè)計(jì) ...................................................................................... 22 5 詳細(xì)設(shè)計(jì) ............................................................................ 26 設(shè)計(jì)要求 ................................................................................................... 26 模塊設(shè)計(jì)描述 ............................................................................................ 26 算法模塊 ................................................................................................. 26 預(yù)測(cè)模塊和功率計(jì)算模塊 ......................................................................... 30 數(shù)據(jù)操作模塊 .......................................................................................... 31 6 調(diào)試與運(yùn)行結(jié)果 ................................................................... 35 參考文獻(xiàn) ............................................................................... 39 謝辭 ...................................................................................... 40 華東交通大學(xué)畢業(yè)設(shè)計(jì) 附錄 ...................................................................................... 41 附錄 A 外文翻譯－原文部分 ........................................................................... 41 附錄 B 外文翻譯－譯文部分 ........................................................................... 47 華東交通大學(xué)畢業(yè)設(shè)計(jì) 1 1 引言 蓄冷空調(diào)實(shí)時(shí)控制概述 蓄冷空調(diào)的逐時(shí)預(yù)測(cè)在實(shí)時(shí)控制，節(jié)約能源和可靠運(yùn)行方面起著重要作用。一是對(duì)未來一天外界環(huán)境參數(shù)及空調(diào)負(fù)荷的預(yù)測(cè)；二是根據(jù)當(dāng)前時(shí)刻及外界參數(shù)計(jì)算負(fù)荷。這一點(diǎn)在蓄冷空調(diào)系統(tǒng)中尤為重要，因?yàn)槊刻焱砩闲畋康亩嗌賹⒅苯佑绊懙诙煺麄€(gè)系統(tǒng)的工作效率，并且是提高蓄冷空調(diào)系統(tǒng)經(jīng)濟(jì)效益的重要途徑之一。 華東交通大學(xué) 畢業(yè)設(shè)計(jì)（論文） 題目： 蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng) Load predicting system of The Holding Cold AirConditioning when chasing 摘要 蓄冷空調(diào)逐時(shí)負(fù)荷預(yù)測(cè)系統(tǒng)設(shè)計(jì) 近幾年來，隨著國家經(jīng)濟(jì)的不斷發(fā)展，國家電力的負(fù)擔(dān)越來越大。如果能夠精確的預(yù)測(cè)建筑物的動(dòng)態(tài)冷負(fù)荷，不僅可以更準(zhǔn)確的幫助設(shè)計(jì)人員完成設(shè)計(jì)，更可以使設(shè)備控制人員根據(jù)預(yù)測(cè)的冷負(fù)荷確定系統(tǒng)的控制時(shí)間、方式以及盡早發(fā)現(xiàn)系統(tǒng)故障。主要實(shí)現(xiàn)兩大塊功能。 關(guān)鍵字：蓄冷空調(diào)；人工神經(jīng)網(wǎng)絡(luò)； BP 算法；預(yù)測(cè) Abstract Load predicting system of The Holding Cold AirConditioning when chasing In recent years, The national power more and more burdener with the constant development of the national economy. The Holding Cold AirConditioning have increasingly broad applications in our country by the advocacy of national saving society. How to effective use of The Holding Cold AirConditioning, to ensure how much ice is store on the next day? At that time, it was very much like to be able to predict the next day the load of Holding Cold AirConditioning. If we can accurately predict the dynamics of the cold load building, not only can help the designers more accurate pletion of the design, but