本文選題：機(jī)械旋轉(zhuǎn)對(duì)稱(chēng)性 + 概念體系��； 參考：《浙江大學(xué)》2012年碩士論文

【摘要】：對(duì)稱(chēng)性廣泛存在于機(jī)械領(lǐng)域中,鏡射對(duì)稱(chēng)性、旋轉(zhuǎn)對(duì)稱(chēng)性和平移對(duì)稱(chēng)性是三大基本對(duì)稱(chēng)性。本文聚焦旋轉(zhuǎn)對(duì)稱(chēng)性,搜集了大量設(shè)計(jì)實(shí)例,在實(shí)例標(biāo)準(zhǔn)化分析的基礎(chǔ)上應(yīng)用知識(shí)挖掘方法研究了機(jī)械旋轉(zhuǎn)對(duì)稱(chēng)性在機(jī)械中的存在方式和作用機(jī)理,主要研究?jī)?nèi)容及成果體現(xiàn)在以下四個(gè)方面： (1)建立了機(jī)械結(jié)構(gòu)旋轉(zhuǎn)對(duì)稱(chēng)性概念體系。借鑒課題組機(jī)械對(duì)稱(chēng)和機(jī)械對(duì)稱(chēng)破缺的研究成果,在實(shí)例分析的基礎(chǔ)上提出了機(jī)械結(jié)構(gòu)旋轉(zhuǎn)對(duì)稱(chēng)性的分類(lèi)方法,建立了包含基本旋轉(zhuǎn)對(duì)稱(chēng)、旋轉(zhuǎn)復(fù)合對(duì)稱(chēng)、旋轉(zhuǎn)多對(duì)稱(chēng)和旋轉(zhuǎn)對(duì)稱(chēng)破缺等類(lèi)型的機(jī)械結(jié)構(gòu)旋轉(zhuǎn)對(duì)稱(chēng)性的概念體系。 (2)提出了改進(jìn)的Eclat關(guān)聯(lián)規(guī)則挖掘算法。為了克服課題組前期提出的比較模式映射關(guān)聯(lián)規(guī)則挖掘算法(CPM算法)事務(wù)空間伸縮性不佳的缺點(diǎn),提出了改進(jìn)的Eclat關(guān)聯(lián)規(guī)則挖掘算法——Eclat_opt算法。與其它Eclat改進(jìn)算法和CPM算法的對(duì)比實(shí)驗(yàn)表明,Eclat_opt算法適用的數(shù)據(jù)集類(lèi)型范圍較廣、運(yùn)行效率較高,在事務(wù)空間和支持度空間上的伸縮性較好,對(duì)于當(dāng)前及以后特征參數(shù)可能發(fā)生變化的機(jī)械對(duì)稱(chēng)性實(shí)例數(shù)據(jù)庫(kù)都具有很強(qiáng)的適用性。 (3)機(jī)械旋轉(zhuǎn)對(duì)稱(chēng)性知識(shí)挖掘與應(yīng)用。從知識(shí)挖掘的一般步驟出發(fā)給出了機(jī)械對(duì)稱(chēng)性知識(shí)挖掘中的數(shù)據(jù)準(zhǔn)備、數(shù)據(jù)挖掘以及結(jié)果解釋和評(píng)估的流程,采用Eclat_opt算法挖掘了機(jī)械旋轉(zhuǎn)對(duì)稱(chēng)性與設(shè)計(jì)需求、設(shè)計(jì)原理和設(shè)計(jì)準(zhǔn)則之間的關(guān)聯(lián)知識(shí),重點(diǎn)分析了其中支持度和置信度較高的關(guān)聯(lián)知識(shí),歸納了若干旋轉(zhuǎn)對(duì)稱(chēng)性在機(jī)械設(shè)計(jì)中的效用的應(yīng)用知識(shí)并給出一個(gè)設(shè)計(jì)實(shí)例。 (4)開(kāi)發(fā)了計(jì)算機(jī)輔助機(jī)械對(duì)稱(chēng)性知識(shí)挖掘與應(yīng)用的軟件平臺(tái)。在上述理論和課題組前期開(kāi)發(fā)的機(jī)械對(duì)稱(chēng)實(shí)例知識(shí)挖掘(KDDMSI)原型系統(tǒng)的基礎(chǔ)上繼續(xù)開(kāi)發(fā)了機(jī)械對(duì)稱(chēng)性知識(shí)挖掘與應(yīng)用系統(tǒng)(MSKMAP),改進(jìn)了原系統(tǒng)的實(shí)例管理模塊和知識(shí)挖掘模塊,增強(qiáng)了實(shí)例分析、錄入和導(dǎo)出的靈活性,以及知識(shí)挖掘的多樣性和用戶友好性。
[Abstract]:Symmetry widely exists in the field of machinery, mirror symmetry, rotation symmetry and translation symmetry are three basic symmetries. In this paper, we focus on rotational symmetry, collect a large number of design examples, and apply knowledge mining method to study the existence and mechanism of mechanical rotational symmetry in machinery on the basis of case standardization analysis. The main research contents and achievements are as follows: (1) the concept system of rotating symmetry of mechanical structure is established. Based on the research results of mechanical symmetry and mechanical symmetry breaking, the classification method of rotating symmetry of mechanical structure is put forward on the basis of example analysis, and the basic rotational symmetry and rotating compound symmetry are established. The concept system of rotational symmetry of mechanical structures such as rotation-polysymmetry and rotation-symmetric breaking is presented. (2) an improved algorithm for mining Eclat association rules is proposed. In order to overcome the disadvantage of poor scalability in transaction space of the association rule mining algorithm of comparative pattern mapping (CPM), an improved Eclat association rule mining algorithm named EclatStat opt algorithm is proposed. Compared with other improved Eclat algorithm and CPM algorithm, the experimental results show that the Eclatopt algorithm is suitable for a wide range of data sets, high efficiency, and good scalability in transaction space and support space. It is very applicable to the case database of mechanical symmetry, which may change the characteristic parameters. (3) knowledge mining and application of mechanical rotational symmetry. Starting from the general steps of knowledge mining, the data preparation, data mining, result interpretation and evaluation flow of mechanical symmetry knowledge mining are given, and the mechanical rotation symmetry and design requirements are mined by using Eclatopt algorithm. The relevance knowledge between the design principle and the design criterion is analyzed, and the correlation knowledge with high degree of support and confidence is analyzed. In this paper, some applied knowledge of the utility of rotational symmetry in mechanical design is summarized and a design example is given. (4) A software platform for computer-aided knowledge mining and application of mechanical symmetry is developed. On the basis of the above theory and the prototype system of mechanical symmetry case knowledge mining (KDDMSI) developed by the research group, a mechanical symmetry knowledge mining and application system (MSKMAP) is developed, which improves the case management module and knowledge mining module of the original system. The flexibility of case analysis, input and export, diversity and user friendliness of knowledge mining are enhanced.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH12;TP311.13

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 吳惠彬,張迎戰(zhàn);機(jī)械裝配中的對(duì)稱(chēng)群方法[J];北京理工大學(xué)學(xué)報(bào);2005年10期

2 胡義嘎;;物理學(xué)中的對(duì)稱(chēng)美及其對(duì)稱(chēng)性研究[J];赤峰學(xué)院學(xué)報(bào)(自然科學(xué)版);2011年08期

3 胡明;唐培麗;許建潮;;基于OLAP的多維關(guān)聯(lián)規(guī)則挖掘研究[J];東北師大學(xué)報(bào)(自然科學(xué)版);2007年04期

4 周全法;;晶體的五次旋轉(zhuǎn)對(duì)稱(chēng)[J];大學(xué)化學(xué);1993年04期

5 劉兆龍;胡海云;;準(zhǔn)晶的發(fā)現(xiàn)[J];大學(xué)物理;2011年07期

6 莊欠偉,龔國(guó)芳,楊華勇,周華;盾構(gòu)液壓推進(jìn)系統(tǒng)結(jié)構(gòu)設(shè)計(jì)[J];工程機(jī)械;2005年03期

7 白愛(ài)民;沈江;徐曼;楊人圣;;數(shù)據(jù)挖掘在工程機(jī)械產(chǎn)品設(shè)計(jì)評(píng)價(jià)中的應(yīng)用[J];工程機(jī)械;2006年09期

8 馮培恩;劉偉平;馬友才;李立新;;機(jī)械制造工藝對(duì)稱(chēng)性的概念體系及其應(yīng)用思路[J];工程設(shè)計(jì)學(xué)報(bào);2010年03期

9 王巖;;數(shù)據(jù)挖掘領(lǐng)域探索[J];硅谷;2010年05期

10 周汝忠;杜全興;張繼儀;;不等齒距端銑刀的結(jié)構(gòu)優(yōu)化及性能試驗(yàn)[J];工具技術(shù);1992年01期

相關(guān)碩士學(xué)位論文 前2條

1 李志萍;鏡射對(duì)稱(chēng)在機(jī)械中的作用原理及其應(yīng)用方法研究[D];浙江大學(xué);2010年

2 劉偉平;機(jī)械結(jié)構(gòu)對(duì)稱(chēng)破缺的概念、作用及其應(yīng)用[D];浙江大學(xué);2012年

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