计算机软件与理论 算法,几种几何约束求解算法的分析-计算机软件与理论专业论文.docx...
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摘要
\f皴§援零熬發褒鞲殘矮瘩平范經袋為譽爨~個毽寡_辯技蠛代她鵜王渡瑗代 他慕平瀚萋贅褥洙之一。扶》羧鬣技術熬蹬璐,鷲爨上~器磺麓變疊億技術熬 蠖耀熬麓CAD技術戇發藩援袋了更大鶼空滔灝撬遴。舔死籜穩袋袋辯是參熬德 技術嗣變量純技術中艚熬要縋娥部分,閑而對于凡何約滾求解靜研究斑宥霞鬻
贍褒實意爻:V
零文蘺兜.介纓了CAD系統,包括CAD的歷史、現狀及發艘,然后舟紹了幾何 鶚寒求辯懣避懿鏊搴糕念,躉簿綏索揀瓣戇綦謄方法:羧滾莰數方法,蔣號代 數方法,邏轔接溪秘域麓霉投零秘基于麓熟擒逡方法。
贊越囂翦熟筏有羚系統孛,霄熹、線、幫、蕊霸辯之溺黲綴蒙,但鏷多翕 簿參爨鼴線熬戳約寨戇穩凝。零文霞鬼蔓要髏凌了翅德援一條煮遴二次8ezier 魁線的淶淹順靜連接兩條線段靜豇何鞠榮蠲瓣,使該二次Bezier盞殘滿足逶激 一令意纛、舄~條鬟凌穗留斌戮藎一蠢線戇爨燕是一定德。除了翅褥愆作瑟戇 方法_泉解決外,還撬如了用代數詩冀的方法卷解決。
零文還事鬻了懲簸德法塞解凌,您秘戇寒交勰逡戇熬方法。蘺受套緞了BFGS
方漫,并題渡方法寒麟次凡搿終漿黢祥瓣題,輟是掌熬豹運掰8溺冀法會使麴 寒慕解淤入弱釋簸爨瓣,囂褥掇入了爨蠢全藏器往靜瀵淹霧滾,提窶了耀混合 黲霞穗冀法慕辯捷A餐約采袋瓣邃戇,該法瓷終素求熬避程懿串毿羧掇鼴囂艘 鼗瓣秘麓題,避箍我霧《壘屠壤傀解。
一~、、《翅簸優法避器曩侮縫束袋鼴~審麓鼴懿僥贏跫箕零鑫藏鬈潦了簿過載豢鼗 欠約柬闋題鞠求解,囂缺點怒猩用混奮算法求解約束問題對,只能找到~個最 蕊解。為了麟凌這個閼髓,本文提窶了懋逮銨辣法慕辯決冗鼴懿寒袋勰辯囂, 并嗣瀵傳摸擻趲火舅淤找到崧嶷約柬漿{牛下豹多個聚優解。這個算泱彌補7灄
臺算法瓣幣楚,整多個鑲饒躲不篷夠程一次慕熬進程皆懣褥戮,秀了§£譙一次 求瓣避籜投裂鹱霄黲攮蕊瓣,彀入7棗艇壤逡捷冀瀅,磐把渡冀法庭爆列具撼 魏多辯瓣囂警中,攘好瓣解莰了蔑褥約黎求瓣闡蘧孛懿褥隸條棒下鷯多辯溺憨。礦7
關毽溺:蔑麓瓣漾,尼穗夔寒袋瓣,最德豫,滌舍翼滌,逮鼴辣洼。小蔓凌、\
塑翌杰翌堡:!監塞——————————————————————————。i墮Abstract
塑翌杰翌堡:!監塞——————————————————————————。i墮
Abstract
The status of application and development has been one of the important scales to measure the modernization of science and technology and industry of a nation. The development of CAD has been provided with wider stage and better opportunity from the emergence of the technology of parameter to the application of the
technology of variable.The geometric constraint solving has been all essential part
for the development of the technology of parameter and the technology of variable,
SO it is significant for researching On geometric constraint solving.
The thesis introduces the system of CAD at first including the history,the actuality and the development.And then the concept of the problem of geometric constraint solving and the basle four methods for solving this problem are brought in:
the method of algebra,the method of symbol algebra,the method of logical
inference and term rewriting and method ofgraphic construction.
Aiming at present systems,there are constraints among point
總結
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