堂鋈点堂堡主!鲢
堂鋈点堂堡主!鲢一———————————————————————i量墼
摘要
＼f皴§援零熬发褒鞲残矮瘩平范经袋为誉爨～个毽寡_辩技蠛代她鹈王渡瑗代 他慕平瀚萋赘褥洙之一。扶》羧鬣技术熬蹬璐，鹫爨上～器磺麓变叠亿技术熬 蠖耀熬麓CAD技术戆发藩援袋了更大鹣空滔灏撬遴。舔死箨稳袋袋辩是参熬德 技术嗣变量纯技术中艚熬要缒娥部分，闲而对于凡何约滚求解静研究斑宥霞鬻
赡褒实意爻：V
零文蓠兜．介缨了CAD系统，包括CAD的历史、现状及发艘，然后舟绍了几何 鹗寒求辩懑避懿鏊搴糕念，趸簿绥索拣瓣戆綦誊方法：羧滚莰数方法，蒋 代 数方法，逻辚接溪秘域麓霉投零秘基于麓熟擒逡方法。
赞越嚣翦熟筏有羚系统孛，霄熹、线、帮、蕊霸辩之溺黪缀蒙，但镤多翕 簿参爨鼹线熬戳约寨戆稳凝。零文霞鬼蔓要髅凌了翅德援一条煮遴二次8ezier 魁线的涞淹顺静连接两条线段静豇何鞠荣蠲瓣，使该二次Bezier盏残满足逶激 一令意纛、舄～条鬟凌穗留斌戮荩一蠢线戆爨燕是一定德。除了翅褥愆作瑟戆 方法_泉解决外，还撬如了用代数诗冀的方法卷解决。
零文还事鬻了惩簸德法塞解凌，您秘戆寒交勰逡戆熬方法。蓠受套缎了BFGS
方漫，并题渡方法寒麟次凡搿终浆黢祥瓣题，辍是掌熬豹运掰8溺冀法会使麴 寒慕解淤入弱释簸爨瓣，嚣褥掇入了爨蠢全藏器往静瀵淹雾滚，提窭了耀混合 黪霞穗冀法慕辩捷A餐约采袋瓣邃戆，该法瓷终素求熬避程懿串毵羧掇鼹嚣艘 鼗瓣秘麓题，避箍我雾《垒屠壤傀解。
台算法瓣币楚，整多个镶饶躲不篷够程一次慕熬进程皆懑褥戮，秀了§￡谯一次 求瓣避箨投裂鹱霄黪攮蕊瓣，彀入7枣艇壤逡捷冀滢，磐把渡冀法庭爆列具撼 魏多辩瓣嚣警中，攘好瓣解莰了蔑褥约黎求瓣阐蘧孛懿褥隶条棒下鹩多辩溺憨。矿7
关毽溺：蔑麓瓣漾，尼穗夔寒袋瓣，最德豫，涤舍翼涤，逮鼹辣洼。小蔓凌、＼
塑翌杰翌堡：!监塞——————————————————————————。i堕Abstract
塑翌杰翌堡：!监塞——————————————————————————。i堕
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
文章知识点与官方知识档案匹配，可进一步学习相关知识算法技能树首页概览34297 人正在系统学习中 相关资源：渣浆泵的计算机选型软件及应用.rar-制造文档类资源-CSDN文库
声明：本站部分文章及图片源自用户投稿，如本站任何资料有侵权请您尽早请联系jinwei@zod.com.cn进行处理,非常感谢！