Man - hour method is an effectual approach to extend the sample database , and is applied when the number of the correlative samples is insufficient or a new sample is to be added 工時法是豐富樣本實例庫的一條有效途徑,當可供比較的樣本數(shù)目不多或為一個新工件建立其樣本實例時,就可以采用工時法進行估價。
Fifthly , the paper utilize the fuzzy mathematics principle to analyse model setting up , model discerning , fuzzy decision - making process of fuzzy mathematics , the conclusion is drawn that we appraised mould cost with fuzzy similar comparative method , with fuzzy mathematics the expert ' s behavior is simulated as well as the useful information is drawn lastly , the fuzzy similar appraisal mathematics model on basic of man - hour method is set up , the characteristic factors to describe automobile covering of mould and coefficient of influence factor to synthetically judge similar work are confirmed which raises the precision of price by mathematics foundation , work characteristic sureness , influence factor sureness , management of sample data , etc . of weight of factor of model , the paper set up more intact theoretical system of mould price estimate with fuzzy similar comparative method 建立了基于工時法的模糊相似評價數(shù)學模型,確定了描述汽車覆蓋件模具的特征因素;并確定了綜合評判工件相似性所用各影響因素的權重集合,提高了模具價格估計的精度。通過對數(shù)學模型的建立、工件特征因素的確定、影響因素權重的確定、樣本數(shù)據(jù)的管理等的研究,本文較完整的建立了利用模糊相似比較方法估算模具價格的理論體系。在分析模具報價流程和決策過程的基礎上,開發(fā)了汽車覆蓋件模具計算機輔助報價系統(tǒng),該系統(tǒng)安全、方便、準確。
Fourthly , set up the price theory model of the mould . combining the book of mould valuate method consult manual " and some actual conditions of mould factories , five kinds of methods : weight method ; man - hour method ; unit ' s weight method ; man - hour addition method ; similar comparative method are constructed and appraised 另外還建立了一些常用加工方法工時計算的數(shù)學模型;然后剖析了《模具計價辦法參考手冊》中的兩種估價方法,工時法和重量法;針對覆蓋件模具的特點,根據(jù)成都某模具廠的經驗建立了單位重量法和工時累加法的數(shù)學模型。
The development of the modern science and technology provides new methods and ideas to resolve these problems , such as fuzzy theory , forecasting technique , computer science , network technique , information technique , database technique , etc . this dissertation puts forward a fuzzy - similarity - comparison method complemented by man - hour method 模糊理論、預測技術、計算機技術、網絡技術、信息技術、數(shù)據(jù)庫技術等現(xiàn)代科學的發(fā)展,為這一問題的解決提供了新的思路和方法。