【作者】 李静；

【导师】 张鹏；

【作者基本信息】 河北工业大学 ， 工程硕士（专业学位）， 2019， 硕士

【摘要】 随着科学技术发展,用户需求逐步提高,产品更新换代加剧,系统功能之间的关系更为紧密复杂,复杂系统相关研究成为当前热点之一。复杂系统具有强耦合性、时变性和非线性等特征,而强耦合性在复杂系统中更为突出,因此分析复杂系统中的耦合成为重要课题。目前大部分学者主要针对复杂系统中已经出现或在设计过程中出现的耦合进行研究,对复杂系统更新换代过程中可能出现的隐性耦合遗传问题没有过多关注。本文类比生物系统隐性遗传原理,分析复杂系统中的隐性耦合问题,从遗传角度分析复杂系统可能存在的遗传耦合问题,降低隐性耦合在系统更新换代过程中的影响。本文应用设计过程复杂性理论判断子代系统的复杂性类型,并结合TRIZ工具对复杂系统中的隐性耦合进行求解,防止隐性耦合的再次出现。通过分析异形工件抓取系统的特征,确定此系统可采用本课题的研究方法,并由此验证隐性耦合遗传机理的科学性。本文的主要研究内容如下:1、系统功能遗传基因的确定及融合过程研究。首先根据用户需求选取母本系统和父本系统,类比生物系统基因遗传机理将母本系统和父本系统进行功能分解。然后按照子代系统的功能需求裁剪亲代系统功能,利用物质-场分析裁剪后亲代系统功能的完整性,确定母本系统和父本系统功能遗传基因。最后将功能遗传基因进行有机融合初步形成子代系统。2、子代系统中隐性耦合的确定及消除。首先提取子代系统中功能元件的参数,标注子代系统参数来源,关注母本系统与父本系统到子代系统过程中隐性参数显性导致的耦合问题。本文将亲代系统功能遗传基因融合成子代系统的过程中,因其中参数相互作用导致的耦合称为隐性耦合。然后应用设计过程复杂性表征隐性耦合问题,并应用TRIZ进行隐性耦合求解,减小隐性遗传显性化的概率。最后确定子代系统的功能周期。3、以异形工件抓取系统为实例,结合本文所提理论对异形工件抓取系统进行问题定义与分析,确定异形工件抓取系统的设计方案,验证隐性耦合遗传机理的科学性。更多还原

【Abstract】 With the development of science and technology,the demand of users is gradually increasing,product updating is intensifying,and the relationship between system functions is more complex.The research on complex systems has become one of the current hot spots.Complex system becomes one of the research focus now.The complex system has many characteristics,it’s strong coupling,time variation and non-linear.Among the characteristics,strong coupling is more outstanding.So analyzing strong coupling of complex system becomes research focus.However,most scholars mainly to coupe which is appeared in complex system or design process.they ignored potential recessive coupling genetic in updating of complex system.The updating of complex system is similar with biological system genetic,and the organism is above complex system in complexity.This paper analogies recessive inheritance of biological system and recessive coupling of complex system and decrease the effects on updating recessive coupling in the system.In this paper,the design process complexity theory is applied to judge the complexity type of the descendant system,and the implicit coupling in the complex system is solved by TRIZ tool to prevent the recurrence of the implicit coupling.By analyzing the characteristics of the special-shaped workpiece grabbing system,it is determined that the system can adopt the research method of this subject,and the scientific mechanism of recessive coupling heredity is verified.The main contents of this paper are as follows:1.Study on the determination and fusion process of systemic functional genetics.Firstly,the parent system and the parent system are selected according to the user’s needs,and the genetic mechanism of the biological system is used to decompose the parent system and the parent system,cut the function of the parental system according to the functional requirements of the descendant system,and determine the functional genetics of the mother system and the parent system by using Sub-field analysis.Finally,the functional genetic gene was organically fused to form the offspring system.2.The determination and elimination of implicit coupling in the descendant system.Firstly,the parameters of the functional elements in the descendant system are extracted,the parameters of the descendant system are labeled,and the coupling problem caused by the explicit parameters of the parent system and the parent system to the descendant system is concerned.In this paper,the coupling of the parent system and the parent system from the functional heredity to the descendant system is called implicit coupling.The application of design process complexity is used to characterize the implicit coupling problem,and TRIZ is applied to solve the implicit coupling to reduce the probability of recessive genetic dominance.Finally,the functional period of the descendant system is determined.3.Taking the special-shaped workpiece grabbing system as an example,combined with the theory proposed in this paper to define and analyze the problem of the special-shaped workpiece grabbing system,determine the design scheme of the special-shaped workpiece grabbing system,and verify the scientific nature of the recessive coupling genetic mechanism.更多还原