共查询到20条相似文献,搜索用时 62 毫秒
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分析了蝶阀密封结构的进展过程,运用TRIZ技术进化理论对蝶阀密封结构的进化路线进行了系统分析,并探索了未来蝶阀可能的密封结构状态。 相似文献
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基于TRIZ的液压缸移动密封的进化研究 总被引:1,自引:2,他引:1
TRIA的技术系统进化法则是进行产品创新开发的理沦基础。阐述了技术系统进化模式的最新研究成果和技术系统的进化潜能.对液压缸移动密封的进化路线作了系统的研究总结,并基于TRIZ的进化路线和进化潜能相互融合的方法探索了液压缸移动密封的进化潜能.为液压缸移动密封未来开发指明了方向。 相似文献
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介绍了金属密封球阀的结构及其特点.分析和研究了金属密封球阀用于高温流体介质替代闸阀、旋塞阀、截止阀、蝶阀的可行性和优越性,提出了推广金属密封球阀需解决的问题及方法。 相似文献
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为解决面向产品创新模糊前端的设想产生问题,针对产品进化与生物体进化具有相似性的特点,论述了需求进化系统和生物功能进化系统的组成,并将生物体功能进化系统用于描述产品功能进化的过程。建立了需求进化系统与生物体功能进化系统之间的界面,在两种系统集成的基础上,建立了面向模糊前端的未来需求拉动功能进化的产品创新设想产生过程模型。通过中药擦丸机创新设想的产生表明了该过程模型的可行性。 相似文献
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《Manufacturing Engineer》2002,81(1):21-23
The authors argue that the success of the Six Sigma business improvement initiative is more to do with 'way of life' than 'initiative'. They consider Six Sigma and Ethicon; Six Sigma in practice; influencing success 相似文献
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Open University March 1990 相似文献
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There are growing indications of a crisis in conventional methods of metrological assurance for measuring instruments with built-in self-checking. This paper offers an analysis, looking in the first instance at sensors. An analogy between biological and technical evolution is discussed. It is argued that the future will see intelligent sensors and measuring systems being mass produced with inbuilt metrological self-checking, as well as the transition to a new stage in the evolution of metrological assurance of sensors. 相似文献
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一种新的水平集进化模型 总被引:7,自引:2,他引:5
针对目前图像分割领域许多水平集进化模型需要不断重新初始化水平集函数,或需要图像的梯度信息来约束进化的问题,提出了一种带距离约束项的基于亮度信息的水平集进化模型IMDC(intensity-based model with distance constraint).该模型引入一个距离约束项作为内部能量来保证水平集函数始终不偏离符号距离函数(SDF),避免了进化过程中对水平集函数的不断初始化.同时,借鉴C-v模型的基本思想,采用图像的亮度信息而非梯度来构造模型的外部能量项,确保了零水平集曲线稳定地收敛于期望的图像特征点(如目标轮廓点).实验结果表明,本文提出的模型不仅有效地克服了传统模型需重新初始化或无法应对弱边缘特征这两大问题,而且具备全局最优分割的能力和较强的抗噪性能. 相似文献
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Data from living and extinct faunas of primitive vertebrates imply very different scenarios for the origin and evolution of the dermal and oral skeletal developmental system. A direct reading of the evolutionary relationships of living primitive vertebrates implies that the dermal scales, teeth, and jaws arose synchronously with a cohort of other characters that could be considered unique to jawed vertebrates: the dermoskeleton is primitively composed of numerous scales, each derived from an individual dental papilla; teeth are primitively patterned such that they are replaced in a classical conveyor-belt system. The paleontological record provides a unique but complementary perspective in that: 1) the organisms in which the skeletal system evolved are extinct and we have no recourse but to fossils if we aim to address this problem; 2) extinct organisms can be classified among, and in the same way as, living relatives; 3) a holistic approach to the incorporation of all data provides a more complete perspective on early vertebrate evolution. This combined approach is of no greater significance than in dealing with the origin of the skeleton and, combined with recent discoveries and new phylogenetic analyses, we have been able to test and reject existing hypotheses for the origin of the skeleton and erect a new model in their place. 相似文献
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风力发电机叶片损伤演化预测方法研究 总被引:1,自引:0,他引:1
根据风力发电机叶片的实际铺层和使用状况,以刚度退化模型为基础,发展了一个适合于风力发电机叶片的损伤演化模型,模型的基本思路是以单层板的刚度退化规律来预测整个叶片的损伤演化过程.对损伤过程进行了分析,给出了复合材料层合板刚度退化、内部损伤和损伤累积规律. 相似文献