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针对采摘执行器在采摘过程中无法控制采摘压力导致水果受损的问题,设计一种基于TRIZ的矛盾冲突理论和物场模型的采摘执行器.通过TRIZ系统组件分析和功能模型进行问题分析,找出采摘执行器的有效功能和不足功能;运用TRIZ的技术冲突理论、物理冲突理论以及物场模型分析得出各种解决方案,经综合比较,最终运用分割原理方案实现执行器... 相似文献
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TRIZ理论在农业机械装备创新设计中的应用 总被引:1,自引:0,他引:1
介绍了发明问题解决理论-TRIZ的冲突概念和分类,分析了描述技术冲突的39个标准参数、40条发明原理、技术冲突解决矩阵及物质-场分析理论,并运用TRIZ理论对悬挂铧式犁和花生脱壳机两种农业机械装备产品进行具体研究,得出了快速创新设计的新方法。 相似文献
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传统精量播种机在播种过程中存在漏播、重播、播种效率低,以及工作稳定差等诸多问题,严重影响了播种作业的质量和农作物产量.为解决播种机的播种难题,引入TRIZ理论对精量播种机的功能进行创新设计,在深入研究分析TRIZ理论的基础上,将播种机存在的问题转化为矛盾矩阵,通过分析矛盾矩阵,完成播种机的冲突解决原理优化设计,并对播种... 相似文献
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针对扳手机械结构存在的缺陷,应用TRIZ理论进行创新设计。由TRIZ理论矛盾矩阵和40个发明原理,将实际问题转化为标准技术矛盾,找出对应发明原理。依据发明原理,结合工程实际,形成多种扳手创新设计方案,有效解决了扳手在使用中存在的问题。 相似文献
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本文针对马铃薯收获机切土装置工作过程中会切到马铃薯茎块和石块问题,通过运用TRIZ理论的物-场分析模型定义问题,找到问题解决方向;又通过TRIZ理论的技术矛盾找到相应创新原理,并根据创新原理给出的设计方向,提出合理解决方案。 相似文献
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为解决现有玉米根茬处理装置存在的问题,研究设计一种新型破茬装置。介绍破茬装置的工作原理及主要部件设计,分析主要工作部件的参数。正交试验结果表明,破茬装置的破茬合格率在91%以上,能够很好地满足设计要求。 相似文献
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《Journal of Agricultural Engineering Research》1998,69(3):249-254
A model to represent the discolouration of dried powder of carrots as a function of temperature was developed. Two types of carrots, Asian and European, containing large amount of lycopene and β-carotene, respectively, were tested. The dried powder was stored under an atmosphere with O2and at three different temperatures, 5,20 and 35°C. The surface colour of the powder was monitored during storage by a Hunter colour ratioa/b. In the proposed model, the rate of oxidation was assumed to be represented by the product of the fraction of concentration of oxidized pigment at arbitrary time and a specific rate of oxidation of pigment. The rate parameters in the proposed model were calculated by fitting the experimental data with smooth curves by trial and error at the end of the induction period but before discolouration took place. The frequency constant and activation energy, expressing the temperature dependence of the rate parameters, were expressed by the Arrhenius relation. The simulation results of a Hunter colour ratioa/bof dried powder at 25°C showed good agreement with the experimental data, suggesting that the proposed model was effective for the prediction of discolouration of dried powder of both types of carrot. The use of the induction period in the manner described may enable the shelf life of dried powder to be predicted. 相似文献
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The fractional outflow rate of water from the rumen, measured as the rate of disappearance of the chromium complex of ethylenediamine tetra-acetic acid, was related to a number of dietary factors. A multiple regression equation was derived which expressed fractional outflow rate as a function of the intakes of dry matter, ash, acid-detergent fibre and crude protein.The data analysed consisted of 243 observations for sheep on 59 diets, including forage, concentrate and mixed diets. The ranges covered by the data were: fractional outflow rate 0.7–3.6 day?1; dry matter intake 560–1400g/day; ash 4–30%, acid-detergent fibre 7–41%, crude protein 5–26 % of dry matter; there were no observations for sheep of less than 34 kg liveweight.The equation accounted for 56·3 % of the total variance. Between-sheep variance could not be calculated for the whole of the data but was undoubtedly substantial since, for a sixth of the data, it was known to account for 38 % of the total variance. 相似文献
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感官检验棉花的品级,这是农村常见的一种检测手段.它的一个主要特点就是存在不确定性.这是由于检验员的品级检验水平存在一定的差异,其中有很多因素制约着检验的结果.文章对影响感官检验结果的因素进行了系统的分析. 相似文献
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从灾害经济学的角度探讨了城镇供水优化调度的必要性和可能性,认为在缺水不可避免的情况下,对供水进行优化调度可以减小缺水带来的损失,产生较好的减灾效益,特别是可以大大减小严重干旱的灾害效应。并根据水资源的特性,提出了缺水损失的计算模式以及优化调度的原则和方法。 相似文献