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A new passive wheel type of biped ice-skating robot(BISR)which was able to imitate human skating motion was developed. Firstly, the characteristics of two types of human skating gait were introduced; secondly, after simplifying the kinematical model, the BISR's motion principle was presented; then the construction and control system of BISR were proposed; at last, the skating experiment of the BISR in a symmetric gait mode was conducted and some conclusions were drawn. 相似文献
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从提高统计质量,做好违流统计,加快日处理旬上报系统的建设,提供多种统计服务及建立健全相关制度等方面对如何强化货运精密统计、服务铁路改革发展进行了论述。 相似文献
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研究了以(NH4)2S2O8—NaHSO3为引发剂,环氧氯丙烷为交联剂,淀粉和部分中和的丙烯酸(钾)、丙烯酰胺为原料进行交联接枝.在有氧状态和无氧状态下采用水溶液聚合法合成了高吸水性表面修复剂.在这两种状态下,比较了温度、引发剂用量对表面修复剂吸水率的影响,同时对单体混合物的温度变化进行了研究. 相似文献
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黄河JN162载货汽车,采用4×2的基本型式,后桥为驱动桥。桥壳是目前世界上产量最大的整体式冲压焊接结构。动力传动机构采用中央两级减速器,有全浮式渐开线花键的半轴和四行星锥齿轮的中央差速器。采用双级减速,目的在于提高传动比。此外,由于单级传动比的降低,可以减少各级齿轮的齿数,使减速器尺寸变小,从而增大了离地间隙。JN162汽车的双级减速器分别为:第一级,弧齿锥齿轮副,速比i_1= 相似文献
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