排序方式: 共有22条查询结果,搜索用时 15 毫秒
1.
2.
本文分析了具有急回运动的曲柄滑块机构工作行程的最佳传力条件,同时给出了优化工作行程与空回行程最小传动角γwmin和γmin的参数、设计公式和图表。为曲柄滑块机构传力性能的最佳设计提供了依据。 相似文献
3.
本文应用赫兹(Hertz)弹性接触变形理论,以及有限元方法,分析了直线滚动导轨考虑滑块体弹性变形时的工作机理,即物理关系和几何关系,导出了承受垂直载荷时的刚度计算方法,并通过实验验证了本计算方法的有效性. 相似文献
4.
本文研究了2K—H型负号机构的滑动系数u_k并推出其计算公式,利用滑动系数曲线对行星、定轴齿轮传动进行了分析比较。 相似文献
5.
李奇 《东莞理工学院学报》1998,5(1):38-41
本文利用双滑尺的接长方法,探讨了机床数显改造中的定尺接长问题。结果表明,所用方法可降低定尺接长中的安装误差,提高机床数显改造中的精度。 相似文献
6.
7.
本文介绍了紧急制动的作用,分析了上海地铁3号线地铁车辆所用KBWB制动系统空气制动控制单元的组成和工作原理,着重论述了该制动系统在紧急制动时的工作过程以及紧急制动时如何防止轮对滑行。 相似文献
8.
朱从鉴 《上海理工大学学报》1993,(4)
本文分析了皮带传动中与弹性滑动有关的几个问题.导出了弹性滑动的大小、平均速度和最大速度诸公式,分析了弹性滑动对传动比和传动效率的影响. 相似文献
9.
Cooperative communication networks have been studied and analyzed for many years for enhancing system performance, capacity, and reducing interference with the least focus on handover in cooperative commu- nication scenarios. This paper focuses on trial field testing system for evaluating the proposed handover scheme called slide handover (HO). An automatic power allocation technique is coupled with slide HO scheme and its per- formance is also evaluated under cooperative networks. Our proposed scheme has achieved 100 % successful HO executions in our field trial system. Block error rate (BLER) and slide HO are tested and analyzed in this trial system, and it is shown that the capacity of cooperative networks in these trials implementation has improved and maintained the expected quality of service. BLER below 1% is noted at different testing locations which occa- sionally reached to 10 %. Real-time video streaming per- formance is tested at different trial locations, and uniform streaming performance is noted at all different locations including during the HO process. This implies the improved HO delay of the proposed slide HO as compared to traditional HO techniques. 相似文献
10.