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首页> 外文会议>American Society of Mechanical Engineers(ASME) Design Engineering Technical Conferences and Computers and Information in Engineering Conference 2004(DETC 2004) vol.2 pt B: Biennial Mechanisms and Robotics Conference; 20040928-1002; Salt Lake City,UT(US) >SPECIAL CASES OF INPUT SPEED DOUBLING LINKAGE MECHANISMS AND THEIR DYNAMICS ADVANTAGE
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SPECIAL CASES OF INPUT SPEED DOUBLING LINKAGE MECHANISMS AND THEIR DYNAMICS ADVANTAGE

机译：输入速度加倍链接机制的特殊情况及其动力学优势

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摘要

In a recent study, Rastegar, et al. (2003), presented a special class of planar and spatial linkage mechanisms in which far a continuous full rotation or continuous rocking motion of the input link, the output link undergoes two continuous rocking motions. In a special case of such mechanisms, for periodic motions of the input link, the output motion is periodic with a doubled fundamental frequency. The above class of linkage mechanisms were referred to as "speed-doubling" linkage mechanisms. Such mechanisms can be cascaded to further double the fundamental frequency (rocking motion) of the output motion. They can also be cascaded with other linkage mechanisms to obtain crank-rocker or crank-crank type of mechanisms. The conditions for the existence of "speed-doubling " linkage mechanisms were also provided. In this paper, a study of the dynamics of a "speed-doubling " linkage mechanism is presented. It is shown that such mechanisms have dynamic advantage over regular mechanisms designed to achieve similar output motions. The main advantage of such mechanisms is shown to be their lower peak input torque requirement, and that the required torque generally has lower amplitude high-frequency components. The speed-doubling mechanisms have practical applications, particularly when higher output speeds are desired, since higher output motions can be achieved with lower input speed's and smaller motors.
机译：在最近的研究中，Rastegar等人。 （2003年），提出了一类特殊的平面和空间连杆机构，其中输入连杆连续连续旋转或连续摇摆运动，输出连杆经历两次连续摇摆运动。在这种机制的特殊情况下，对于输入链接的周期性运动，输出运动是周期性的，具有两倍的基本频率。以上类型的链接机制被称为“倍速”链接机制。这些机制可以级联以进一步使输出运动的基本频率（摇摆运动）加倍。它们也可以与其他联动机构级联以获得曲柄摇杆或曲柄曲柄类型的机构。还提供了“速度加倍”链接机制的存在条件。在本文中，对“倍速”联动机构的动力学进行了研究。结果表明，与常规的机构相比，此类机构具有动态优势，而常规机构的设计旨在实现类似的输出运动。这样的机构的主要优点是其较低的峰值输入扭矩要求，并且所需的扭矩通常具有较低幅度的高频分量。倍速机构具有实际应用，特别是在需要更高输出速度时，因为可以在较低输入速度和较小电动机的情况下实现较高的输出运动。

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