3.1 可行性验证
3.1.1 一维 one-dimensional 在 pvc 板上钻洞，形成齿轮架，安置两组相互咬合 的齿轮，通过硬杆与邻组齿轮相连，形成一个单向 的平面节点。通过手力同时驱动两组齿轮，可使齿 轮顺畅转动，硬杆在其中流畅开合。 Drill holes on the PVC board to form the gear shelf. Place two groups of mutually engaged gears, and connect them with the adjacent group through the hard rod, forming a one-way plane node. Drive two sets of gears together, they can rotate smoothly.
3.1.2 二维 two-dimensional 增设另一个方向上的一组相互咬合的齿轮，同样通 过硬杆连接，形成两个方向上的平面节点。通过手 力驱动三组齿轮，可使齿轮顺畅转动，硬杆在其中 流畅开合。 Add another group of gears to be a plane node in two directions. Drive three sets of gears, they can rotate smoothly.
3.1.3 三维 three-dimensional 将平面上的实验拓展到三维层面，下层齿轮仅通过硬杆横向 连接，上层纵向连接，形成一个 2*2*2 的空间节点。通过手 力驱动下层的四组齿轮，可带动上层齿轮一同转动。但用力 较大，齿轮转动受到巨大阻尼，硬杆开合不够流畅。 Expand the experiment to three-dimensional level, and the lower gears are connected transversely while the upper are connected longitudinal to form a 2*2*2 space nodes form. By drive the lower four groups, the upper can rotate together. But with greater damping, they are hard to move, and the hard rods can’t move smoothly.
3.2 实验与改进
3.2.2
若两组齿轮间只有一根硬杆使之相连，只对一组齿轮施力，另一
在转过最远处时，被带动齿轮会无法转过，而反向形成一个来回
象在平面上的四组齿轮的试验中更加明显，当只对一组齿轮施力时
针对这种运动传导逐渐减弱的现象，我们试图通过两个硬杆的连
相互咬合的一组齿轮，通过两个齿轮间的互相牵制，促使它们都能 If two groups of gears are only connected by a hard rod, one
while force on another group. Therefore, when the gear is tur
will not turn, and the reverse will form a turning motion, and t phenomenon is more obvious in the test of four sets of gears on
gears are applied, the diagonal gear has a very small amplitude
weakened phenomenon, we try to use two rod connection to sol
meshing with each other with two rigid rod through two gears co able to perform a complete rotation.
3.2.1 在可行性验证的试验中，还暴露出原使用的现成齿轮的问题。由于该齿轮 的尺寸相对较小，造成硬杆开合的变化也就不够明显。为了使得硬杆的开 合更加剧烈，以增大“心脏”的跳动效果，需要偏心洞与齿轮中心的距离 更大，因为我们选择定制尺寸较大的齿轮。 The gears we used at first is comparative small, which means the open and close of hard rods will not be obvious. To show a exquisite bumping condition of heart, we decide to custom bigger size gears to realize a longer eccentric distance.
一组齿轮随之转动相对滞后。因而
回转的动态，运动幅度更小。该现
时，其对角线的齿轮运动幅度极小。
连接来解决，用两个硬杆推动两个
能完成完整地转动。 group of gears will rotates later
rned far away, the driven gear
the motion range is smaller. This the plane. When only a group of
e. The motor conduction gradually
lve, to promote a set of two gears
ontain each other, make they are
3.2.3 由于亚克力过于通透，从正面看去，硬杆几 乎完全隐于背景中。为了凸显出硬杆的存在， 以反映其运动轨迹，我们选择与该模型气质 相合蕾丝胶带贴在硬杆上，并仅选择每组两 根中的一根交替贴上，使其运动的展现更加 灵动有趣。 Because the acrylic is too transparent, from the front view, hard poles almost completely hidden in the background. In order to highlight the hard rod, to reflect its trajectory, we choose the model with identical temperament tape affixed to the hard lace bar, and select only one of the two groups of alternate paste, make the movement more vivid and interesting.
3.2.4 在拨动一组齿轮，使其通过硬杆传动时，硬杆有时会在亚克力棒上滑动，使得亚克力棒 发生倾斜，传动受阻。针对硬杆滑动的现象，我们用小环固定在亚克力棒上，以限制住 硬杆的滑动范围，使得硬杆的传动得以顺利进行。 When a group of gears are pulled and driven by hard rod, the hard rod sometimes slides on the acrylic bar, so that the acrylic stick is inclined and the transmission is blocked. We use small rings to fix on the acrylic rods to limit the sliding range of hard rod, then the rod hard can move smoothly.