【TED】是一个会议的名称，它是英文technology,entertainment, design三个单词的首字母缩写。它是社会各界精英交流的盛会，这里有当代最杰出的思想家，这里有当代最优秀的科学家，这里有迸发着最闪耀的思想火花，这里孕育着最光辉的梦想。
Péter Fankhauser :
Péter Fankhauser is the leader of a team of students working on Rezero, a robot that balances on a single sphere.

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【全文听写】
HINTS：
Rezero
constantly
toppling
axis
instability
dynamically
You might ask yourself, what's the usefulness of a robot that's unstable? Now we'll explain that in a second. Let me first explain how Rezero actually keeps his balance. Rezero keeps his balance by constantly measuring his pitch angle with a sensor. He then counteracts and avoids toppling over by turning the motors appropriately. This happens 160 times per second, and if anything fails in this process, Rezero would immediately fall to the ground. Now to move and to balance, Rezero needs to turn the ball. The ball is driven by three special wheels that allow Rezero to move into any direction and also move around his own axis at the same time. Due to his instability, Rezero is always in motion. Now here's the trick. It's indeed exactly this instability that allows a robot to move very [dynamically]. Let's play a little. You may have wondered what happens if I give the robot a little push. In this mode, he's trying to maintain his position.
你也许好奇，一个连站都站不稳的机器人 有什么用呢？ 稍后我回解释 首先先解释下它是如何 保持平衡的 Rezero通过一个传感器不停地检测倾斜度 来维持自身平衡 它将通过适量转动马达 来抵消倾斜的角度防止倾倒 这个过程每秒要进行160次 稍有差错 它就会立刻摔倒在地 要运动和平衡 Rezero就得转动球 这个球是由三个特殊的轮子驱动 从而它能在各个方向上运动 并同时能够 自转 由于其不稳定性，所以它必须一直处于动态 妙就妙在这里 正是这种不稳定性 赋予了它动态性 让我们看看 如果我推它一下 会有什么反应呢 这个模式下 它会尝试 回归原位