倒とう立りつ振ふり子ことうりつふりこMeanings1nouninverted pendulumTechnical term in physics and control engineering; refers to a pendulum with its center of mass above its pivot point.倒とう立りつ振ふり子この安あん定てい化か制せい御ぎょは、ロボット工こう学がくの基