对“用欧拉角描述人体髋关节运动”论点的商榷

Deliberation on the thesis about "describing hip joint motion of the human body with Euler angle"

目前有些专家、学者用欧拉角来描述髖关节的运动,然而,欧拉角的运用会出现数学计算上的困难,且所涉及的转轴与人体基本运动轴不一致。本文介绍了与人体运动轴较为相符,且又可避免欧拉角应用时数学计算困难的一种方法,即用布里恩角来描述人体髖关节的定点运动。

Euler angle is currently used to describe hip joint motion of the human body by some experts and scholars, but the difficulty in mathematical calculation will arise from the application of it,and the rotational axis dealed with will be different from the elementary movement axis of the human body. A new method, that is, describing the fixed-point motion of the human body's hip joint with Brion angle, which can bring the rotational, axis into correspondencce with the movement axis of the human body and avoid what will arise from the application of Euler angl to the description, has been introduced in this paper.