If the norm is 1, you have a so-called unit quaternion ( just as you would have a unit vector ) 假如平均值為1,你就得到所謂的單位四元數(shù)(正象單位矢量)。
Draw these segments; then, for each segment, draw the same set of line segments transformed to use that segment as the unit vector 繪制這些區(qū)段之后,繪制同一套變形線條,用這個區(qū)段作為單位向量。
In the paper, based on the method of low pair replacing with high pair, the problem of cam design was transferred to that of linkage design . by means of rotary unit vectors, the equations of displacement, velocity and acceleration of the replacement mechanisms were developed . and then, the virtual linkage's length and direction were deduced 論文基于高副低代原理,將平面凸輪機構(gòu)設(shè)計與再現(xiàn)函數(shù)的平面連桿機構(gòu)設(shè)計統(tǒng)一為同一種方法,運用圓向量函數(shù)建立代換機構(gòu)的位移、速度、加速度矢量方程式,求取虛擬連桿桿長和方向,由此展開凸輪理論廓線、實際廓線、曲率半徑和壓力角的求解,并得出用圓形刀具加工凸輪時刀具中心的軌跡方程。