This paper gives the definition of coordinate systems usually used in DVE, which are geocentric coordinate system, geodetic coordinate system, topology coordinate system, entity coordinate system and euler angle, then deduces the conversions among them. 该文给出了DVE中常用的坐标系统,地心坐标系、测地坐标系、拓扑坐标系、实体坐标系(ECS)和欧拉角定义,并推导了它们之间的转换公式。
According to the entity structure of the spiral bevel gear milling machine, the measured coordinate system is founded. The measuring head center coordinates are turned into the coordinates of work coordinate system by the homogeneous coordinate transformation matrix. 根据螺旋锥齿轮铣床的实体结构建立了测量坐标系,采用齐次坐标变换矩阵将测头中心坐标转化为工件坐标系内的坐标。