Basic concepts and definition of suspended tree and extended contour are given, an algorithm to extract it is presented using techniques of dynamic local coordinate system and adaptive bounding box. 文中提出了悬树和扩展轮廓的概念,通过对扩展轮廓的分析和定义,使用动态坐标系(DCS)和动态包围盒技术,设计了一个扩展轮廓的求取算法。
The First Integrals of Dynamic in Non-inertia Coordinate System 非惯性系动力学的第一积分
The technology relating to trackball is studied, which implement the dynamic adjustment of eye coordinate system, it can make model translation, rotation, zoom in virtual environment. 通过对虚拟轨迹球相关技术的研究,实现了对视点系的动态调整,在虚拟环境中可以实现对模型的平移、旋转、缩放的操作。
After dynamic decoupling, the coordinate control system is synthesized by designing the PID controller of the pressure loop and the power loop. 实现协调控制对象的动态解耦后,再分别设计压力回路和功率回路的控制器,最后得到单元机组协调系统的动态解耦控制系统。
In this article, the kinematic and dynamic methods for setting up the inertial coordinate system are simply described. 本文简述了建立惯性坐标系的运动学方法和动力学方法。