摘要
综合采用计算机辅助几何约束、尺寸约束、尺寸方程和尺寸驱动技术 ,构造一些典型的多自由度平面连杆模拟机构。给定每个输入件的驱动尺寸 ,确定输出件被驱动尺寸 ,求解输出运动杆件位姿。利用 CAD软件的记录功能 ,得到机构输出杆件位姿数据。用 Excel软件拟合位姿数据 ,得到每个输入件驱动尺寸与输出件被驱动尺寸位姿拟合曲线和拟合方程。求解了机构输出件的速度和加速度方程。计算机模拟结果表明 ,该方法简捷直观、求解精度高、重复性好 ,而且可以完成复杂机构和多自由度机构的运动分析 。
Based on computer geometric techniques, a kinematic analysis approach for planar mechanism with multiple-DOF is presented, and some typical of simulation planar mechanisms with multiple-DOF are created. The driving dimensions of input links are given and modified, and the driven dimension of output link is changed automatically. By using recording function of CAD software, the position and orientation of output link are recorded. The fit equation of the position and orientation of output link respecting with motion of input link is obtained by using Excel software. Finally, the velocity and acceleration equations are derived from the fit equation of position and orientation. The results of computer simulation the approach has not only fairly quick and straightforward, but also advantages of accuracy and repeatability.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2003年第16期1360-1364,共5页
China Mechanical Engineering
基金
河北省自然科学基金资助项目 ( 5 0 12 0 7)
关键词
多自由度机构
运动分析
几何约束
尺寸驱动
kinematic analysis computer simulation geometric constraint dimension driving
