摘要
设计了用于数字化三维人体模型或假肢的四连杆膝关节,为了达到理想的运动效果,以膝机构瞬心坐标实际值与理想值之差最小,即膝机构的实际瞬心曲线与理想的膝关节瞬心轨迹相一致为目标函数,在五维设计空间中求得一组最优解,利用Pro/E具有几何约束和尺寸驱动等参数化设计功能,无需进行烦琐复杂的公式推导即可建立满足约束要求的数学模型,并应用Pro/E的多目标设计研究功能求得满足运动要求的杆件参数,在此基础上进行膝关节机构的三维造型及装配,进而在Pro/Mechanism环境下对仿生膝关节杆机构进行运动仿真。
The 4-bar bionic knee joint was designed for digital 3-D human body model or artificial limb. To reach the ideal aim, with the difference between actual value of knee mechanism twinkling center and its ideal data minimized as objected function, that is to make the actual twinkling center of the knee mechanism accord with its ideal value, a group of optimized solutions in 5-dimension design space were obtained. To use the geomantie limitation and size driving functions of Pro/E, the mathematical model which satisfies limited condition can be built and the accurate structural parameters of the bars can be obtained without complex formula derivation. The 3-dimention model of knee joint mechanism and assembly were carried out, and the motion of bionic knee joint bar system was simulated under Pro / Mechanism.
出处
《机床与液压》
北大核心
2009年第6期183-185,共3页
Machine Tool & Hydraulics
基金
湖北省教育厅2007年科研重点资助项目(D200717002)
湖北省数字化纺织装备重点实验室资助项目(DTL200707)
