柔性框架式蠕动机构运动时的负位移现象  

Recession Phenomenon in the Movement of the Flexible Frame Inchworm Mechanism

作　　者：李翠红[1] 孟永钢[1] 田煜[1] 叶子申[1] 温诗铸[1] 

机构地区：[1]清华大学摩擦学国家重点实验室,北京100084

出　　处：《机械设计与研究》2006年第1期56-59,共4页Machine Design And Research

基　　金：国家"八六三"高技术资助项目(2002AA23240)

摘　　要：基于尺蠖运动原理,以压电陶瓷作为驱动和钳位元件,研制了柔性框架式蠕动机构。在计算机控制下,对其步进性能进行了测试,首先对比了六步和四步模式运动的效果,对机构运动中出现的负位移现象进行了深入分析;继而在四步模式下,研究了钳位电压和驱动电压对机构负位移的影响。研究结果对提高该进给机构的运动速度、运动精度有一定的指导意义。A type of inchworm system utilized piezo-electric ceramics embedded in a flexible frame as driving and clamping units was developed. Its stepping performance was tested under control of a computer. The movements of the system in the six-step and the four-step modes were compared and the recession phenomenon was discussed in detail. The influences of the clamping and driving voltages on the recession displacement were studied. These results are valu- able to improve the moving velocity and positioning accuracy of this type inchworm mechanism.

关 键 词：柔性框架 蠕动机构 步进模式 压电 

分 类 号：TH113.22[机械工程—机械设计及理论]