指向机构微调平台的结构设计与分析

针对提高指向机构定位精度的要求,充分利用压电陶瓷驱动器和柔性铰链的优点,设计一套基于压电陶瓷驱动的新型高精度的两自由度微调平台,并实现了微调平台的机构、驱动、检测的一体化。采用余弦矩阵法,对微调平台的机械结构进行运动学分析,并利用Ansys软件建立有限元模型进行静力分析,求出各关键零、部件的微位移和应力分布,验证了设计方案能够满足工作空间和强度准则的要求。

Design and analysis of the micro-adjusting platform on directing mechanism

Aiming at the demand on improving the locating precision of the directing mechanism.A novel type of 2-DOF piezo actuator driven micro-adjusting platform is designed,which realized mechanism,driving and detection integration.By the method of cosine matrix,the kinematics analysis of the mechanism is done.With the help of ansys,the finite element model is build and statics analysis is done.The finite element analysis shows the micro displacement and the stress distributing of the key parts,which proved the method can satisfy the demand of the working space and the intensity principle.