基于自锁结构的尺蠖式压电直线驱动器设计  

Design of Inchworm Piezoelectric Linear Actuator Based on Self-locking Structure

作　　者：赵伟杰[1] 张然[1] Zhao Weijie;Zhang Ran(Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学,辽宁大连116024

出　　处：《煤矿机械》2023年第7期23-25,共3页Coal Mine Machinery

基　　金：国家自然科学基金项目(52175265,52275281);中央高校基本科研业务费(DUT21ZD101,DUT21GF308)。

摘　　要：设计了一种具有大行程、大输出力的尺蠖式压电直线驱动器。驱动器包括左、右2组结构相同的箝位机构、主驱动压电陶瓷以及输出方轴。该驱动器结构相对简单紧凑,并可断电自锁。箝位机构采用自锁结构,具有足够大的箝位力,因此驱动器可以有效实现较大的输出力。最后采用有限元法对箝位机构的位移、应力、振动模态以及固有频率进行了仿真分析,对其进行结构优化。An inchworm piezoelectric linear actuator with large stroke and large output was designed.The actuator includes two groups of clamping mechanisms with the same structure on the left and right,the main driving piezoelectric stack and the output square shaft.The structure of the actuator is relatively simple and compact,and can be powered off and self-locking.The clamping mechanism adopts self-locking structure and has enough clamping force,so the actuator can effectively achieve large output force.Finally,the displacement,stress,the vibration mode and natural frequency of the clamping mechanism were simulated and analyzed by finite element method,and its structure was optimized.

关 键 词：尺蠖 直线驱动器 箝位机构 压电陶瓷叠堆 自锁结构 

分 类 号：TM359.4[电气工程—电机]