两级复合放大箝位步进压电直线电机  

Clamp Stepper Piezoelectric Linear Motor with Combination of Two Amplification

作　　者：韩路[1] 黄卫清[1,2] 王寅 

机构地区：[1]南京航空航天大学结构力学及控制国家重点实验室,南京210016 [2]广州大学机械与电气工程学院,广州510006 [3]华侨大学机电及自动化学院,厦门361021

出　　处：《振动．测试与诊断》2017年第4期698-702,共5页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51375224);华侨大学高层次人才科研启动费资助项目(15BS102)

摘　　要：针对尺蠖式电机运行过程中导轨与动子对加工与装配要求过高的问题,提出了一种尺蠖式原理的两级复合放大箝位步进压电直线电机,分析了电机的工作原理,设计了电机箝位机构和总体结构。利用有限元软件对箝位机构进行仿真分析,得到柔性结构的最佳尺寸。制作样机并设计实验,得到了电机的速度特性曲线并进行分析。样机的实验结果证明了该方案的可行性,并且在电压峰峰值为100V、频率为150Hz的方波信号激励下,电机的空载速度可达1.23mm/s,最大推力可达1.6N。该电机有效降低了驱动器的加工与装配要求,增强了电机运行的稳定性。To reduce the requirements for machining precision and assembly,a new type of linear motor is presented based on the micro-vibration of piezoelectric stacks.The working mechanism of the motor is analyzed.Then the clamping structure and overall structure of motor is designed.Further,the best size of the flexible structures is obtained using finite element analysis method on the clamping structure.The prototype is manufactured and tested.Then the speed characteristic curve of motor is analyzed.The experimental results on the prototype verify the feasibility of the scheme,by applying voltage signal of peak to peak value 100 Vand frequency of 150 Hz,the no-load speed is 1.23mm/s and the thrust is 1.6N.This structure makes the motor run smoothly and reduces the requirements for machining precision and assembly.

关 键 词：直线电机 箝位机构 叠层压电叠堆 驱动足 

分 类 号：TM356[电气工程—电机] TH113.1[机械工程—机械设计及理论]