被动箝位大行程直线压电驱动器的设计  

Design of an inverse clamping piezoelectric inchworm motor with linear long distance

作　　者：曲建俊[1] 郭文峰[1] 李将[1] 刘畅[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《吉林大学学报（工学版）》2015年第4期1168-1174,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50975057;51175104)

摘　　要：基于被动箝位和三角放大的工作原理,设计了一款单向直线压电驱动器。可以在断电状态下自锁,箝位体三角放大结构提高了箝位体压电叠堆的输出位移。实验验证了驱动器运行原理的可行性,并测试了驱动器空载特性和负载特性,以及通电和断电时箝位力的大小,分析了驱动力较小的影响因素。驱动电压为150V,驱动频率为50 Hz时,驱动器运行平稳,最大驱动力为2.1N,空载运行速度为0.38mm/s;驱动频率为70Hz时,运行速度最大,为0.43mm/s。A kind of piezoelectric inchworm motor was designed based on inverse clamping and triangulation amplification. The motor can be self-locked under power-off. The output displacement of the clamping is amplified by the structure of triangulation amplification. The principle of the motor was demonstrated by experiment. The no-load and load characteristics were tested in the experiment. The clamping forces under the states of power-on and power-off were obtained and the factors influencing the forces were analyzed. When the driving frequency is 50 Hz, the motor is in optimized state. The maximum driving force is 2. 1 N and the no-load velocity is 0. 38 mm/s~ when the frequency is 70 Hz, the motor researches the highest velocity of 0.43 mm/s.

关 键 词：机械设计 压电驱动器 蠕动式 被动箝位 三角放大 

分 类 号：TN384[电子电信—物理电子学] TH703[机械工程—仪器科学与技术]