Lu Danhong, Lin Qiuxiang, Chen Bingxun, Jiang Chunrong, Hu Xia
Nanjing Institute of Technology, Nanjing, China.
Nanjing Institute of Technology, Nanjing, China.
Ultrasonics. 2020 Sep;107:106158. doi: 10.1016/j.ultras.2020.106158. Epub 2020 Apr 26.
We have developed a single-modal linear motor which contains two kinds of PZT ceramics. The linear motor works by exciting the transverse vibration mode of the PZT ceramic on the upper surface of stator elastomer and the shear vibration mode of PZT ceramics at two ends simultaneously. The operation principle of the motor is analyzed in detail. And the rule of the driving foot amplitude varies with the size of the end protruding structure has been further researched by FEM analysis. The prototype is manufactured, and its operating characteristics are experimentally studied and analyzed. The no-load velocity and the maximum output force are tested to be 169.4 mm/s and 1.1 N, respectively. The results show that extra arrangement of PZT ceramics which works on shear vibration mode can efficiently improve the output of motor.
我们开发了一种包含两种压电陶瓷的单模态直线电机。该直线电机通过同时激发定子弹性体上表面压电陶瓷的横向振动模式和两端压电陶瓷的剪切振动模式来工作。详细分析了电机的工作原理。并通过有限元分析进一步研究了驱动足振幅随端部突出结构尺寸变化的规律。制造了样机，并对其运行特性进行了实验研究和分析。测得空载速度和最大输出力分别为169.4毫米/秒和1.1牛。结果表明，额外布置工作在剪切振动模式的压电陶瓷可以有效提高电机的输出。
