局部环状电极压电驱动器制备与夹持力测试

采用丝网电极印刷法制备了局部环状电极压电驱动器,并对其动力进行了测试研究。搭建了夹持力测试平台,对局部环状电极压电驱动器和传统压电驱动器的径向夹持力进行测试和分析。实验结果表明,分别在频率为0.2 Hz和峰值200 V的方波和正弦波激励下,局部环状电极压电驱动器带电极区的径向夹持力峰值分别为0.60 N和0.58 N,两种夹持力峰值响应分别是传统元件的2.72倍和2.76倍。无电极区的反向夹持力峰值为0.29 N和0.28 N,其略大于传统元件的夹持力峰值,实验结果同时验证了局部环状电极压电驱动器的正交异性。

Preparation and Clamping Force Test of Piezoelectric Actuatorwith Local Ring Electrodes

The piezoelectric actuators with local ring electrodes were fabricated by screen electrode printing, and its driving force was tested and studied. A clamping force test platform was built to test and analyze the radial clamping force of the piezoelectric actuators with local ring electrodes and the conventional electrode piezoelectric actuator. The experimental results show that under the excitation of square wave and sine wave with a frequency of 0.2 Hz and a peak value of 200 V, the peak values of radial clamping force in the electrode region of piezoelectric actuators with local ring electrodes are 0.60 N and 0.58 N, respectively. And the peak responses of the two clamping forces are 2.72 and 2.76 times higher than those of the conventional electrode piezoelectric actuator respectively. The peak values of the reverse clamping force in the electrodeless area are 0.29 N and 0.28 N, which are slightly larger than those of the conventional piezoelectric actuators. The experimental results also verify the orthogonality of the piezoelectric actuators with local ring electrodes.