Gong Zhaohan, Zheng Yajun, Yao Shuhan, Liu Xinhu, Hu Ningdong, Hu Hongping
Department of Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Huazhong University of Science and Technology, Wuhan 430074, China.
Micromachines (Basel). 2024 Sep 28;15(10):1205. doi: 10.3390/mi15101205.
In order to provide a convenient and fast calculation method, the equivalent circuit of a novel stacked piezoelectric cymbal vibrator is studied. The equivalent circuit model of the piezoelectric stack is derived by combining the equivalent circuit models of the thin piezoelectric disk and electrode. The equivalent circuit of the cymbal structure is then derived. The equivalent circuit model of the stacked piezoelectric cymbal vibrator is further proposed. The output axial displacements and output forces of the cymbal vibrator under different excitation voltages are investigated using the equivalent circuit model. The effectiveness of the equivalent circuit has been verified by comparing it with the finite element method. Furthermore, the equivalent circuit method has a much faster calculation speed than the finite element method.
为了提供一种方便快捷的计算方法，对一种新型叠层压电钹式振动器的等效电路进行了研究。通过结合薄压电圆盘和电极的等效电路模型，推导了压电叠堆的等效电路模型。然后推导了钹式结构的等效电路。进一步提出了叠层压电钹式振动器的等效电路模型。利用该等效电路模型研究了钹式振动器在不同激励电压下的输出轴向位移和输出力。通过与有限元方法对比，验证了等效电路的有效性。此外，等效电路方法的计算速度比有限元方法快得多。
