Fu Xifeng, Gong Hong, Lu Mingming, Zhou Jiakang, Lin Jieqiong, Du Yongsheng, Zhou Ruiqi
Key Laboratory of Micro/Nano and Ultra-Precision Manufacturing of Jilin Province, School of Mechatronic Engineering, Changchun University of Technology, Changchun 130012, China.
Micromachines (Basel). 2021 Dec 9;12(12):1532. doi: 10.3390/mi12121532.
Three-dimensional elliptical vibration assisted cutting technology has been widely used in the past few years. The piezoelectric stack drive structure is an important part of the three-dimensional elliptical vibration aided cutting system. Its piezoelectric hysteresis characteristics affects the final output of the elliptical trajectory. Aiming at this problem, a piezoelectric hysteresis modeling method based on a generalized Bouc-Wen model is presented in this paper. An improved flower pollination algorithm (IFPASO) was used to identify Bouc-Wen model parameters. Standard test result shows that IFPASO has better algorithm performance. The model identification effect experiment proved that the Bouc-Wen model obtained by IFPASO identification, the highest modeling accuracy of the three axial subsystems, can reach 98.86%. Therefore, the model can describe the piezoelectric hysteresis characteristics of the three axial subsystems of the 3D-EVC system effectively and has higher modeling accuracy and fitting accuracy.
三维椭圆振动辅助切削技术在过去几年中得到了广泛应用。压电叠堆驱动结构是三维椭圆振动辅助切削系统的重要组成部分。其压电滞后特性影响椭圆轨迹的最终输出。针对这一问题，本文提出了一种基于广义Bouc-Wen模型的压电滞后建模方法。采用改进的花授粉算法（IFPASO）来识别Bouc-Wen模型参数。标准测试结果表明IFPASO具有更好的算法性能。模型识别效果实验证明，通过IFPASO识别得到的Bouc-Wen模型，三个轴向子系统的最高建模精度可达98.86%。因此，该模型能够有效描述3D-EVC系统三个轴向子系统的压电滞后特性，具有较高的建模精度和拟合精度。
