压电陶瓷致动器迟滞曲线插值算法研究  

Study on Interpolation Algorithm of Piezo-ceramic Hysteresis Curve

作　　者：刘芳[1] 赵跃进[1] 刘小华[1] 惠梅[1] 武红[1] 程蓉蓉[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《压电与声光》2008年第3期382-384,共3页Piezoelectrics & Acoustooptics

基　　金：国家"九七三"基金资助项目(61329020203)

摘　　要：压电陶瓷致动器在精密定位机构中得到了广泛的应用,但其本身固有的非线性迟滞特性严重影响到机构定位控制的精度。通过实验测试压电陶瓷致动器迟滞曲线,对比分析了线性插值、一元三次插值以及三次样条插值三种插值算法的插值效果。实验表明,电压上升阶段采用一元三次插值算法插值和电压下降阶段采用三次样条插值算法插值可取得较好的插值效果。Piezo ceramic actuators are widely used in the field of precisely position, however they still have disadvantage of hysteresis. In this paper several interpolation algorithms are compared and discussed by hysteresis curve： such as linear interpolation, parabola interpolation and spline interpolation. The experimental results show that parabola interpolation is suitable for the descent stage while spline interpolation suitable for the increasing stage.

关 键 词：压电陶瓷 迟滞 插值 

分 类 号：TP24[自动化与计算机技术—检测技术与自动化装置]