摘要
本文根据压电陶瓷的非线性特性,提出了一种采用离散电压点线性化压电陶瓷的方法。利用数模输出卡,输出不同步长的单个的离散电压,控制电陶瓷伸长的速度,从而达到利用选取的电压值参数来控制压电陶瓷伸长速度的目的。选取恰当的电压值,可以使得压电陶瓷在时间域上线性的伸长而达到线性化的。设计基于LabVIEW的控制系统,并对线性化方法进行了原理分析和实验。实验结果表明,该系统可以有效的在0～300V范围内使压电陶瓷的伸长量与时间成线性关系,定位精度为1nm。
According to the piezoelectric ceramic＇s nonlinear characteristic, a method of piezoelectric ceramic＇s linearization based on discrete point of voltage is presented. By using the DA output card, it outputs single voltage which in different interval. In this way, the speed of piezoelectric ceramic＇s elongation can be controlled by the output voltages. It can be elongated linearly in the time field with the special voltages adopted before. In order to test the method, an experimental control system and program are designed. The experiment shows that the system is effective to linearize the piezoelectric ceramic in the range of 0-300 V with the superiority which includes low cost with universal component and high positioning accuracy with 1 nm.
出处
《国外电子测量技术》
2008年第5期4-5,77,共3页
Foreign Electronic Measurement Technology
基金
陕西省重点实验室开放基金项目(ZSKJ200703)
关键词
压电陶瓷
线性化
虚拟仪器
piezoelectric ceramie
linearization
virtual instrument
