【摘要】In this paper, we study the no-load behavior of a lightweight piezo-composite curved actuator (LIPCA) subjected to voltage and charge control. First, we examine the effect of hysteresis and creep when the actuator is voltage controlled at a slow scan speed. The experimental results show that creep increases the displacement hysteresis by over 25% when scanning at 1/60 Hz. Afterwards, we discuss the design and implementation of a charge-feedback circuit to control the displacement of the actuator. The hysteresis curves between voltage- and charge-control modes are compared for the scan frequencies of 1 and 5 Hz. The results show that charge control (compared to voltage control) of a LIPCA device exhibits significantly less hysteresis - over 80% less.

【摘要机译】在本文中，我们研究了受电压和电荷控制的轻型压电复合弯曲致动器（LIPCA）的空载行为。首先，我们检查了以低扫描速度对执行器进行电压控制时的磁滞和蠕变的影响。实验结果表明，以1/60 Hz扫描时，蠕变使位移滞后增加了25％以上。然后，我们讨论电荷反馈电路的设计和实现，以控制执行器的位移。比较了1 Hz和5 Hz扫描频率下电压控制模式和电荷控制模式之间的磁滞曲线。结果表明，LIPCA器件的电荷控制（与电压控制相比）表现出明显更低的磁滞-降低了80％以上。

【期刊名称】

【会议名称】 Conference on Active Materials: Behavior and Mechanics; 20060227-0302; San Diego,CA(US)

【会议地点】San Diego,CA(US)

【作者】James Beck；Maciej Noras；Jerzy Kieres；John E. Speich；Karla M. Mossi；Kam K. Leang；

【作者单位】Virginia Commonwealth University, Department of Mechanical Engineering, 601 West Main Street, PO BOX 843015, Richmond, VA, 23284-3015, USA;

【授予单位】

【学科】

【学位】

【授予单位】Virginia Commonwealth University, Department of Mechanical Engineering, 601 West Main Street, PO BOX 843015, Richmond, VA, 23284-3015, USA;

【学科】

【授予学位】

【导师姓名】

【发表时间】

【收录信息】

【会议组织】

【会议召开年】2006

【年(卷),期】2006(),

【年度】2006

【页码】P.61701M.1-61701M.10

【总页数】10

【原文格式】PDF

【正文语种】eng

【中图分类】TB30;

【关键词】pre-stressed piezoactuators；charge-feedback control；hysteresis；creep；

机译 预应力压电执行器;电荷反馈控制;磁滞;蠕变;