Overcoming hysteresis in multilayered piezoceramic actuators used in adaptive optics
Overcoming hysteresis in multilayered piezoceramic actuators used in adaptive optics
复制标题
克服自适应光学中使用的多层压电陶瓷执行器的磁滞现象
DOI：
10.1117/12.917561
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Bryce E
中科院分区：
文献类型：
--
作者：
Bryce E
压电陶瓷致动器通过其宏观和纳米定位的能力在自适应光学领域内引起越来越多的兴趣。然而，其使用的主要缺点是存在固有的非线性滞后，这将降低定位的精度。多层压电陶瓷致动器的典型（原始）滞后是完全延伸的20%。已经研究了克服滞后的方法，但它们通常涉及对致动器及其定位系统的复杂添加。本文讨论了两种方法来克服滞后在一个更简单的方法。第一种方法是使用与致动器的延伸相关的电容测量，并将滞后减小到5%。第二种方法涉及在特定阻抗相位处测量频率，这可以将滞后减小到0 - 2%之间。这两种方法都提供了在延伸感测期间的滞后减小。
Piezoceramic actuators are of increasing interest within the field of adaptive optics through their ability for macro and nano positioning. However, a major drawback for their use is the inherent, non linear hysteresis that is present, which will reduce the accuracy in positioning. Typical (raw) hysteresis for multilayered piezoceramic actuators is 20% of full extension. Methods have been researched to overcome the hysteresis but they often involve complex additions to the actuators and its positioning system. This paper discusses two methods to overcome the hysteresis in a simpler approach. The first method is using capacitance measurements which correlate with the extension of the actuators and reduces hysteresis to 5%. The second method involves measuring the frequency at a specific impedance phase, which can reduce hysteresis to between 0 - 2%. Both methods provide reduction in hysteresis during extension sensing.
自适应光学：解决天文学成像问题？
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
A. Doel;J. Major;R. Myers
通讯作者：
R. Myers
影响因子：
1.7
作者：
E. Uzgur;Shin-Sung Kim;E. Bryce;D. Hutson;M. Strachan;K. Kirk
通讯作者：
E. Uzgur;Shin-Sung Kim;E. Bryce;D. Hutson;M. Strachan;K. Kirk