公开(公告)号：US07218037B2

公开(公告)日：2007-05-15

申请号：US11189334

申请日：2005-07-26

申请人： Michael Denzler ,  Stefan Kohn ,  Martin Neumaier ,  Roland Niefanger ,  Klaus Plecher ,  Andreas Voigt ,  Claus Zumstrull

发明人： Michael Denzler ,  Stefan Kohn ,  Martin Neumaier ,  Roland Niefanger ,  Klaus Plecher ,  Andreas Voigt ,  Claus Zumstrull

IPC分类号： H01L41/053

CPC分类号： H01L41/0533

摘要： A method is described for improving the long-term stability of a piezoelectric actuator encased in a potting compound containing or forming hydrogen atoms. Oxygen is contained in the piezoelectric actuator's piezoelectric ceramic. Appropriate means are employed so that unsaturated bonds of the hydrogen in the potting compound will release less oxygen from the piezoelectric ceramic. One means consists in reducing the concentration of hydrogen in the potting compound, with appropriate thermal processes as a result of which the concentration of hydrogen will be reduced to below a predefined threshold being applied after the piezoelectric actuator has been encased in the potting compound. Means that form bonds with the hydrogen in the potting compound or duct oxygen thereto are provided in further embodiments.

摘要翻译： 描述了一种用于改善封装在含有或形成氢原子的封装化合物中的压电致动器的长期稳定性的方法。 氧气被包含在压电致动器的压电陶瓷中。 使用合适的方法，使得灌封化合物中的氢的不饱和键将从压电陶瓷释放更少的氧。 一种手段在于通过适当的热处理来降低灌封化合物中的氢浓度，由此在将压电致动器封装在灌封化合物中之后，氢的浓度将降低到低于预定阈值。 在另外的实施方案中提供了与灌封化合物中的氢形成键或其导管氧的方式。

公开(公告)号：US07550903B2

公开(公告)日：2009-06-23

申请号：US10598346

申请日：2005-01-19

申请人： Bernhard Döllgast ,  Roland Niefanger ,  Kord Witte

发明人： Bernhard Döllgast ,  Roland Niefanger ,  Kord Witte

IPC分类号： H01L41/22 ,  H01L41/083

CPC分类号： H01L41/257 ,  F02M51/0603 ,  F02M61/16 ,  H01L41/083

摘要： In a method and device for polarizing a piezoelectric actuator according to which high-frequency pulse voltages can be used for polarizing the actuators an actuator to be polarized is mounted between two retaining elements while connected in series to a second piezoelectric actuator. The retaining elements provide the actuator (1) with a desired pretension. A compensating element compensates for changes in length of the actuator (1) so that even in the event of high-frequency pulse voltages and thus high-frequency changes in length, the pretension can be maintained within a desired range of values. Preferably, the second piezoelectric actuator has the identical design of the first actuator and is polarized with the first actuator. This enables two piezoelectric actuators to be simultaneously polarized during a polarizing process.

摘要翻译： 在用于极化压电致动器的方法和装置中，根据该方法和装置，可以使用高频脉冲电压来使致动器偏振，要被极化的致动器安装在两个保持元件之间，同时与第二压电致动器串联连接。 保持元件使致动器（1）具有期望的预紧力。 补偿元件补偿致动器（1）的长度变化，使得即使在高频脉冲电压和因此长度的高频变化的情况下，预张力可以保持在期望的值范围内。 优选地，第二压电致动器具有与第一致动器相同的设计并且与第一致动器极化。 这使得两个压电致动器在偏振过程中同时被极化。

公开(公告)号：US20080265715A1

公开(公告)日：2008-10-30

申请号：US10598346

申请日：2005-01-19

申请人： Bernhard Dollgast ,  Roland Niefanger ,  Kord Witte

发明人： Bernhard Dollgast ,  Roland Niefanger ,  Kord Witte

IPC分类号： H02N2/06

CPC分类号： H01L41/257 ,  F02M51/0603 ,  F02M61/16 ,  H01L41/083

摘要： In a method and device for polarizing a piezoelectric actuator according to which high-frequency pulse voltages can be used for polarizing the actuators an actuator to be polarized is mounted between two retaining elements while connected in series to a second piezoelectric actuator. The retaining elements provide the actuator (1) with a desired pretension. A compensating element compensates for changes in length of the actuator (1) so that even in the event of high-frequency pulse voltages and thus high-frequency changes in length, the pretension can be maintained within a desired range of values. Preferably, the second piezoelectric actuator has the identical design of the first actuator and is polarized with the first actuator. This enables two piezoelectric actuators to be simultaneously polarized during a polarizing process.

摘要翻译： 在用于极化压电致动器的方法和装置中，根据该方法和装置，可以使用高频脉冲电压来使致动器偏振，要被极化的致动器安装在两个保持元件之间，同时与第二压电致动器串联连接。 保持元件使致动器（1）具有期望的预紧力。 补偿元件补偿致动器（1）的长度变化，使得即使在高频脉冲电压和因此长度的高频变化的情况下，预张力可以保持在期望的值范围内。 优选地，第二压电致动器具有与第一致动器相同的设计并且与第一致动器极化。 这使得两个压电致动器在偏振过程中同时被极化。

公开(公告)号：US20070024160A1

公开(公告)日：2007-02-01

申请号：US11189334

申请日：2005-07-26

申请人： Michael Denzler ,  Stefan Kohn ,  Martin Neumaier ,  Roland Niefanger ,  Klaus Plecher ,  Andreas Voigt ,  Claus Zumstrull

发明人： Michael Denzler ,  Stefan Kohn ,  Martin Neumaier ,  Roland Niefanger ,  Klaus Plecher ,  Andreas Voigt ,  Claus Zumstrull

IPC分类号： H01L41/00

CPC分类号： H01L41/0533

摘要： A method is described for improving the long-term stability of a piezoelectric actuator encased in a potting compound containing or forming hydrogen atoms. Oxygen is contained in the piezoelectric actuator's piezoelectric ceramic. Appropriate means are employed so that unsaturated bonds of the hydrogen in the potting compound will release less oxygen from the piezoelectric ceramic. One means consists in reducing the concentration of hydrogen in the potting compound, with appropriate thermal processes as a result of which the concentration of hydrogen will be reduced to below a predefined threshold being applied after the piezoelectric actuator has been encased in the potting compound. Means that form bonds with the hydrogen in the potting compound or duct oxygen thereto are provided in further embodiments.