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    • 6. 发明公开
    • Driver for piezoelectric actuator and shutter control device utilizing piezoelectric device
    • 驱动器,用于压电致动器和用于使用压电元件的闭合的控制装置。
    • EP0508599A2
    • 1992-10-14
    • EP92302057.2
    • 1992-03-11
    • NIKON CORPORATION
    • Goto, TetsuroKatayama, AkiraTanabe, YoshiakiHasuda, Masanori
    • H01L41/04H01L41/09G03B9/06G03B17/38
    • H02N2/06G03B7/10G03B9/18H02N2/043H02N2/067
    • There is disclosed a driving device for piezoelectric actuator, in which a voltage is applied to a piezoelectric actuator to generate a mechanical deformation therein, thus actuating a mechanical system. In an aspect, the piezoelectric actuator is at first given a voltage of inverse polarity, for generating a displacement in an opposite direction, and then given a voltage of forward polarity, for generating a displacement in the normal functioning direction, thereby actuating the mechanical system. Displacement and acceleration become larger, as the displacement of the actuator takes place from a position in the inverse direction. In another aspect, the electrical insulation state of the piezoelectric actuator is detected, and, if deteriorated, the destruction of insulation is prevented by an alarm generation and/or inhibition of voltage application. In an embodiment, the insulation state is identified from the ambient humidity of the actuator. In another aspect, if the detected humidity is at a high level that may induce destruction of insulation, the piezoelectric actuator is driven with a low voltage, in order to dehumidity by heat generation. Also shutter control devices for camera, utilizing piezoelectric actuator, are disclosed.
    • 有圆盘游离缺失为压电致动器,其中一个电压被施加到压电致动器以在其中产生机械变形,从而致动的机械系统的驱动装置。在一个方面,压电致动器在第一给定极性相反的电压, 为在相反方向上产生位移,然后给定正向极性的电压时,在正常运转方向上产生位移,从而致动所述机械系统。位移和加速度变大,作为致动器的位移从发生 在逆方向上的位置。 在另一个方面中,当检测到压电致动器的电绝缘状态,并且,如果恶化,绝缘的破坏通过在报警产生和/或电压施加的抑制防止。 ,实施例中的绝缘状态从现有技术中致动器的环境湿度鉴定。 在另一个方面,如果检测到的湿度为高电平并可能诱发绝缘破坏时,压电致动器由发热驱动以低电压,以dehumidity。 所以快门控制装置用于照相机,利用压电致动器,是游离缺失盘。
    • 8. 发明公开
    • Driver for piezoelectric actuator and shutter control device utilizing piezoelectric device
    • 驱动压电致动器和用于使用压电元件的闭合的控制装置。
    • EP0696069A3
    • 1998-03-04
    • EP95202708.4
    • 1992-03-11
    • NIKON CORPORATION
    • Goto, TetsuroKatayama, AkiraTanabe, YoshiakiHasuda, Masanori
    • H01L41/04H01L41/09G03B9/08G03B7/083
    • H02N2/06G03B7/10G03B9/18H02N2/043H02N2/067
    • There is disclosed a driving device for piezoelectric actuator, in which a voltage is applied to a piezoelectric actuator to generate a mechanical deformation therein, thus actuating a mechanical system. In an aspect, the piezoelectric actuator is at first given a voltage of inverse polarity, for generating a displacement in an opposite direction, and then given a voltage of forward polarity, for generating a displacement in the normal functioning direction, thereby actuating the mechanical system. Displacement and acceleration become larger, as the displacement of the actuator takes place from a position in the inverse direction.
    • 有圆盘游离缺失为压电致动器,其中一个电压被施加到压电致动器以在其中产生机械变形,从而致动的机械系统的驱动装置。在一个方面,压电致动器在第一给定极性相反的电压, 为在相反方向上产生位移,然后给定正向极性的电压时,在正常运转方向上产生位移,从而致动所述机械系统。位移和加速度变大,作为致动器的位移从发生 在逆方向上的位置。 在另一个方面中,当检测到压电致动器的电绝缘状态,并且,如果恶化,绝缘的破坏通过在报警产生和/或电压施加的抑制防止。 ,实施例中的绝缘状态从现有技术中致动器的环境湿度鉴定。 在另一个方面,如果检测到的湿度为高电平并可能诱发绝缘破坏时,压电致动器由发热驱动以低电压,以dehumidity。 所以快门控制装置用于照相机,利用压电致动器,是游离缺失盘。