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1.发明授权公开(公告)号：US08482182B2
公开(公告)日：2013-07-09
申请号：US12754271
申请日：2010-04-05
申请人： Hisao Ito , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
发明人： Hisao Ito , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
IPC分类号： H01L41/00
摘要： A driving apparatus includes a piezoelectric element which undergoes expansion/contraction motion by a driving signal; a driving shaft which is mounted on the piezoelectric element, and undergoes reciprocating movement according to the expansion/contraction motion of the piezoelectric element; a first movement member which is friction-engaged with the driving shaft, and moves due to the reciprocating movement of the driving shaft; and a first control portion which applies driving signals to the piezoelectric element; the first control portion applies driving control pulse signals when the first movement member is to be moved, and applies stop control pulse signals when the stopped first movement member is not to be moved to put the first movement member into a vibration-arrested state. By this means, the stopped first movement member can be smoothly moved, and the first movement member in motion can be smoothly stopped.
摘要翻译： 驱动装置包括通过驱动信号进行伸缩运动的压电元件; 驱动轴，其安装在压电元件上，并且根据压电元件的膨胀/收缩运动进行往复运动; 与驱动轴摩擦接合并由于驱动轴的往复运动而移动的第一移动构件; 以及向压电元件施加驱动信号的第一控制部; 当第一移动部件移动时，第一控制部分施加驱动控制脉冲信号，并且当停止的第一移动部件不被移动以使第一移动部件处于振动停止状态时，施加停止控制脉冲信号。 通过这种方式，停止的第一移动构件能够平稳地移动，并且运动中的第一移动构件能够平稳地停止。
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2.发明申请公开(公告)号：US20100270954A1
公开(公告)日：2010-10-28
申请号：US12754271
申请日：2010-04-05
申请人： Hisao ITO , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
发明人： Hisao ITO , Hideo Yoshida , Takezo Nagamitsu , Tetsuya Tokoro , Yukihiko Sigeoka
IPC分类号： H02N2/14
摘要： A driving apparatus includes a piezoelectric element which undergoes expansion/contraction motion by a driving signal; a driving shaft which is mounted on the piezoelectric element, and undergoes reciprocating movement according to the expansion/contraction motion of the piezoelectric element; a first movement member which is friction-engaged with the driving shaft, and moves due to the reciprocating movement of the driving shaft; and a first control portion which applies driving signals to the piezoelectric element; the first control portion applies driving control pulse signals when the first movement member is to be moved, and applies stop control pulse signals when the stopped first movement member is not to be moved to put the first movement member into a vibration-arrested state. By this means, the stopped first movement member can be smoothly moved, and the first movement member in motion can be smoothly stopped.
摘要翻译： 驱动装置包括通过驱动信号进行伸缩运动的压电元件; 驱动轴，其安装在压电元件上，并且根据压电元件的膨胀/收缩运动进行往复运动; 与驱动轴摩擦接合并由于驱动轴的往复运动而移动的第一移动构件; 以及向压电元件施加驱动信号的第一控制部; 当第一移动部件移动时，第一控制部分施加驱动控制脉冲信号，并且当停止的第一移动部件不被移动以使第一移动部件处于振动停止状态时，施加停止控制脉冲信号。 通过这种方式，停止的第一移动构件能够平稳地移动，并且运动中的第一移动构件能够平稳地停止。
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3.发明授权Method for driving piezoelectric actuator, piezoelectric-actuator control circuit, and image-stabilization control circuit 有权用于驱动压电致动器，压电致动器控制电路和图像稳定控制电路的方法公开(公告)号：US08237327B2
公开(公告)日：2012-08-07
申请号：US12754030
申请日：2010-04-05
IPC分类号： H02N2/06
摘要： Abnormal noise generated while driving a piezoelectric actuator is prevented. A pulse-generation circuit is capable of selectively generating a displacement pulse and a stationary pulse as a drive pulse for application to a piezoelectric element, the displacement pulse having a duty ratio for causing a lens to be displaced by a predetermined step width, and the stationary pulse having a duty ratio for causing the lens to remain stationary in a current position. The pulse-generation circuit controls the production of the drive pulse continuously for a plurality of times within the servo control cycle, causes the displacement pulse to be produced when the remainder of a required amount of displacement is equal to or greater than a threshold value, and causes the stationary pulse to be continuously produced until the initiation of the next servo control cycle when the remainder is less than the threshold value.
摘要翻译： 防止在驱动压电致动器时产生的异常噪声。 脉冲发生电路能够选择性地产生位移脉冲和静止脉冲作为施加到压电元件的驱动脉冲，所述位移脉冲具有使透镜以预定的步长位移的占空比，并且 具有使透镜在当前位置保持静止的占空比的固定脉冲。 脉冲发生电路在伺服控制周期内连续地控制驱动脉冲的产生多次，当所需的位移量的余数等于或大于阈值时，产生位移脉冲， 并且当余数小于阈值时，使得静止脉冲被连续地产生直到下一个伺服控制周期的开始。
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