-
公开(公告)号：EP1786091A1
公开(公告)日：2007-05-16
申请号：EP05758234.8
申请日：2005-07-05
发明人： NAGAHAMA, Reiko , YAMAZAKI, Yutaka
CPC分类号： H01L41/0906 , G04C3/12
摘要： A detection electrode 82C having substantially rhombus shapes is substantially formed at the center of a piezoelectric element 82. Since the detection electrode 82C is formed at a location including the node of the oscillation in a longitudinal primary oscillation mode and the node of the oscillation in a flexural secondary oscillation mode, the strain due to the oscillation in the flexural secondary oscillation mode becomes minimized. Accordingly, when a phase difference between a drive signal and a detection signal is taken, an influence on the phase difference due to the oscillation in the flexural secondary oscillation mode can be suppressed to the minimum, and thus a drive frequency with respect to a predetermined phase difference is determined to a single value. Therefore, the phase difference is controlled to have a predetermined value, and thus an oscillating member 66 can be oscillated with a predetermined drive frequency. Further, since each of the oscillation modes excites an oscillation with a predetermined oscillation component, the reliability of the drive performance can be improved.
摘要翻译： 具有大致菱形形状的检测电极82C基本形成在压电元件82的中心。由于检测电极82C形成在包括纵向主振荡模式的振荡节点的位置处，并且振荡节点 弯曲次级振荡模式，由于弯曲次级振荡模式中的振荡引起的应变变得最小。 因此，当采取驱动信号和检测信号之间的相位差时，可以将由于弯曲次级振荡模式中的振荡引起的相位差的影响抑制到最小，因此相对于预定的 相位差被确定为单个值。 因此，相位差被控制为具有预定值，因此摆动构件66可以以预定的驱动频率摆动。 此外，由于每个振荡模式以预定的振荡分量激发振荡，因此可以提高驱动性能的可靠性。
-
2.发明授权APPARATUS, METHOD AND PROGRAM FOR DRIVING A PIEZOELECTRIC ACTUATOR AND ELECTRONIC DEVICE COMPRISING THE SAME 有权设备，方法和程序用于控制压电致动器和电子元件的这样的
公开(公告)号：EP1739820B1
公开(公告)日：2009-06-03
申请号：EP05726628.0
申请日：2005-03-17
摘要： A control circuit (131) returns the drive frequency to a prescribed drive frequency and then conducts another drive frequency variation when the reduction rate of the power source voltage is greater than the reference reduction rate; i.e., when either a piezoelectric actuator A is driven at a drive frequency with low driving efficiency and high power consumption, or the actuator cannot be started up for any reason. Therefore, the time needed to detect startup failure is not extended, startup failures and the like can be immediately determined based on the reduction rate of the power source voltage, and less time is needed to make this determination. Accordingly, the process beginning with detecting abnormalities and ending with optimizing the drive signal can be conducted rapidly, and the power consumption can be reduced to conserve energy.
-
公开(公告)号：EP4428630A1
公开(公告)日：2024-09-11
申请号：EP24161869.3
申请日：2024-03-06
发明人： YAMAZAKI, Yutaka
摘要： An electrically controlled mechanical watch (1) includes a mainspring (40), a wheel train (50), a hand that displays the time (60), a speed regulator (70) that controls a rotation cycle of the wheel train, a control unit (10) that controls the speed regulator (70), a power generator (70) that converts mechanical energy of the mainspring to electrical energy, a first power accumulation device (31) that accumulates the electrical energy of the power generator (70) and supplies the electrical energy to the control unit (10), a second power accumulation device (32) that is coupled to the first power accumulation device in parallel via a switch (33) and that accumulates the electrical energy, and a detection unit (13) that detects a mechanical energy amount accumulated in the mainspring. In a case in which the switch (33) is in an off state, when it is detected that the mechanical energy amount exceeds a first set value, the control unit controls (10) the switch (33) from the off state to an on state. In a case in which the switch (33) is in the on state, when it is detected that the mechanical energy amount falls below a second set value, the control unit (10) controls the switch (33) from the on state to the off state.
-
公开(公告)号：EP1786091B1
公开(公告)日：2010-03-17
申请号：EP05758234.8
申请日：2005-07-05
发明人： NAGAHAMA, Reiko , YAMAZAKI, Yutaka
CPC分类号： H01L41/0906 , G04C3/12
-
5.发明授权PIEZOELECTRIC ACTUATOR DRIVE DEVICE, ELECTRONIC DEVICE, AND DRIVE METHOD THEREOF 有权压电致动器驱动，电子设备和保证行车
公开(公告)号：EP1737114B1
公开(公告)日：2011-06-08
申请号：EP05720478.6
申请日：2005-03-10
CPC分类号： H02N2/062 , G04C3/12 , G04C17/005 , H01L41/0906
摘要： There is provided an electronic device comprising a piezoelectric actuator (A) and a drive control device (100) for controlling drive of the piezoelectric actuator. The drive control device (100) includes: a drive circuit (111) for supplying a drive signal SDR to a piezoelectric element of an oscillator (12); phase difference detection means (120) for detecting a phase difference representing the oscillation state of the oscillator (12); a comparison voltage setting circuit (133) for correcting a target phase difference serving as a target of the oscillation state; and drive frequency setting means (140) for comparing the phase difference to the target phase difference. By modifying the drive frequency of the drive signal SDR so that the phase difference approaches the target phase difference according to the comparison result, it is possible to realize effective drive of the piezoelectric actuator (A) without depending on the drive voltage.
-
-
-
-
搜索结果
5 条记录 (耗时 0.011 秒)
