公开(公告)号：US07119475B2

公开(公告)日：2006-10-10

申请号：US10812390

申请日：2004-03-30

申请人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Makoto Okeya

发明人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Makoto Okeya

IPC分类号： H01L41/08

CPC分类号： H02N2/142 ,  H02N2/004 ,  H02N2/103

摘要： A drive device for a piezoelectric actuator, wherein the time needed to achieve highly efficient drive conditions is shortened to reduce power consumption, and stabilized control can be performed. The device has a phase difference detection device (phase difference/voltage conversion circuit (51)) for detecting detection signals of longitudinal oscillation and bending oscillation from an oscillator (5) and detecting the phase difference between these two signals, frequency control devices (52 to 56) for comparing the phase difference detected by the phase difference detection device with a standard phase difference value and controlling the frequency of a drive signal sent to a piezoelectric element (17) on the basis of the results of this comparison, and an amplitude detection device (amplitude detection circuit (57)) for detecting the amplitude of the detection signal of the piezoelectric element (17). The frequency control device compares the amplitude with a standard amplitude value and controls the frequency of the drive signal on the basis of the results of this comparison.

摘要翻译： 用于压电致动器的驱动装置，其中缩短实现高效率驱动条件所需的时间以减少功耗，并且可以执行稳定的控制。 该装置具有用于检测来自振荡器（5）的纵向振荡和弯曲振荡的检测信号并检测这两个信号之间的相位差的频率控制装置（52）的相位差检测装置（相位差/电压转换电路（51）） 至56），用于将由相位差检测装置检测的相位差与标准相位差进行比较，并且基于该比较的结果控制发送到压电元件（17）的驱动信号的频率，以及振幅 用于检测压电元件（17）的检测信号的振幅的检测装置（振幅检测电路（57））。 频率控制装置将振幅与标准振幅值进行比较，并根据该比较的结果控制驱动信号的频率。

公开(公告)号：US07675218B2

公开(公告)日：2010-03-09

申请号：US11076065

申请日：2005-03-10

申请人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

IPC分类号： H01L41/09

CPC分类号： H02N2/062 ,  G04C3/12 ,  G04C17/005 ,  H01L41/0906

摘要： An electronic device comprising a power source, a piezoelectric actuator A, and a drive control apparatus 100 for controlling the driving of the piezoelectric actuator, wherein the drive control apparatus 100 is provided with a drive circuit 111 for supplying a drive signal SDR to the piezoelectric element of the vibrating body 12, a phase difference detection means 120 for detecting the phase difference indicating the vibration state of the vibrating body 12, a comparison voltage setting circuit 133 for correcting the target phase difference to be the target for the vibration state, and a drive frequency setting means 140 for comparing the phase difference with the target phase difference; and the piezoelectric actuator A can be driven with high efficiency independent of the drive voltage by modifying the drive frequency of the drive signal SDR so that the phase difference approaches the target phase difference based on the results of the above comparison.

摘要翻译： 一种电子设备，包括电源，压电致动器A和用于控制压电致动器的驱动的驱动控制装置100，其中驱动控制装置100设置有驱动电路111，用于将驱动信号SDR提供给压电 振动体12的元件，用于检测表示振动体12的振动状态的相位差的相位差检测单元120，将目标相位差校正为振动状态的目标的比较电压设定电路133以及 用于将相位差与目标相位差进行比较的驱动频率设定装置140; 并且通过修改驱动信号SDR的驱动频率，可以以与驱动电压无关的方式驱动压电致动器A，从而基于上述比较的结果，相位差接近目标相位差。

公开(公告)号：US07663978B2

公开(公告)日：2010-02-16

申请号：US11066557

申请日：2005-02-28

申请人： Takashi Kawaguchi ,  Joji Kitahara ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Joji Kitahara ,  Makoto Okeya

IPC分类号： G04C22/00 ,  G04F5/00 ,  G04C3/00 ,  H01L41/00

CPC分类号： H02N2/101 ,  G04C3/12 ,  G04C10/00 ,  H02N2/004 ,  H02N2/142

摘要： In an electronic device 1 comprising a battery 200 and a piezoelectric actuator A, a power source voltage before drive control is started is maintained by a sample holding circuit 102, a reference voltage is set by a reference voltage generating circuit 103 on the basis of the power source voltage, and a control circuit 106 stops driving when the power source voltage falls below a drive stop voltage as compared by a second comparison circuit 105, and begins driving the piezoelectric actuator A again when the power source voltage exceeds the reference voltage as compared by a first comparison circuit 104. Therefore, the device can be more easily reduced in size by using a small power source, and the driving time can be markedly reduced using an intermittent driving procedure that corresponds to the conditions of the battery voltage.

摘要翻译： 在包括电池200和压电致动器A的电子设备1中，驱动控制开始之前的电源电压由采样保持电路102保持，基准电压由基准电压发生电路103设定 电源电压时，与第二比较电路105相比，当电源电压降低到驱动停止电压以下时，控制电路106停止驱动，当电源电压超过参考电压时，再次开始驱动压电致动器A 通过第一比较电路104.因此，通过使用小电源可以更容易地减小装置的尺寸，并且可以使用对应于电池电压的条件的间歇驱动程序来显着降低驱动时间。

公开(公告)号：US20070278976A1

公开(公告)日：2007-12-06

申请号：US11076065

申请日：2005-03-10

申请人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

IPC分类号： H02N2/00

CPC分类号： H02N2/062 ,  G04C3/12 ,  G04C17/005 ,  H01L41/0906

摘要： An electronic device comprising a power source, a piezoelectric actuator A, and a drive control apparatus 100 for controlling the driving of the piezoelectric actuator, wherein the drive control apparatus 100 is provided with a drive circuit 111 for supplying a drive signal SDR to the piezoelectric element of the vibrating body 12, a phase difference detection means 120 for detecting the phase difference indicating the vibration state of the vibrating body 12, a comparison voltage setting circuit 133 for correcting the target phase difference to be the target for the vibration state, and a drive frequency setting means 140 for comparing the phase difference with the target phase difference; and the piezoelectric actuator A can be driven with high efficiency independent of the drive voltage by modifying the drive frequency of the drive signal SDR so that the phase difference approaches the target phase difference based on the results of the above comparison.

摘要翻译： 一种电子设备，包括电源，压电致动器A和用于控制压电致动器的驱动的驱动控制装置100，其中驱动控制装置100设置有驱动电路111，用于将驱动信号SDR提供给压电 振动体12的元件，用于检测表示振动体12的振动状态的相位差的相位差检测单元120，将目标相位差校正为振动状态的目标的比较电压设定电路133以及 用于将相位差与目标相位差进行比较的驱动频率设定装置140; 并且通过修改驱动信号SDR的驱动频率，可以以与驱动电压无关的方式驱动压电致动器A，从而基于上述比较的结果，相位差接近目标相位差。

公开(公告)号：US07298066B2

公开(公告)日：2007-11-20

申请号：US11269682

申请日：2005-11-09

申请人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

IPC分类号： H01L41/08

CPC分类号： H02N2/103 ,  H01L41/0906 ,  H02N2/142

摘要： A drive apparatus for a piezoelectric actuator prevents locking drive frequency in a state of resonance due to harmonics. There is no need to provide external components to filter, and circuitry can easily be reduced in size. The drive apparatus has a phase difference-DC conversion circuit to detect vibrating state of the vibrating body, a comparison circuit, a harmonics detection circuit to detect that the vibrating body is resonating due to harmonics and outputting a harmonics detection signal, an integration circuit to control the frequency of the drive signal supplied to the piezoelectric element of the vibrating body, a variable frequency oscillation circuit, and a drive circuit. The integration circuit, the variable frequency oscillation circuit, and the drive circuit control the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is not outputted and continue to vary the frequency of the drive signal without controlling the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is being outputted.

摘要翻译： 用于压电致动器的驱动装置防止由于谐波而使驱动频率处于共振状态。 不需要提供外部组件进行过滤，电路可以轻松减小尺寸。 驱动装置具有检测振动体的振动状态的相位差 - 直流转换电路，比较电路，谐波检测电路，用于检测振动体由于谐波而谐振并输出谐波检测信号，积分电路 控制提供给振动体的压电元件的驱动信号的频率，可变频率振荡电路和驱动电路。 当不输出谐波检测信号时，积分电路，可变频率振荡电路和驱动电路基于比较电路的输出来控制驱动信号的频率，并且不继续改变驱动信号的频率而没有 当输出谐波检测信号时，基于比较电路的输出来控制驱动信号的频率。

公开(公告)号：US20060113863A1

公开(公告)日：2006-06-01

申请号：US11269682

申请日：2005-11-09

申请人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Akihiro Sawada ,  Yutaka Yamazaki ,  Makoto Okeya

IPC分类号： H01L41/08

CPC分类号： H02N2/103 ,  H01L41/0906 ,  H02N2/142

摘要： A drive apparatus for a piezoelectric actuator prevents locking drive frequency in a state of resonance due to harmonics. There is no need to provide external components to filter, and circuitry can easily be reduced in size. The drive apparatus has a phase difference-DC conversion circuit to detect vibrating state of the vibrating body, a comparison circuit, a harmonics detection circuit to detect that the vibrating body is resonating due to harmonics and outputting a harmonics detection signal, an integration circuit to control the frequency of the drive signal supplied to the piezoelectric element of the vibrating body, a variable frequency oscillation circuit, and a drive circuit. The integration circuit, the variable frequency oscillation circuit, and the drive circuit control the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is not outputted and continue to vary the frequency of the drive signal without controlling the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is being outputted.

摘要翻译： 用于压电致动器的驱动装置防止由于谐波而使驱动频率处于共振状态。 不需要提供外部组件进行过滤，电路可以轻松减小尺寸。 驱动装置具有检测振动体的振动状态的相位差 - 直流转换电路，比较电路，谐波检测电路，用于检测振动体由于谐波而谐振并输出谐波检测信号，积分电路 控制提供给振动体的压电元件的驱动信号的频率，可变频率振荡电路和驱动电路。 当不输出谐波检测信号时，积分电路，可变频率振荡电路和驱动电路基于比较电路的输出控制驱动信号的频率，并且继续改变驱动信号的频率而没有 当输出谐波检测信号时，基于比较电路的输出来控制驱动信号的频率。

公开(公告)号：US20050231184A1

公开(公告)日：2005-10-20

申请号：US11066557

申请日：2005-02-28

申请人： Takashi Kawaguchi ,  Joji Kitahara ,  Makoto Okeya

发明人： Takashi Kawaguchi ,  Joji Kitahara ,  Makoto Okeya

IPC分类号： G04C3/00 ,  G04C3/12 ,  G04C10/00 ,  G05F3/04 ,  H01L41/04 ,  H01L41/09 ,  H02N2/00

CPC分类号： H02N2/101 ,  G04C3/12 ,  G04C10/00 ,  H02N2/004 ,  H02N2/142

摘要： In an electronic device 1 comprising a battery 200 and a piezoelectric actuator A, a power source voltage before drive control is started is maintained by a sample holding circuit 102, a reference voltage is set by a reference voltage generating circuit 103 on the basis of the power source voltage, and a control circuit 106 stops driving when the power source voltage falls below a drive stop voltage as compared by a second comparison circuit 105, and begins driving the piezoelectric actuator A again when the power source voltage exceeds the reference voltage as compared by a first comparison circuit 104. Therefore, the device can be more easily reduced in size by using a small power source, and the driving time can be markedly reduced using an intermittent driving procedure that corresponds to the conditions of the battery voltage.

摘要翻译： 在包括电池200和压电致动器A的电子设备1中，驱动控制开始之前的电源电压由采样保持电路102保持，基准电压由基准电压发生电路103设定 电源电压时，与第二比较电路105相比，当电源电压降低到驱动停止电压以下时，控制电路106停止驱动，当电源电压超过参考电压时，再次开始驱动压电致动器A 通过第一比较电路104.因此，通过使用小电源可以更容易地减小装置的尺寸，并且可以使用对应于电池电压的条件的间歇驱动程序来显着降低驱动时间。

公开(公告)号：US07247970B2

公开(公告)日：2007-07-24

申请号：US11171183

申请日：2005-07-01

申请人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

发明人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

IPC分类号： H01L41/08

CPC分类号： H02N2/004 ,  H02N2/103 ,  H02N2/142

摘要： A frequency of a drive signal supplied to a piezoelectric element is swept within a specific range, a detection signal indicating the vibrating state of a vibrating member is detected, and the sweep speed of the drive signal frequency supplied to the piezoelectric element is controlled based on this detection signal. Thus, even if nonuniformities occur in the drive frequency of the piezoelectric element due to fluctuations in the surrounding temperature or the load, such nonuniformities can be overcome without any adjustments, and the piezoelectric element can be reliably driven. Also, since the sweep speed of the drive signal frequency is at a high speed when the vibrating member is in a non-drive state, needless drive signal output time during which the piezoelectric element cannot be driven can be reduced, needless power consumption can be curtailed, and nonuniformities in the drive speed of the driven object can also be reduced.

摘要翻译： 提供给压电元件的驱动信号的频率在特定范围内扫描，检测表示振动部件的振动状态的检测信号，并且基于以下方式控制提供给压电元件的驱动信号频率的扫描速度： 该检测信号。 因此，即使由于周围温度或负载的波动而在压电元件的驱动频率上发生不均匀性，也可以克服这种不均匀性而无需调整，可以可靠地驱动压电元件。 此外，由于当振动部件处于非驱动状态时驱动信号频率的扫描速度处于高速度，所以可以减少压电元件不能驱动的不必要的驱动信号输出时间，不需要功率消耗 削减驱动对象的驱动速度的不均匀性也可以减小。

公开(公告)号：US20060006762A1

公开(公告)日：2006-01-12

申请号：US11178462

申请日：2005-07-12

申请人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

发明人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

IPC分类号： H01L41/04

CPC分类号： H02N2/004 ,  H02N2/103 ,  H02N2/142

摘要： The frequency of a drive signal supplied to a piezoelectric actuator 91 is swept within a specific range, the consumption current of the piezoelectric actuator 91 is determined, and when the consumption current is equal to or greater than a reference value, the frequency of the drive signal supplied to the piezoelectric actuator 91 is shifted proportionate to a specific frequency and returned to its initial value, and the frequency sweep is continued. The resonance frequency component can be removed when the frequency of the drive signal supplied to the piezoelectric element is swept. Consequently, the piezoelectric element can be driven outside of the resonance frequency range at which the consumption current is highest, allowing extreme increases in the consumption current to be prevented and system failures due to the flow of an excessive consumption current to be avoided.

摘要翻译： 提供给压电致动器91的驱动信号的频率在特定范围内扫描，确定压电致动器91的消耗电流，并且当消耗电流等于或大于参考值时，驱动器的频率 提供给压电致动器91的信号与特定频率成比例地移位并返回到其初始值，并且频率扫描继续。 当提供给压电元件的驱动信号的频率被扫描时，可以去除共振频率分量。 因此，可以将压电元件驱动到消耗电流最高的共振频率范围之外，从而能够防止消耗电流的极大增加，并避免由于过量消耗电流的流动导致的系统故障。

公开(公告)号：US20060001330A1

公开(公告)日：2006-01-05

申请号：US11171183

申请日：2005-07-01

申请人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

发明人： Jun Matsuzaki ,  Takashi Kawaguchi ,  Reiko Nagahama

IPC分类号： H01L41/04

CPC分类号： H02N2/004 ,  H02N2/103 ,  H02N2/142

摘要： A frequency of a drive signal supplied to a piezoelectric element is swept within a specific range, a detection signal indicating the vibrating state of a vibrating member is detected, and the sweep speed of the drive signal frequency supplied to the piezoelectric element is controlled based on this detection signal. Thus, even if nonuniformities occur in the drive frequency of the piezoelectric element due to fluctuations in the surrounding temperature or the load, such nonuniformities can be overcome without any adjustments, and the piezoelectric element can be reliably driven. Also, since the sweep speed of the drive signal frequency is at a high speed when the vibrating member is in a non-drive state, needless drive signal output time during which the piezoelectric element cannot be driven can be reduced, needless power consumption can be curtailed, and nonuniformities in the drive speed of the driven object can also be reduced.

摘要翻译： 提供给压电元件的驱动信号的频率在特定范围内扫描，检测表示振动部件的振动状态的检测信号，并且基于以下方式控制提供给压电元件的驱动信号频率的扫描速度： 该检测信号。 因此，即使由于周围温度或负载的波动而在压电元件的驱动频率上发生不均匀性，也可以克服这种不均匀性而无需调整，可以可靠地驱动压电元件。 此外，由于当振动部件处于非驱动状态时驱动信号频率的扫描速度处于高速度，所以可以减少压电元件不能驱动的不必要的驱动信号输出时间，不需要功率消耗 削减驱动对象的驱动速度的不均匀性也可以减小。