公开(公告)号：US08653718B2

公开(公告)日：2014-02-18

申请号：US13464638

申请日：2012-05-04

申请人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

发明人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136

摘要： A power generation unit includes: a deformation member which is deformed by switching a deformation direction; a piezoelectric element which is installed to the deformation member; a pair of electrodes which are installed to the piezoelectric element; an inductor which is installed between the pair of the electrodes and which together with a capacitive component of the piezoelectric element constitutes a resonance circuit; a switch which is connected in series to the inductor; a full bridge rectifier which is installed between the pair of the electrodes to rectify an AC current generated by the piezoelectric element; a voltage detection circuit which detects potentials of an anode and cathode of a diode included in the full bridge rectifier; and a controller which allows the switch to be in an ON state for a predetermined time interval based on an output signal of the voltage detection circuit.

摘要翻译： 发电单元包括：通过切换变形方向而变形的变形构件; 安装在变形构件上的压电元件; 安装在压电元件上的一对电极; 安装在一对电极之间并与压电元件的电容部件一起构成谐振电路的电感器; 与电感器串联连接的开关; 全桥整流器，安装在一对电极之间，以对由压电元件产生的交流电进行整流; 电压检测电路，其检测包括在全桥整流器中的二极管的阳极和阴极的电位; 以及控制器，其基于电压检测电路的输出信号使开关处于接通状态达预定时间间隔。

公开(公告)号：US08604673B2

公开(公告)日：2013-12-10

申请号：US13298999

申请日：2011-11-17

申请人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsuya Hirabayashi

发明人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsuya Hirabayashi

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136 ,  H02N2/186

摘要： A power generating device which includes a transformation member that is transformed by receiving a transformation force in a transformation direction, a first piezoelectric device that is disposed on the transformation member, a second piezoelectric device that is disposed on the transformation member, an inductor comprising a resonance circuit including the first piezoelectric device, a switch that is disposed in the resonance circuit, and a control unit that controls the switch to be in a conductive state for a predetermined period by detecting a voltage generated in the second piezoelectric device as the second piezoelectric device is transformed in response to the transformation force being applied to the transformation member.

摘要翻译： 一种发电装置，包括通过接收变换方向的变换力而变形的变换构件，配置在变换构件上的第一压电装置，配置在变换构件上的第二压电装置，电感器，包括： 谐振电路，包括第一压电器件，布置在谐振电路中的开关，以及控制单元，其通过检测在第二压电器件中产生的电压作为第二压电器来控制开关处于导通状态一段预定时间段 响应于施加到转换构件的变换力而转换装置。

公开(公告)号：US08604666B2

公开(公告)日：2013-12-10

申请号：US13295932

申请日：2011-11-14

申请人： Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsushi Oshima

发明人： Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsushi Oshima

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136

摘要： A power generating device includes: a piezoelectric member that is formed from a piezoelectric material; one pair of electrodes that are installed to the piezoelectric member; a transformation unit that repeatedly transforms the piezoelectric member; an inductor that is installed between the one pair of electrodes and configures a resonance circuit together with a capacitive component of the piezoelectric member; a switch that is connected to the inductor in series; and a switch control unit that connects the switch when a transformation direction of the piezoelectric member is switched, and cuts off the switch when a time corresponding to a half period of a resonance period of the resonance circuit elapses.

摘要翻译： 发电装置包括：由压电材料形成的压电元件; 安装在压电元件上的一对电极; 变换单元，其重复地变换压电构件; 电感器，其安装在所述一对电极之间，并且与所述压电部件的电容部件一起构成谐振电路; 串联连接到电感器的开关; 以及切换控制单元，其在切换压电构件的变形方向时连接开关，并且在与谐振电路的共振周期的半周期相对应的时间过去时切断开关。

公开(公告)号：US08690281B2

公开(公告)日：2014-04-08

申请号：US13295971

申请日：2011-11-14

申请人： Atsushi Oshima ,  Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Atsushi Oshima ,  Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： B41J29/38

CPC分类号： B41J2/04588 ,  B41J2/04541 ,  B41J2/04573 ,  B41J2/04581

摘要： A modulated signal is generated by performing pulse modulation of a drive waveform signal that is a reference for a drive signal to be applied to a capacitive load, and the drive signal is generated by performing power amplification of the acquired modulated signal and then smoothing the power-amplified modulated signal. Then, negative feedback of the drive signal applied to the capacitive load is applied to the drive waveform signal that is the reference for the drive signal. At this time, a predetermined analog compensation process for smoothing gain characteristics in a frequency band included in the drive signal is performed for the drive signal, then the acquired signal is converted into a digital signal, and negative feedback of the digital signal is applied to the drive waveform signal.

摘要翻译： 通过对驱动信号进行脉冲调制来生成调制信号，该驱动波形信号是作为对电容性负载的驱动信号的基准，通过对所获取的调制信号进行功率放大，然后使功率平滑化来生成驱动信号 放大调制信号。 然后，施加到电容性负载的驱动信号的负反馈被施加到作为驱动信号的参考的驱动波形信号。 此时，对驱动信号执行用于平滑驱动信号中包括的频带中的增益特性的预定的模拟补偿处理，然后将获取的信号转换为数字信号，并将数字信号的负反馈应用于 驱动波形信号。

公开(公告)号：US08773098B2

公开(公告)日：2014-07-08

申请号：US13420679

申请日：2012-03-15

申请人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： H02M3/156

CPC分类号： H03K3/012 ,  B41J2/04541 ,  B41J2/04581 ,  H02M3/156 ,  H02M3/157

摘要： Operation of a digital power amplifier for power amplification of a modulated signal is stopped in a period in which a voltage value of a drive signal applied to a capacitive load is constant, to thereby suppress power loss. The power amplification is stopped either when half a period of time when the modulated signal in a first voltage state maintains the first voltage state elapses or when half a period of time when the modulated signal in a second voltage state which is lower in voltage than the first voltage state maintains the second voltage state elapses. Accordingly, when electric current does not flow in a inductor of a low pass filter, it is possible to stop the power amplification. Thus, it is possible to prevent generation of voltage fluctuation in the drive signal due to an electromotive force caused by a self-induction phenomenon of the inductor.

摘要翻译： 在施加到电容性负载的驱动信号的电压值恒定的时段内停止用于调制信号的功率放大的数字功率放大器的操作，从而抑制功率损耗。 当第一电压状态下的调制信号保持第一电压状态或当电压低于第二电压状态的第二电压状态的调制信号的半个时间段的半个时间段停止功率放大， 第一电压状态保持第二电压状态已经过去。 因此，当电流不在低通滤波器的电感器中流动时，可以停止功率放大。 因此，可以防止由电感器的自感现象引起的电动势引起的驱动信号中的电压波动的产生。

公开(公告)号：US08757749B2

公开(公告)日：2014-06-24

申请号：US13351770

申请日：2012-01-17

申请人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

发明人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

IPC分类号： B41J29/38 ,  B41J2/045

CPC分类号： B05B12/02 ,  A61J3/07 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/04581 ,  B41J2/17503

摘要： A liquid ejection device, includes: a drive waveform signal output circuit which outputs a drive waveform signal to serve as a reference for the drive signal; a modulator which pulse-modulates the drive waveform signal and thus generates a first modulated signal and a second modulated signal having a different phase from the first modulated signal within a range from greater than 90 degrees to smaller than 270 degrees; a first digital power amplifier; a second digital power amplifier a first low pass filter which performs low pass filtering of the first amplified digital signal and thus generates a first demodulated signal; and a second low pass filter which performs low pass filtering of the second amplified digital signal and thus generates a second demodulated signal; wherein the first demodulated signal and the second demodulated signal are combined and applied as the drive signal to the capacitive load.

摘要翻译： 一种液体喷射装置，包括：驱动波形信号输出电路，其输出用作驱动信号的基准的驱动波形信号; 调制器，其在大于90度至小于270度的范围内脉冲调制驱动波形信号，从而产生具有与第一调制信号不同相位的第一调制信号和第二调制信号; 第一个数字功率放大器; 第二数字功率放大器，对所述第一放大数字信号进行低通滤波并由此产生第一解调信号的第一低通滤波器; 以及第二低通滤波器，对第二放大数字信号进行低通滤波，从而产生第二解调信号; 其中第一解调信号和第二解调信号被组合并作为驱动信号施加到电容性负载。

公开(公告)号：US08376486B2

公开(公告)日：2013-02-19

申请号：US12340895

申请日：2008-12-22

申请人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

发明人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

IPC分类号： B41J29/38 ,  H03F3/38

CPC分类号： B41J2/04501 ,  B41J2/04508 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596 ,  B41J2/07 ,  H01L41/042 ,  H03F3/2175

摘要： A liquid jet apparatus according to the present invention includes a drive waveform generator adapted to generate a drive waveform signal, a modulator adapted to execute pulse modulation on the drive waveform signal, a digital power amplifier adapted to power-amplify the modulated signal, on which the pulse modulation is executed by the modulator, with a pair of switching elements push-pull coupled with each other, a low pass filter adapted to smooth the amplified digital signal obtained by the power-amplification of the digital power amplifier, and a modulation period modification circuit adapted to modify a modulation period of the pulse modulation of the modulator based on data of the drive waveform signal.

摘要翻译： 根据本发明的液体喷射装置包括适于产生驱动波形信号的驱动波形发生器，适于对驱动波形信号执行脉冲调制的调制器，适于对已调制信号进行功率放大的数字功率放大器， 脉冲调制由调制器执行，一对开关元件彼此相互推挽，一个适合于平滑由数字功率放大器的功率放大而获得的放大数字信号的低通滤波器，以及调制周期 修改电路，其适于基于所述驱动波形信号的数据修改所述调制器的脉冲调制的调制周期。

公开(公告)号：US07746127B2

公开(公告)日：2010-06-29

申请号：US12325915

申请日：2008-12-01

申请人： Shinichi Miyazaki ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

发明人： Shinichi Miyazaki ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

IPC分类号： H03K3/00

CPC分类号： B41J2/04596 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  H03F3/217 ,  H03K7/08

摘要： A driving device of a capacitive load includes a modulator that executes pulse modulation on a drive waveform signal. An inductor performs low-pass filtering on the modulated drive waveform signal and outputs the low-pass filtered signal as a drive signal towards a load capacitor as the capacitive load. A load selection control circuit selects a load capacitor and a dummy load capacitor to be connected to the inductor so that a sum of the capacitances of the selected load capacitor and dummy load capacitor is kept within a predetermined range. A feedback circuit executes a filtering process on the drive signal so that a frequency characteristic of a passing band of the drive signal becomes substantially flat. The resulting signal is provided to the modulator as a feedback signal. The modulator executes the pulse modulation on a difference value between the drive waveform signal and the feedback signal.

摘要翻译： 电容性负载的驱动装置包括对驱动波形信号执行脉冲调制的调制器。 电感器对调制驱动波形信号进行低通滤波，并将低通滤波信号作为驱动信号输出到负载电容器作为电容性负载。 负载选择控制电路选择要连接到电感器的负载电容器和虚拟负载电容器，使得所选择的负载电容器和虚拟负载电容器的电容之和保持在预定范围内。 反馈电路对驱动信号执行滤波处理，使得驱动信号的通带的频率特性变得基本平坦。 所得信号作为反馈信号提供给调制器。 调制器对驱动波形信号和反馈信号之间的差值执行脉冲调制。

公开(公告)号：US08941289B2

公开(公告)日：2015-01-27

申请号：US13619729

申请日：2012-09-14

申请人： Atsuya Hirabayashi ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Yasuhiro Ono

发明人： Atsuya Hirabayashi ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Yasuhiro Ono

IPC分类号： H01L41/113 ,  H02N2/18

CPC分类号： H01L41/1136 ,  H02N2/181 ,  H02N2/188

摘要： A power generation unit includes: a deforming member adapted to deform while switching a deformation direction; a piezoelectric device provided to the deforming member, and having a pair of electrodes; a displacement sensor adapted to detect a deformation amount of the deforming member, and then output deformation amount information as information related to the deformation amount; an inductor electrically connected to the piezoelectric device; a switch disposed between the piezoelectric device and the inductor; and a switch control section adapted to control the switch so as to set the pair of electrodes to a shorted state for a predetermined period of time when the deformation amount exceeds a predetermined level.

摘要翻译： 发电单元包括：适于在切换变形方向时变形的变形构件; 设置在变形部件上的压电元件，具有一对电极; 位移传感器，适于检测变形构件的变形量，然后输出变形量信息作为与变形量有关的信息; 电感器，其电连接到所述压电器件; 设置在压电器件和电感器之间的开关; 以及开关控制部，其适于控制所述开关，以便在所述变形量超过预定水平时，将所述一对电极设定为短路状态达预定时间段。

公开(公告)号：US08308254B2

公开(公告)日：2012-11-13

申请号：US12389525

申请日：2009-02-20

申请人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

发明人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

IPC分类号： B41J29/38

CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596

摘要： A liquid jet apparatus according to the invention is a liquid jet apparatus adapted to emit a jet of a liquid by driving an actuator of a liquid jet head with a drive signal including a digital power amplifier and a low pass filter provided to the liquid jet head so as to correspond to the actuator, and adapted to power-amplify and smooth a modified signal from a control circuit to form the drive signal, wherein the low pass filter is coupled directly with the actuator, and the digital power amplifier is provided with a pair of switching elements and a gate drive circuit, and ON-OFF controls the gate drive circuit based on print data, thereby performing one of output and halt of the drive signal.

摘要翻译： 根据本发明的液体喷射装置是一种液体喷射装置，其适于通过驱动液体喷射头的致动器来发射液体射流，该驱动信号包括提供给液体喷射头的数字功率放大器和低通滤波器 以便对应于所述致动器，并且适于对来自控制电路的修改信号进行功率放大和平滑以形成所述驱动信号，其中所述低通滤波器直接与所述致动器耦合，并且所述数字功率放大器设置有 一对开关元件和栅极驱动电路，并且ON-OFF基于打印数据控制栅极驱动电路，从而执行驱动信号的输出和停止之一。