DRIVING DEVICE AND DRIVING METHOD OF CAPACITIVE LOAD AND LIQUID JET PRINTING APPARATUS
    24.
    发明申请
    DRIVING DEVICE AND DRIVING METHOD OF CAPACITIVE LOAD AND LIQUID JET PRINTING APPARATUS 有权
    驱动装置及驱动装置和液体喷射装置的方法

    公开(公告)号:US20090140780A1

    公开(公告)日:2009-06-04

    申请号:US12325915

    申请日:2008-12-01

    IPC分类号: H03K3/00

    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。

    LIQUID JET APPARATUS
    25.
    发明申请
    LIQUID JET APPARATUS 有权
    液体喷射装置

    公开(公告)号:US20090167798A1

    公开(公告)日:2009-07-02

    申请号:US12340895

    申请日:2008-12-22

    IPC分类号: B41J2/015 H02N2/06

    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 lowpass 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,其中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,其适于基于驱动波形信号的数据修改调制器的脉冲调制的调制周期。

    EXCISION DEVICE AND AIR-BUBBLE DETECTING METHOD
    26.
    发明申请
    EXCISION DEVICE AND AIR-BUBBLE DETECTING METHOD 审中-公开
    实验装置和气泡检测方法

    公开(公告)号:US20110213396A1

    公开(公告)日:2011-09-01

    申请号:US13035156

    申请日:2011-02-25

    IPC分类号: A61B17/3203

    摘要: An excision device configured to excise living tissue by ejecting liquid includes: a supplying unit configured to supply liquid to be ejected; a chamber configured to be filled with the supplied liquid; an ejection nozzle connected to the chamber; a drive member configured to be deformed in the direction to reduce the volume of the chamber when a drive voltage is applied more than a case where the drive voltage is not applied; a liquid ejecting unit configured to eject the liquid in the chamber in a pulsed manner from the ejection nozzle by applying the drive voltage to the drive member in a state in which the chamber is filled with the supplied liquid; and an air-bubble detecting unit configured to detect air bubbles in the chamber by detecting an electric current flowing in the drive member when the drive voltage is applied to the drive member.

    摘要翻译: 构造为通过喷射液体来切除生物体组织的切除装置包括:供给单元,其构造成供给待喷射的液体; 被配置为填充所提供的液体的室; 连接到所述室的喷嘴; 驱动构件,其构造成在施加驱动电压的情况下比在不施加驱动电压的情况下朝向减小室的体积的方向变形; 液体喷射单元,被配置为在所述腔室填充有所供应的液体的状态下,通过向所述驱动构件施加驱动电压,以脉冲方式从所述喷射喷嘴喷射所述腔室中的液体; 以及气泡检测单元,其构造成当驱动电压施加到驱动构件时,通过检测在驱动构件中流动的电流来检测室内的气泡。

    FLUID EJECTION SYSTEM, FLUID EJECTION SYSTEM DRIVE METHOD, AND SURGICAL APPARATUS
    27.
    发明申请
    FLUID EJECTION SYSTEM, FLUID EJECTION SYSTEM DRIVE METHOD, AND SURGICAL APPARATUS 审中-公开
    流体喷射系统,流体喷射系统驱动方法和手术装置

    公开(公告)号:US20100111708A1

    公开(公告)日:2010-05-06

    申请号:US12606470

    申请日:2009-10-27

    IPC分类号: F04B49/06

    CPC分类号: F04B43/046 A61B17/3203

    摘要: A fluid ejection system includes: a pulsation generation section which, including a fluid chamber, a diaphragm which changes a volume of the fluid chamber, and a piezoelectric element which drives the diaphragm, pulsatively ejects a fluid from a nozzle; and a control apparatus including a pressure generation section which supplies the fluid to the fluid chamber at a predetermined pressure, a drive waveform generation section which inputs a drive waveform into the piezoelectric element, and a load detection section which detects a load of the pressure generation section, wherein in the event that the load detection section has detected a load abnormality of the pressure generation section, a fluid discharge pressure amplitude of the pulsation generation section or a fluid supply pressure of the pressure generation section is made higher than at a normal drive time.

    摘要翻译: 流体喷射系统包括:包括流体室的脉动产生部分,改变流体室的体积的膜片和驱动膜片的压电元件,从喷嘴脉动地喷出流体; 以及控制装置,包括将流体以预定压力供给流体室的压力产生部,将驱动波形输入到压电元件的驱动波形生成部,以及检测压力产生负荷的负载检测部 其特征在于,在所述负荷检测部检测到所述压力产生部的负荷异常的情况下,使所述脉动发生部的流体排出压力振幅或所述压力产生部的流体供给压力高于正常驱动 时间。

    LOAD DRIVING CIRCUIT AND LOAD DRIVING METHOD
    28.
    发明申请
    LOAD DRIVING CIRCUIT AND LOAD DRIVING METHOD 有权
    负载驱动电路和负载驱动方法

    公开(公告)号:US20090309424A1

    公开(公告)日:2009-12-17

    申请号:US12483077

    申请日:2009-06-11

    IPC分类号: H02J1/00

    摘要: A load driving circuit that generates a desired voltage waveform to drive a load includes a target voltage waveform output section that outputs a target voltage waveform to be applied to the load. Power supply sections generate electrical power with voltage values different from each other. Negative feedback control sections between the power supply sections and the load supply electrical power from the corresponding power supply sections to the load and execute negative feedback control of a value of a voltage applied to the load for matching the voltage value and the target voltage waveform. A power supply connection section selects one of the power supply sections based on the value of the voltage applied to the load or the voltage value of the target voltage waveform and connects the selected power supply section to the load and disconnects the rest of the power supply sections from the load.

    摘要翻译: 产生用于驱动负载的期望电压波形的负载驱动电路包括输出要施加到负载的目标电压波形的目标电压波形输出部。 电源部分产生彼此不同电压值的电力。 电源部分之间的负反馈控制部分和从相应的电源部分到负载的负载供电,并且对施加到负载的电压值进行负反馈控制,以匹配电压值和目标电压波形。 电源连接部分基于施加到负载的电压的值或目标电压波形的电压值来选择一个电源部分,并且将所选择的电源部分连接到负载并断开电源的其余部分 来自负载的部分。

    LOAD DRIVING CIRCUIT AND LOAD DRIVING METHOD
    29.
    发明申请
    LOAD DRIVING CIRCUIT AND LOAD DRIVING METHOD 有权
    负载驱动电路和负载驱动方法

    公开(公告)号:US20110298291A1

    公开(公告)日:2011-12-08

    申请号:US13211110

    申请日:2011-08-16

    IPC分类号: H02J1/00

    摘要: A load driving circuit that generates a desired voltage waveform to drive a load includes a target voltage waveform output section that outputs a target voltage waveform to be applied to the load. Power supply sections generate electrical power with voltage values different from each other. Negative feedback control sections between the power supply sections and the load supply electrical power from the corresponding power supply sections to the load and execute negative feedback control of a value of a voltage applied to the load for matching the voltage value and the target voltage waveform. A power supply connection section selects one of the power supply sections based on the value of the voltage applied to the load or the voltage value of the target voltage waveform and connects the selected power supply section to the load and disconnects the rest of the power supply sections from the load.

    摘要翻译: 产生用于驱动负载的期望电压波形的负载驱动电路包括输出要施加到负载的目标电压波形的目标电压波形输出部。 电源部分产生彼此不同电压值的电力。 电源部分之间的负反馈控制部分和从相应的电源部分到负载的负载供电,并且对施加到负载的电压值进行负反馈控制,以匹配电压值和目标电压波形。 电源连接部分基于施加到负载的电压的值或目标电压波形的电压值来选择一个电源部分,并且将所选择的电源部分连接到负载并断开电源的其余部分 来自负载的部分。