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2. 发明申请

WO2005097508A2 PIEZOELECTRIC DEVICES AND METHODS AND CIRCUITS FOR DRIVING SAME 审中-公开
标题翻译：压电元件及其驱动方法及电路
公开(公告)号：WO2005097508A2
公开(公告)日：2005-10-20
申请号：PCT/US2005/011342
申请日：2005-04-04
申请人： PAR TECHNOLOGIES, LLC , VOGELEY, James , BLOUNT, Jim , JONES, Garth, S.
发明人： VOGELEY, James , BLOUNT, Jim , JONES, Garth, S.
IPC分类号： B41J29/38
CPC分类号： F04B43/0081 , F04B43/046 , F04B2201/0201 , F04B2205/03
摘要： A drive circuit (18) produces a drive signal having a waveform of a predetermined waveform shape for a device (10) having a piezoelectric actuator (14). The drive circuit (14) includes a memory (140) which stores waveform shape data which is utilized by the drive circuit in producing the drive signal. The drive circuit utilizes the waveform shape data so that, for each of plural points comprising a period of the waveform, the drive signal has an appropriate amplitude for the predetermined waveform shape. The waveform shape data has preferably been prepared to optimize one or more operational parameter(s) of the device. Preferably the waveform shape data has been prepared by solving a waveform equation, the waveform equation having coefficients determined to optimize at least one operational parameter of the device. The number of coefficients determined for the waveform equation depends on the number of harmonics of the waveform that are within a bandwidth of the device. Other aspects concerns devices which utilize the drive circuit, methods for operating devices, the memory (212) which is utilized by the drive circuit (e.g., the drive circuit which produces the drive signal for the device having the piezoelectric actuator) to store the waveform shape data, as well as apparatus and method for generating the optimized waveform shape data.
摘要翻译：驱动电路（18）产生对于具有压电致动器（14）的装置（10）具有预定波形形状的波形的驱动信号。驱动电路（14）包括存储器（140），存储由驱动电路用于产生驱动信号的波形形状数据。驱动电路使用波形形状数据，使得对于包括波形周期的多个点中的每个点，驱动信号对于预定波形形状具有适当的幅度。优选地，波形形状数据被准备好优化装置的一个或多个操作参数。优选地，通过求解波形方程式来准备波形形状数据，波形方程式具有被确定为优化装置的至少一个操作参数的系数。为波形方程确定的系数数取决于设备带宽内波形的谐波数。其他方面涉及利用驱动电路的装置，用于操作装置的方法，由驱动电路利用的存储器（212）（例如，产生具有压电致动器的装置的驱动信号的驱动电路）来存储波形形状数据，以及用于生成优化的波形形状数据的装置和方法。

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