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1. 发明申请

WO2005097508A3 PIEZOELECTRIC DEVICES AND METHODS AND CIRCUITS FOR DRIVING SAME 审中-公开
标题翻译：压电装置及其驱动方法和电路
公开(公告)号：WO2005097508A3
公开(公告)日：2007-07-19
申请号：PCT/US2005011342
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： F04B17/00 , B41J29/38 , F04B43/00 , F04B43/04
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）为具有压电致动器（14）的装置（10）产生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，使得对于包括波形的周期的多个点中的每一个，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，波形形状数据是通过求解波形方程式来制备的，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在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。

2. 发明申请

WO2005098984A2 PIEZOELECTRIC DEVICES AND METHODS AND CIRCUITS FOR DRIVING SAME 审中-公开
标题翻译：压电装置及其驱动方法和电路
公开(公告)号：WO2005098984A2
公开(公告)日：2005-10-20
申请号：PCT/US2005011579
申请日：2005-04-04
申请人： PAR TECHNOLOGIES LLC , VOGELEY JAMES , SCHEMMANN MARCEL F C , JONES GARTH S
发明人： VOGELEY JAMES , SCHEMMANN MARCEL F C , JONES GARTH S
IPC分类号： F04B43/04 , H01L41/04 , H01L41/09
CPC分类号： F04B43/046 , H01L41/042
摘要： A drive circuit (18) produces a drive signal for a pump (10) having a piezoelectric actuator (14), with the piezoelectric actuator (14) forming a part of the drive circuit (18) and serving to shape a waveform of the drive signal. The drive circuit (18) comprises a pulse generator (100) which generates pulses; a converter circuit (102) which receives the pulses and produces charge packets at a rate which equals a desired drive frequency; and, the piezoelectric actuator (14). The piezoelectric actuator (14) receives the charge packets and, by its capacitive nature, integrates the charge packets to shape the waveform of the drive signal. Preferably, the piezoelectric actuator (14) integrates the charge packets to yield a drive field that approximates a sine wave. In one non-limiting example embodiment, the pulse generator (100) comprises a microcontroller-based pulsed width modulator (PWM) circuit (116) and the converter circuit (102) comprises a flyback circuit.
摘要翻译：驱动电路（18）产生用于具有压电致动器（14）的泵（10）的驱动信号，压电致动器（14）形成驱动电路（18）的一部分并且用于对驱动器的波形进行整形信号。驱动电路（18）包括产生脉冲的脉冲发生器（100）转换器电路（102），其接收所述脉冲并以等于所需驱动频率的速率产生电荷分组; 和压电致动器（14）。压电致动器（14）接收电荷分组，并通过其电容性质对电荷分组进行积分，以形成驱动信号的波形。优选地，压电致动器（14）积分电荷分组以产生近似正弦波的驱动场。在一个非限制性示例实施例中，脉冲发生器（100）包括基于微控制器的脉冲宽度调制器（PWM）电路（116），并且转换器电路（102）包括反激电路。

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