专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110068657A1 PIEZOELECTRIC ACTUATOR DRIVER CIRCUIT 有权
标题翻译：压电致动器驱动电路
公开(公告)号：US20110068657A1
公开(公告)日：2011-03-24
申请号：US12883291
申请日：2010-09-16
申请人： Midori SUNAGA , Toshinari TABATA , Gaku KAMITANI
发明人： Midori SUNAGA , Toshinari TABATA , Gaku KAMITANI
IPC分类号： H01L41/09
CPC分类号： H01L41/042
摘要： In a piezoelectric-actuator driving circuit for driving a piezoelectric actuator, an amplifier circuit amplifies a signal output from a feedback circuit and supplies the amplified signal to a non-inverting amplifier circuit and an inverting amplifier circuit. The non-inverting amplifier circuit amplifies the output voltage of the amplifier circuit with a predetermined gain and applies the amplified voltage to a first terminal of the piezoelectric actuator. The inverting amplifier circuit inverts and amplifies the output voltage of the amplifier circuit with the same gain as that of the non-inverting amplifier circuit and then applies the amplified voltage to a second terminal of the piezoelectric actuator through resistors. The feedback circuit amplifies a difference between voltages at respective ends of the resistor and supplies the amplified difference to the amplifier circuit.
摘要翻译：在用于驱动压电致动器的压电致动器驱动电路中，放大器电路放大从反馈电路输出的信号，并将放大的信号提供给非反相放大器电路和反相放大器电路。非反相放大器电路以预定的增益放大放大器电路的输出电压，并将放大的电压施加到压电致动器的第一端。反相放大器电路以与非反相放大器电路相同的增益来反相放大放大器电路的输出电压，然后通过电阻将放大的电压施加到压电致动器的第二端。反馈电路放大电阻器各端的电压差，并将放大的差值提供给放大器电路。

2. 发明申请

US20120293041A1 PIEZOELECTRIC ACTUATOR DRIVER CIRCUIT 有权
标题翻译：压电致动器驱动电路
公开(公告)号：US20120293041A1
公开(公告)日：2012-11-22
申请号：US13563774
申请日：2012-08-01
申请人： Gaku KAMITANI , Toshinari TABATA
发明人： Gaku KAMITANI , Toshinari TABATA
IPC分类号： H01L41/09
CPC分类号： H02N2/008 , F04D27/00 , F04D33/00
摘要： In a piezoelectric actuator driver circuit, a resistor provided to detect current is inserted in a current path for a piezoelectric actuator. A signal of a decreased voltage of the resistor is subjected to positive feedback to an amplifier circuit via a band-pass filter. An output signal of the amplifier circuit is subjected to negative feedback to the amplifier circuit via a band-elimination filter. The band-pass filter allows a signal of a fundamental resonant frequency of a piezoelectric device, which includes the piezoelectric actuator, to pass therethrough, and the band-elimination filter blocks the signal of the fundamental resonant frequency. Thus, a loop gain at a higher-order resonant frequency with respect to the fundamental resonant frequency becomes very low and a higher-order resonant mode can be effectively suppressed.
摘要翻译：在压电致动器驱动电路中，将用于检测电流的电阻插入用于压电致动器的电流通路中。电阻器的电压降低的信号经由带通滤波器对放大器电路进行正反馈。放大器电路的输出信号通过带除滤波器对放大器电路进行负反馈。带通滤波器允许包括压电致动器的压电装置的基本共振频率的信号通过，带阻滤波器阻挡基本谐振频率的信号。因此，相对于基本谐振频率的高阶谐振频率的环路增益变得非常低，并且可以有效地抑制高阶谐振模式。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式