发明名称 |
Frequency-control-type piezo actuator driving circuit and method of driving the same |
摘要 |
The present invention relates to a frequency-control-type piezo actuator driving circuit. The frequency-control-type piezo actuator driving circuit includes a piezo actuator that is driven by a constant amplitude of driving voltage pulse; a piezo driver that is connected to the piezo actuator so as to drive the piezo actuator; a frequency controller that is connected to the piezo driver so as to measure currents consumed when the piezo driver drives the piezo actuator, to detect a frequency corresponding to the maximum current among the measured currents, and to generate a frequency control signal corresponding to the detected frequency; and a frequency synthesizer that fixes a frequency of the piezo actuator in accordance with the frequency control signal of the frequency controller and generates the fixed frequency to the piezo driver.
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申请公布号 |
US7471029(B2) |
申请公布日期 |
2008.12.30 |
申请号 |
US20060435744 |
申请日期 |
2006.05.18 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
HA CHANG WOO;GONG JUNG CHUL;SHIN SANG CHEOL;MIN BYOUNG OWN |
分类号 |
H01L41/08 |
主分类号 |
H01L41/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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