標題: A Multicell Linear Power Amplifier for Driving Piezoelectric Loads
作者: Jeng, Shyr-Long
Tung, Yung-Cheng
機械工程學系
Department of Mechanical Engineering
關鍵字: Piezoelectric device;power amplifiers;switching amplifiers
公開日期: 1-Oct-2008
摘要: A multicell amplifier is developed by connecting floating signal modules in series to drive piezoelectric devices. The amplifier generates a high voltage gain by summing the individual module gains. The bandwidth equals that of a single module. The multicell amplifier provides a means of achieving high power and can divide the total power dissipation among the modules, because each module delivers the same output voltage and current. A prototype circuit that consists of six floating signal modules exhibits precise linear operation over a wide range of input frequencies and capacitive loads. The circuit provides a 200-V output swing with a corner frequency of around 100 kHz at a driving capacitive load of 0.1 mu F. The slew rate is as high as 115 V/mu s, and the maximum output current is +/- 2.6 A. The practicality and performance of the presented modular implementation concepts were verified by the close match between the simulated and experimental results.
URI: http://dx.doi.org/10.1109/TIE.2008.926709
http://hdl.handle.net/11536/8281
ISSN: 0278-0046
DOI: 10.1109/TIE.2008.926709
期刊: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume: 55
Issue: 10
起始頁: 3644
結束頁: 3652
Appears in Collections:Articles


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