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: | 1-十月-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 |
顯示於類別: | 期刊論文 |