International Journal of Advanced Robotic Systems | |
A dual-stage low-power converter driving for piezoelectric actuator applied in flapping-wing micro aerial vehicles | |
GuoliKong1  | |
关键词: Flapping-wing micro aerial vehicles; piezoelectric actuator; flyback converter; half-bridge drive stage; compact size; low mass; high-power density; | |
DOI : 10.1177/1729881419851710 | |
学科分类:自动化工程 | |
来源: InTech | |
【 摘 要 】
It is essential for flapping-wing micro aerial vehicles to have a driver with compact size, low mass, and high conversion efficiency in low-power application. In this article, a dual-stage low-power converter driving for piezoelectric actuator was designed and implemented, which can be applied in flapping-wing micro aerial vehicles. Using the âsimultaneous driveâ method, an Residual Current Devices (RCD) passive snubber flyback DC/DC step-up converter cascaded with a bidirectional active half-bridge drive stage is designed. The flyback converter is controlled by pulse width modulation in discontinuous conduction mode to ensure the stability of the output high voltage. The half-bridge drive stage takes the approach of comparing the output voltage signal with an ideal waveform lookup table to generate arbitrary unipolar signals. The proposed converter has a weight of 345 mg, a size of 285 mm2 (19 Ã 15 mm2), a maximum output power of 500 mW, and a maximum conversion efficiency of 64.5%. An experiment driving for piezoelectric actuator was performed to observe the displacement generated by the converter. According to the experimental results, this converter can be applied in flapping-wing micro aerial vehicles.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910254198035ZK.pdf | 769KB | download |