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首页> 外文期刊>Review of Scientific Instruments >Switched capacitor charge pump reduces hysteresis of piezoelectric actuators over a large frequency range
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Switched capacitor charge pump reduces hysteresis of piezoelectric actuators over a large frequency range

机译：开关电容电荷泵可在较大频率范围内降低压电执行器的磁滞

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摘要

Piezoelectric actuators exhibit large hysteresis between the applied voltage and their displacement. A switched capacitor charge pump is proposed to reduce hysteresis and linearize the movement of piezoelectric actuators. By pumping the same amount of charges into the piezoelectric actuator quantitatively, the actuator will be forced to change its length with constant step. Compared with traditional voltage and charge driving, experimental results demonstrated that the piezoelectric stack driven by the charge pump had less hysteresis over a large frequency range, especially at ultralow frequencies. A hysteresis of less than 2.01% was achieved over a frequency range of 0.01–20 Hz using the charge pump driver. © 2010 American Institute of Physics Article Outline INTRODUCTION THEORETICAL ANALYSIS Principle of the traditional voltage and charge drives Principle of switched capacitor charge pump PERFORMANCE TESTS OF THE THREE KINDS OF AMPLIFIERS Experiments on the traditional voltage and charge controllers Experiments on the switched capacitor charge pump Experimental setup Experimental results and data analysis CONCLUSION
机译：压电致动器在施加的电压和其位移之间表现出较大的磁滞。提出了一种开关电容器电荷泵，以减少磁滞并线性化压电致动器的运动。通过定量地将相同数量的电荷泵入压电致动器，致动器将被迫以恒定步长改变其长度。与传统的电压和电荷驱动相比，实验结果表明，由电荷泵驱动的压电堆栈在较大的频率范围内具有较小的磁滞现象，尤其是在超低频范围内。使用电荷泵驱动器在0.01–20 Hz的频率范围内实现了小于2.01％的磁滞。 ©2010美国物理研究所文章大纲简介理论分析传统电压和电荷驱动器原理开关电容器电荷泵的原理三种放大器的性能测试传统电压和电荷控制器的实验开关电容器电荷泵的实验实验装置实验结果和数据分析结论

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