Design of a power amplifer with energy recovery strategy for piezoelectric actuators

Proceedings of 2011 International Conference on Fluid Power and Mechatronics Pub Date : 2011-10-17 DOI:10.1109/FPM.2011.6045758

Huisheng Liang, Zongxia Jiao, Rui Zhang, Xutian Wang, Xiaoxu Liu

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引用次数: 5

Abstract

This paper presents an analog voltage power amplifier with energy recovery strategy to drive piezoelectric actuators which are for a new piezoelectric servo pump. The whole power amplifier is consisted of the direct current power supply, linear amplifier circuit, and energy recovery circuit, utilizing voltage negative feedback concept to magnify low input voltage into high output voltage. And, the use of the energy recovery circuit makes the whole power amplifier possess higher efficiency and less power supply energy. The simulation results of the whole power amplifier indicates that the power amplifier designed could excellently accomplish the magnification to the input signal, linearly and steadily with relatively high accuracy. In additon, based on the theory calculation and simulation to energy recovery circuit, it can be concluded that the power amplifier with energy recovery circuit could reduce the power-loss by about 50%, and simultaneously could need only an half of power supply energy to drive the actuator, compared with the power amplifier without energy recovery circuit.

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基于能量回收策略的压电致动器功率放大器设计

本文提出了一种具有能量回收策略的模拟电压功率放大器，用于驱动新型压电伺服泵的压电驱动器。整个功率放大器由直流电源、线性放大电路和能量回收电路组成，利用电压负反馈原理将低输入电压放大为高输出电压。并且，能量回收电路的使用使得整个功放具有更高的效率和更少的供电能量。整个功率放大器的仿真结果表明，所设计的功率放大器能很好地完成对输入信号的放大，线性稳定，精度较高。此外，通过对能量回收电路的理论计算和仿真，可以得出与不带能量回收电路的功率放大器相比，带能量回收电路的功率放大器可以降低50%左右的功率损耗，同时只需要一半的电源能量来驱动作动器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of 2011 International Conference on Fluid Power and Mechatronics

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