基于压电效应的新型蓄能器设计

Design of a New Accumulator Based on Piezoelectric Effect

阐述压电效应以及普通气囊式蓄能器吸收压力脉动的原理。针对液压系统需要减少压力脉动的需求以及压电材料能将外界振动能量直接转变为可利用的电能的特点,设计一种压电式气囊蓄能器,相对于普通气囊式蓄能器,不仅能够更好地衰减液压系统中的压力脉动,还能将一定的振动能有效回收。

The principle of piezoelectric effect and air bag accumulator absorbing pressure-pulse were analyzed. Aiming at the requirement of decreasing pressure-pulse of hydraulic system and the feature that piezoelectric material could convert vibration energy to available electrical energy, a new piezoelectric air bag accumulator was designed. Comparing with normal air bag accumulator, pres- sure-pulse in hydraulic system is absorbed well, and certain vibration energy is recovered effectively by the designed accumulator.