Volume 36, Number 5, October 2018
|Page(s)||949 - 954|
|Published online||17 December 2018|
Influence of the Storage Energy Capacitance on Their Electrical Output Characteristics of Piezoelectric Ceramic during the Process of High-Velocity Impact
School of Equipment Engineering, Shenyang Ligong University, Shenyang
In order to reveal influence of external capacitance on the voltage input and input energy provided by the PZT-5H piezoelectric ceramic composite structure under high-speed impact loading, experiments have been performed by using one-stage light gas gun loading system combining with a power supplier circuit and power output testing system, which the aspect ratio of 1:1 column projectile impact monolithic and multi-piece piezoelectric ceramic composite structure at the near impact velocity and different storage capacity. The experimental results show that the more larger storage capacitance is, the smaller the piezoelectric ceramic output voltage is. However, the smaller of the capacitor voltage is, the smaller the value of energy storage is; with the energy storage capacitance increasing, the piezoelectric capacitance ratio and the energy conversion rate of piezoelectric ceramics decreases; In addition, the storage energy capacitor increases with the increasing of the piezoelectric ceramic layers; the relationships of storage energy capacitor and piezoelectric ceramic capacitor has a great influence on the input voltage and storage energy for storage energy capacitor.
Key words: PZT-5H piezoelectric ceramic power supplier / high-speed impact / storage energy capacitor / electrical characteristics / design of experiments
关键字 : PZT-5H压电陶瓷电源 / 高速撞击 / 储能电容 / 电特性 / 实验设计
© 2018 Journal of Northwestern Polytechnical University. All rights reserved.
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