可动态应用的压电陶瓷驱动电路的实验研究

对已有的PZT(压电陶瓷)驱动电路进行分析和改进,设计并完成了一个具有良好动态特性的PZT驱动电路。实验结果表明,对于多种不同的信号波形,此驱动电路都可以实时、线性、几乎无失真地将输入信号放大到驱动PZT所需的电压。利用正弦波作为输入信号时,测出了此驱动电路的频率响应范围。此外,发现当输入信号频率发生变化时,驱动电路消耗的功率也相应发生变化,经过作图分析可以得出驱动电路消耗的功率与输入信号频率是成线性关系。在文献中尚未见到研究PZT驱动电路消耗功率与输入信号频率相关性的报道。

Experimental study on the piezoelectric actuators driver for dynamic application

We have designed and accomplished a PZT driver with good dynamic response characteristics based on the traditional PZT driver. The experiments show that, the driver circuit can linearly amply many kinds of irregular signals with little distortion.When sinusoid signal is inputted, we measured the frequency response range of this circuit. Furthermore, we found that when the frequency of the input signal changed, the consumed power of the driver changed correspondingly. By analyzing the experiment data, we can find that the consumed power of driver is proportional to the frequency of the input siganl. To our knowledge, the correlation is seldom mentioned before.