基于电荷控制的压电陶瓷驱动电源研究
关键词 电荷 压电陶瓷 电源 漏电流
毕业论文设计说明书外文摘要
Title Study on driving power of piezoelectric ceramic technology
based on charge control
Abstract
The development of nano technology makes people to study the operation object from macro aspect gradually deep into the microcosmic field. As a result, the piezoelectric ceramic drive technology is more and more widely used in the field of dynamic positioning. The performance of the driver, such as the efficiency and the stability of the drive power, have a great influence on the dynamic performance of the piezoelectric ceramics.. Voltage control type piezoelectric ceramic drive power supply of the effective bandwidth is narrow, can not meet the demand of high precision places, and the traditional charge control type piezoelectric ceramic drive power is more serious leakage current phenomenon, limit the dynamic performance of the drive power. To solve these problems has important significance. Based the principle of analysis of the traditional charge control type power driven by balance compensation resistance and charge integral feedback combination method, as far as possible to reduce the leakage current, a novel based on the charge of apex company high voltage operational amplifier PA92 control driving power for piezoelectric ceramics.
Keywords Charge；Piezoelectric ceramics；Power Supply；Leakage current
目 次
1 引言 1
1.1 压电陶瓷驱动电源技术发展概况 1
1.2 国内外研究现状2
1.3 电荷控制型压电陶瓷驱动电源技术的优势5
1.4 本文的研究内容及结构安排6
2 传统的电荷控制型压电陶瓷驱动电源技术的原理及分析 7
3 新型高动态电荷控制型压电陶瓷驱动电源技术11
3.1 电荷控制型压电陶瓷驱动电源设计原理 11
3.2 硬件选取 12
3.3 电荷型驱动电源电路设计 13
3.4 电路分析15
4 本文综述18
结论20
致谢 21
参考文献22
附录A24
图1 驱动电源电路设计图25
图2 驱动电源电路设计图25
图3 电路幅频特性响应图26
1 引言
1.1 压电陶瓷驱动电源发展概况
压电控制特别是对压电陶瓷驱动电源的控制一直得到来自全世界的注目，世界范围内对压电陶瓷控制技术已经有了大量的研究，对于各种场合下对精度和频响的各种需求，设计出了不同原理的压电陶瓷驱动电源[1]，通常可以分成针对静态应用的电压驱动型和针对动态应用的电荷驱动型两种类型[2]。
1.1.1 电压控制型
电压控制型原理为压电陶瓷本身具有逆压电效应：位移和电压两者间近似成比例[3,4]，由此利用调节压电陶瓷上的电压来调节压电陶瓷片的位移。电压控制型大体上分为基于直流变换的开关式和直流放大式两种。
开关式基于直流变换原理，其功率损耗较小，而且效率高、体积较小，不过其有较大的高频干扰，频响范围也相对较窄。而直流放大式在高频的适应更好，且其频响范围也相对较宽，因此，随着高压运放的技术的不断进步，直流放大式的日趋完善，这类电源研究已经成为这个领域的主要趋势[5]。