基于恒流源的改进型压电陶瓷高压驱动电源  

An Improved Piezoelectric Ceramic High Voltage Driving Power Based on Constant Current Source

作　　者：金学健 曹龙轩 冯志华[1] 

机构地区：[1]中国科学技术大学工程科学学院,安徽合肥230022

出　　处：《压电与声光》2017年第5期776-779,共4页Piezoelectrics & Acoustooptics

基　　金：国家科技支撑计划基金资助项目(2015BAK34B02)

摘　　要：恒流源压电陶瓷驱动电源具有结构简单及频响好等优点,但静态功耗高是其突出缺点。该文提出了一种改进的恒流源压电陶瓷驱动电源,在静态功耗一定的情况下,提高了其动态输出能力及竞争能力。该改进型压电陶瓷驱动电源的样机具有2.4~300V的输出电压范围,在静态恒定电流为0.1A时,动态输出电流最大可达0.44A。基于恒流源的高压驱动电源,驱动电压主要由驱动管的耐压决定,原理上可得到远高于现有高压运放的水平,在高压压电陶瓷驱动方面有广阔的前景。The piezoelectric ceramic driving power based on constant current source has the advantages of simple structure and good frequency response,but the outstanding shortcoming is that the static power consumption is usually very high.An improved piezoelectric ceramic power based on constant current source is presented in this paper.The dynamic output capability is greatly improved with certain static power consumption,enhancing the competitive ability significantly.A prototype device with an output voltage range of 2.4~300 Vis designed.The maximum dynamic output current is 0.44 Awhen the static constant current is 0.1 A.The driving voltage of a high-voltage driving power based on constant current source is mainly determined by the pressure of the drive tube.In principle,it can be much higher than the existing high-voltage operational amplifier level.Hence,the improved piezoelectric ceramic power has broad prospects in the area of driving high-voltage piezoelectric ceramic.

关 键 词：压电陶瓷 驱动电源 静态功耗 输出电流 高压 

分 类 号：TN722[电子电信—电路与系统]