一种压电陶瓷微位移器驱动电源研究

在研究压电陶瓷微位移器的基础上,针对压电陶瓷的驱动特点和要求,设计了一种驱动电源。以单片机Atmega128和高压运算放大器PA78为核心器件,以及相关电路构成电压控制型驱动电源。介绍了主要模块电路的功能和实现,并对驱动电源进行测试实验。驱动电源可输出0~300 V连续电压,分辨率可达10 mV、静态纹波＜5 mV。结果表明该电源具有线性度高、稳定性好、分辨率高等优点。

Study of a Piezoelectric Ceramic Micro-displacement Driving Power Supply

Based on the research of piezoelectric ceramic micro-displacement,a driving power supply is designed according to the driving characteristics and requirements of piezoelectric ceramic.The single chip microcomputer Atmega128 and high voltage operational amplifier PA78 are used as the core components with relevant circuits as the voltage control type driving power supply.The functions and realization of the main module circuits are introduced,and the driving power supply is tested.The driving power supply can output continuous voltage ranging from 0 V to 300 V with a resolution up to 10 mV a static ripple less than 5 mV,showing that the power supply has the advantages of good linearity,stability,and resolution.