摘要
介绍了压电陶瓷驱动电源的特点,研制了一种改进的误差放大式压电陶瓷驱动电源。该驱动电源采用串联型稳压电路生成直流高压,误差反馈控制电压取自受控压电陶瓷上的电压。通过增加反馈电容与隔离电阻来补偿负载电容带来的系统外部极点。实验证明,在3.13μF负载下该驱动电源输出峰值电流可达700mA,动态响应频率可达1kHz,纹波小于20mV,线性度高,稳定性好,结构简单,造价低。
The characteristics of piezoelectric ceramic actuator are introduced, and a piezoelectric actuator based on error amplifier is developed. The series voltage-stabilizing circuit is used to generate DC high voltage of the actua- tor, and its error feedback voltage is taken directly from the voltage of the controlled piezoelectric ceramic. The sys- tem external pole which is brought by the load capacitor is compensated by adding the feedback capacitor and the iso- lation resistor. The experiment verifies that when load capacitance is 3.13 μF, the actuator＇s peak output current is up to 700 mA, its dynamic response frequency is 1 kHz, and its output ripple is less than 20 mV. The actuator has good linearity and stability, simple structure and low cost.
出处
《压电与声光》
CAS
CSCD
北大核心
2014年第2期311-313,共3页
Piezoelectrics & Acoustooptics
基金
国家重大科学仪器专项"高端表面测量系列仪器研究与开发"基金资助项目(2011YQ160013)
