针对容性负载的线性功率放大电路的稳定性设计  

Stability Design of Linear Power Amplifying Circuit for Capacitive Loads

作　　者：姚鹏[1] 刘岩[1] 张胜修[1] 

机构地区：[1]中国人民解放军第二炮兵工程学院基础部,陕西西安710025

出　　处：《现代电子技术》2010年第21期189-193,共5页Modern Electronics Technique

基　　金：第二炮兵工程学院创新性探索研究基金(XY2009JJB04)

摘　　要：针对容性负载,从线性功率放大电路稳定性设计的角度,以某压电执行器为研究对象,通过分析相关的设计指标,选择出适用的功率运算放大器;运用噪声增益和反馈零点这两种相位补法,提高了电路的稳定性,避免了超调和振荡,通过理论计算、模型仿真、实物检测相结合的方式,逐步地验证了所做的稳定性设计是有效的、可行的。Proceeding from stability design of a linear power amplifying circuit and taking a piezoelectric actuator as a research object,the appropriate power operational amplifier was selected for capacitive Loads on the basis of analysis of the relevant design specifications.Two methods for phase compensation of noise gain and feedback zero are adopted to improve the stability of the circuit to avoid overshoot and oscillation.The validity and feasibility of the stability design are verified gradually by theoretical calculation,model simulation and physical test.

关 键 词：容性负载 压电执行器 驱动电源 放大电路 相位补偿 SPICE 

分 类 号：TN710-34[电子电信—电路与系统]