一种用于电流测量的椭圆滤波器的仿真与设计  

Simulation and Design of the Elliptical Filter for Current Measurement

作　　者：高振宇[1] 赵龙章[1] 李加杰[1] 

机构地区：[1]南京工业大学自动化与电气工程学院,江苏南京211000

出　　处：《测控技术》2014年第3期151-153,共3页Measurement & Control Technology

摘　　要：针对控制器电流测量电路输入信号存在纹波电流干扰的问题,设计了一种基于运算放大器的椭圆有源低通滤波器。该滤波器截止频率为10 Hz,通带增益为40 dB,对其进行了仿真分析,并且与同样性能指标的普通滤波器进行了比较,椭圆滤波器的幅频响应曲线在通带内增益平稳,过渡带特性较窄。For the problem of the ripple current lnterterence incurrent measurement circuit used in controller,an ellipse active low-pass filter is designed based on operational amplifier. The filter cut-off frequency is 10 Hz, the pass-band gain is 40 dB. The simulation of the filter is also analyzed. Compared with the same perform ance indicators of ordinary filter, the amplitude-frequence response curve of elliptic filter is more smooth in the pass-band gain, and the characteristic of transition zoon is more narrow.

关 键 词：频率特性 通带增益 椭圆 低通滤波器 

分 类 号：TN713.8[电子电信—电路与系统]