摘要
叙述了基于自适应滤波中的自适应干扰抵消原理,从负载电流中消去基波有功分量,从而得到所需补偿的电流值的自适应检测法。介绍了IIR(无限冲击响应)数字滤波器的算法结构,并给出了直接Ⅱ型滤波器结构图,设计了3阶巴特沃思低通数字滤波器,利用Matlab对其进行建模和仿真,验证了该滤波器能有效地补偿谐波,表明了该控制方法的可行性。
The article proposed an approach which is based on adaptive filter theory that can remove base band power from payload to get expected current. IIR （infinite impulse response） digital filter structure is also introduced in the paper. And a structure design for direct II type adaptive filter is also provided. A 3-step butterworth low pass digital filter is also designed as simulator in the simulation test for the performance of the adaptive filter. Simulation and mold building in Matlab environment proves that this adaptive filter can effectively get expected current from mixture of expected current and base band payload current. The effective and efficiency of this adaptive filter is proved.
出处
《电测与仪表》
北大核心
2007年第10期12-15,共4页
Electrical Measurement & Instrumentation
