工频干扰是仪器仪表信号中的重要干扰因素，要消除它，人们通常采用滤波方法， 而采用自适应滤波的方法， 可以取得较好的效果。-Frequency interference is an important instrument signal disturbances, to eliminate it, people usually use filtering method, and the use of adaptive filtering method, you can achieve bett