The principle of voltage controlled tracking filters is introduced and a new design method is presented, which can pick up exterior signals more accurately with high signal-to-noise ratio.

• 摘要介绍压控式跟踪滤波器的原理，并提出一种新的设计方法，较高精度地提取外部信号，信噪比高，同时将该方法运用在动平衡机检测电路中。