其次对位置环的控制进行了改进，将位置前馈改进为速度前馈和加速度前馈，并在前向通路中增加了一个数字阶式滤波器组成复合运动控制器。
Secondly, the control of position loop was improved by using compound control with velocity and acceleration feed-forward control and digital notch filter control in feeding servo system.
通过计算导出了平均假频衰减与滤波器阶次及采样率的关系式。
A relation between average alias attenuation and filter order and sampling rate is derived from calculation.
利用这种方法，对典型的去耦式双二次二阶带通滤波器进行了计算机模拟及实验验证。
Using this method, the computer simulation and the experimental verification of a typical decoupled biquad second-order bandpass SCF are conducted.
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