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在智能控制系统中,控制和信息处理功能大多数是通过计算机来实现的。信号被输入计算机后往往要先进行适当的预处理,其目的是去除混杂在有用信号中的各种干扰信号。干扰信号分为周期性干扰和随机性干扰两大类。典型的周期干扰是50Hz的工频交流电干扰,工程实际中常采用模拟滤波(
In the intelligent control system, most of the control and information processing functions are realized by the computer. After the signal is input into the computer, it is often necessary to perform appropriate preprocessing to remove various interference signals mixed in the useful signal. Interference signals are divided into two categories: periodic interference and random interference. Typical periodic interference is 50Hz frequency AC interference, engineering often used analog filter (