1、限幅滤波法（又称程序判断滤波法）



A、方法：

根据经验判断，确定两次采样允许的最大偏差值（设为A）

每次检测到新值时判断：

如果本次值与上次值之差<=A,则本次值有效

如果本次值与上次值之差>A,则本次值无效,放弃本次值,用上次值代替本次值



B、优点：

能有效克服因偶然因素引起的脉冲干扰



C、缺点

无法抑制那种周期性的干扰

平滑度差

-1, limiting filtering method (also known as programs to gauge the filtering method) A, Method: based on experience and determined that the maximum allowable deviation of the two sample values (Set A) to a new value for each test to determine: If this value is the difference between the previous value of < = A, then this value is valid if the second value is the difference with the previous value of>　A, then this value is not valid, abandon the present value, using the last value instead of the present value of B, advantages: causal factors can effectively overcome the interference caused by pulse C, shortcomings can not suppress the interference of the kind of smoothness of periodic difference