real time digital filter 实时数字滤波器
Because the system of industrial control is a real-time system, digital filter fulfilled by software must be as fast as possible when they are running for decreasing effects to other works.
因为工控系统是一种实时系统，要求通过软件方法实现的数字滤波器在运行时能够尽可能的快，以减少对其它工作的影响。
On harmonic waves filtering off, digital filter is widely applied, and faster filtering algorithm means better real time characteristic and higher reliability.
谐波滤除中数字滤波器应用越来越多，较快的滤波算法意味着实时性好、可靠性高。
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