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《Journal of Beijing University of Chemical Technology(Natural Science Edition)》 2006-03
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A novel modified real-time two-pass filter based digital integration scheme

FENG Kun MA Bo JIANG Zhi-nong(Diagnosis Self-recovery Engineering Center,Beijing University of Chemical Technology,Beijing,100029 China)  
This paper discusses the origin of signal integration,the problems associated with it,and some solutions.The key problem restricting extension of digital integration technology is that the low frequency noise makes the digital integrator very unstable.In this work,a modified two-pass filter algorithm is used in the noise cancellation.After a comparative study of the algorithm properties and efficiency range behavior of many integrators,an optimal digital integration algorithm is chosen.In this paper,a novel integration process combining the new two-pass filter and the optimal integrator is described.This approach allows an accurate measurement of phase and amplitude.Computer simulation proves that our approach is feasible.
【CateGory Index】: TP202.4;TN713
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