JUL-AUG 2018

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14 INTECH JULY/AUGUST 2018 WWW.ISA.ORG Data filtering in process automation systems Removing unwanted data signal components or features By Joseph S. Alford, PhD, Brian M. Hrankowsky, and R. Russell Rhinehart A data filter is a device, algorithm, or process that removes some unwanted components or features from a data signal. The un - wanted component may be random noise (perhaps from mixing turbulence or mechanical vibrations), spurious outlier events (such as missed data packets or isolated spikes), or a periodic confusion (for instance from power or rotational harmonics).

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