Method for filtering digital signals which varies the filter len

Details Method for filtering digital signals which varies the filter len Method for filtering digital signals which varies the filter len

1993-09-07

1994-09-27

Malzahn, David H.

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31856818, G06F 1531

Patent

active

053512057

ABSTRACT:
Digital signals V(K), for use in numerical control of machine tools or robots, for example, are smoothed by means of digital filters to avoid sudden load changes on the axes. As a result, different filter lengths (N') can be used during an axial movement to accommodate varying loads on the axis. This is achieved by presetting modified discontinuous signals V'(K), whose value is determined by doubling the signal difference (D), and then dividing it by the altered filter length (N') less one, in the filter when changing the filter length.

REFERENCES:
patent: 4706003 (1987-11-01), Nakashima et al.
patent: 4928258 (1990-05-01), May
patent: 5004968 (1991-04-01), Mizuno et al.

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