Enhanced resolution pulse width modulation control

Details Enhanced resolution pulse width modulation control Enhanced resolution pulse width modulation control

1995-11-06

1996-12-31

Grimm, Siegfried H.

Modulators

Pulse or interrupted continuous wave modulator

Pulse width modulator

318599, 318811, 375238, H03K 708

Patent

active

055898050

ABSTRACT:
A pulse width modulation system provides for enhanced output resolution through software control. The pulse width modulation control system normally has a control period during which the pulse width modulation state assumes a predetermined one of a plurality of output states. The method herein toggles between two adjacent output states during any single control period to effectuate a resultant system response characteristic of a system having a greater number of available output states. Furthermore, certain preferred implementations may also suppress undesirable harmonic excitation of the system through quasi-random toggling.

REFERENCES:
patent: 5023535 (1991-06-01), Miller et al.

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