Motor control device and corresponding control method
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United States of America Patent
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Apr 6, 2010
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N/A
app pub date -
Mar 16, 2005
filing date -
Apr 5, 2004
priority date (Note) -
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Abstract
The aim of the invention is to provide a speed control method for reducing current ripple and speed ripple at constant dynamics behavior while reducing the hardware required to a minimum. For this purpose, a control signal, especially a speed deviation (ev) is divided up into at least two signal portions (evhi and evlo). Every one of the at least two signal portions (evhi and evlo) is processed in a different manner. The low-order portion (evlo) can be smoothed by means of a low-pass filter (F). In an adder (Sum6) mounted downstream thereof the differently processed signal portions are then added up for further control.
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