Method of driving step motor
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United States of America Patent
Stats
-
Jan 10, 2006
Grant Date -
Jul 31, 2003
app pub date -
Oct 16, 2002
filing date -
Jan 23, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of driving a step motor is provided which uses different operations of driving the step motor according to the driving speed of the driver, including a micro step operation for a low speed section of the driver and a full step operation for a high speed section of the driver. The method reduces low speed vibration and high speed noise caused by switching pulse noise. Moreover, driving the step motor by the full step operation in the high speed section reduces the frequency of use of a central processing unit (CPU), thereby stabilizing the driving device. In addition, only a small number of reduction gears is required, reducing the size of the driving device.
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