Constant speed controlling device and method
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United States of America Patent
Stats
-
Feb 25, 2003
Grant Date -
Jul 18, 2002
app pub date -
Jan 18, 2001
filing date -
Jan 18, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a constant speed controlling device and method to be applied in the electric devices or vehicles which need to be operated automatically at constant speeds. The constant speed controlling device includes a detector for detecting a running speed of the electric device driven by a prime mover to generate a feedback signal, a controller electrically connected with the detector for converting the feedback signal to a digital signal to be compared with a predetermined value representative of the selectively designed speed so as to generate a control signal, and a driving device electrically connected with the controller for adjusting an output power of the prime mover and driving the prime mover corresponding to the control signal so as to allow the electric device to run at the selectively designed speed.
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