Motor synchronization apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Oct 18, 2001
app pub date -
Dec 7, 2000
filing date -
Dec 8, 1999
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An apparatus for controlling the speed of a motor (having a coil) rotating a load synchronizes the rotational speed of the load with a reference signal. To that end, the apparatus includes a commutation circuit for energizing the coil, a tachometer for detecting the speed that the load is rotating, and a synchronization module that synchronizes the rotation of the load to the reference signal. The tachometer produces a speed signal representing the speed that the load is rotating. The synchronization module includes a reference input that receives the reference signal, a tachometer input that receives the speed signal, a speed control module that compares the reference signal with the speed signal to produce a control signal that controls the commutation circuit, and a commutation circuit output for forwarding the control signal to the commutation circuit, the commutation circuit energizing the coil as specified by the control signal.
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