Title:
MOTOR SYNCHRONIZATION APPARATUS
Document Type and Number:
WIPO Patent Application WO2001045246
Kind Code:
A3
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.
Inventors:
BROWN FRED A
JAUREGUI FRANCISCO
JAUREGUI FRANCISCO
Application Number:
PCT/US2000/042684
Publication Date:
February 07, 2002
Filing Date:
December 07, 2000
Export Citation:
Assignee:
COMAIR ROTRON INC (US)
International Classes:
H02P5/68; (IPC1-7): H02P6/06; H02P5/50
Foreign References:
| US4008425A | 1977-02-15 | |||
| US3940670A | 1976-02-24 | |||
| US4907105A | 1990-03-06 | |||
| US4680515A | 1987-07-14 | |||
| US5270622A | 1993-12-14 | |||
| US4197489A | 1980-04-08 |
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