Method and apparatus for dynamic braking of a barrier operator

Details Method and apparatus for dynamic braking of a barrier operator Method and apparatus for dynamic braking of a barrier operator

2005-01-25

2005-01-25

Dang, Khanh (Department: 2111)

Electricity: motive power systems

Braking

Dynamic braking

C318S381000

Reexamination Certificate

active

06847178

ABSTRACT:
A method and apparatus for controlling a barrier movement operator comprising a controller that dynamically controls barrier operator braking to electronically slow, stop or reverse the motor in the barrier operator controller. The apparatus includes a source of electrical power for providing the necessary power to operate the apparatus, a converter for supplying power to a DC motor, and a controller for enabling dynamic braking of the movable barrier operator using electronic braking of the electric motor. The dynamic braking of the motor gradually slows movement of the barrier operator, thereby reducing forces acting on the motor and on the barrier.

REFERENCES:
patent: 4698622 (1987-10-01), Goto et al.
patent: 6175204 (2001-01-01), Calamatas
patent: 6278249 (2001-08-01), Fitzgibbon et al.
International Search Report, dated Mar. 19, 2003, in PCT application PCT/US02/30768.

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