Apparatus for controlling deceleration of DC motor

Details Apparatus for controlling deceleration of DC motor Apparatus for controlling deceleration of DC motor

2005-08-16

2005-08-16

Fletcher, Marlon T. (Department: 2837)

Electricity: motive power systems

Braking

Dynamic braking

C318S375000, C318S373000, C318S757000, C318S763000, C318S432000, C318S434000

Reexamination Certificate

active

06930458

ABSTRACT:
An apparatus for controlling deceleration of a DC motor which is driven in a forward operating direction with a forward-drive electric current applied thereto by a forward driving device, wherein the forward motor driving device applies the forward-drive electric current in the form of pulses to the DC motor during its deceleration, and wherein a plugging-braking device operable while the motor is subjected to a regenerative brake or operated in a non-braked state is operated to apply a reverse-drive electric current in the form of pulses to the motor, to apply a plugging brake to the motor, such that at least one pulse of the reverse-drive electric current follows every predetermined number of pulses of the forward-drive electric current. The plugging-braking device may be replaced by a dynamic braking device operable to short-circuit the motor to apply a dynamic brake to the motor, with at least one pulse of a dynamic-brake current following every predetermined number of pulses of the forward-drive electric current.

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patent: 4628232 (1986-12-01), Saganovsky et al.
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patent: 04-017594 (1992-01-01), None
patent: 2003-189651 (2004-12-01), None

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