Power-off motor deceleration control system

Details Power-off motor deceleration control system Power-off motor deceleration control system

1993-11-12

1995-06-20

Martin, David S.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318 64, 318478, 318376, 388847, 388904, 3889075, 360 71, 360 741, 360 90, H02P 701

Patent

active

054263557

ABSTRACT:
A system (20) for controlling deceleration of a motor (22) during an abrupt power-off condition includes a processor (40), a motor control circuit (50), and a secondary power source (70). During normal power-on operation and based on currently prevailing operation parameters, processor (40) routinely generates a contingent motor-governing deceleration signal for potential use in governing motor (22) should the power-off condition occur. In response to the occurrence of a power-off condition, motor control circuit (50) controls motor (22) in accordance with the contingent motor-governing deceleration signal to achieve orderly deceleration. Secondary power supply circuit (70) provides power to motor control circuit (50) during the power-off condition.

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