Patent ID: 8692493
Filing Date: 2014-04-08
Classification: E04B,E05D,E05F,E05Y,H02P

Abstract:
1. A motor control system for motivating a movable partition, comprising: a motor for mechanical coupling to the movable partition; a switching circuit operably coupled to the motor for selectively coupling the motor to a positive power source and a negative power source responsive to one or more PWM signals; an encoder configured for generating one or more rotation signals indicative of operational direction and operational speed of the motor; and a motor controller operably coupled to the switching circuit and the encoder and configured for improving airflow around foldable panels of the movable partition and reducing a billowing effect caused by air between the foldable panels by adjusting pulse widths of the one or more PWM signals from a previous pulse width to control a rotational speed of the motor responsive to a determination that the movable partition is in a position that is between a predefined position and a fully retracted position.