AUTOMATIC PENDULUM-DRIVE SYSTEM

摘要

A swing (10) includes a swing motor (62) and an adaptive control system (20) for periodically actuating the swing motor (62) to sustain swinging pendulum movement of a seat (18) along a swing arc in a manner that is compatible with the natural frequency (and period) of the seat (18). The swing (10) further includes a support stand (12) and a swing seat frame (14) mounted on the support stand (12) to carry the seat (10). The adaptive control system (20) includes an impulse mechanism (56) that applies a torque to the swing seat frame (14) and that is actuated at a variable point along the swing arc between first and second extreme positions and without regard to the position of the swing seat frame (14) relative to the support stand (12).