AUTOMATIC CONTROL SYSTEM AND METHOD TO MINIMIZE OSCILLATION IN CEILLING FANS

摘要

A fan system includes a fan and a fan rotation speed control. The speed control is operable to command the fan to rotate at a speed selected from a certain range of rotation speeds. A fan oscillation detector may be coupled with the fan to detect oscillation of the fan as the speed control is operated to rotate the fan at various speeds among the range of fan rotation speeds. The fan oscillation detector may comprise an accelerometer or other device. Oscillation amounts detected by the oscillation detector are compared against each other or against an oscillation threshold value. A programmer device identifies fan rotation speeds at which the oscillation amount exceeds the threshold or is otherwise unacceptable, and programs the fan rotation speed control to prevent an operator from being able to select those speeds at which the oscillation amount exceeds the threshold or is otherwise unacceptable.