Patent ID: 6650076
Filing Date: 2003-11-18
Classification: G05B

Abstract:
A method for moving a powered gate through an opening or closing cycle in a predetermined desired time period comprising the steps of:a) providing a gate that is mechanically connected to be moved by a power unit, wherein power to the power unit is regulated by a microprocessor, b) providing power to the power unit and measuring the power required of the power unit to move the gate, c) executing a program with the microprocessor to determine the effective inertia or mass of the gate based on the power drawn by the power unit, d) further executing the program with the microprocessor to determine an acceleration profile calculated to move the gate from a start position to a predetermined end position in a predetermined desired time, and, e) executing the program to attenuate the power provided the power unit to cause the gate to move from the start position to the predetermined end position in the desired period of time.