Patent ID: 6594567
Filing Date: 2003-07-15
Classification: E05F,E05Y,G05B

Abstract:
An automatic opening/closing device of a vehicular opening/closing body, comprising:a motor driven to open/close the opening/closing body, the motor halting a closing operation of the opening/closing body or inverting the closing operation to an opening operation when it is decided that a foreign object is jammed; and a controller for performing feedback control for a rotary pulse cycle of the motor to increase/decrease a duty in order to open/close the opening/closing body at a target speed and for determining, as jamming, a state where the rotary pulse cycle is not definitely decided before a jamming determining time comes, the jamming determining time being lowered much more than a standard pulse time corresponding to a target speed, wherein the duty is increased step by step until the rotary pulse cycle is definitely decided at a stage before the jamming determining time comes.