Patent ID: 7067996

Claim:
An open-and-close control system for an openable apparatus driven by a drive motor, comprising a drive motor section having a drive motor for opening and closing an openable apparatus; an opening-and-closing operation command section that outputs a command signal for opening or closing operation of the openable apparatus; a drive motor control section that controls the drive motor for opening or closing the openable apparatus based on the opening or the closing operation command signal; a rotation speed detection section that detects a rotation speed of the drive motor; a rotation speed alteration section that alters the rotation speed during the closing operation of the openable apparatus; and an obstruction release control section that determines whether an obstruction is present in the openable apparatus during the closing operation and controls the drive motor for releasing the obstruction according to determination of the presence of the obstruction, wherein the obstruction release control section corrects a value related to the rotation speed during the closing operation by compensating for an amount of reduction in the rotation speed produced by rotation speed reducing operation of the rotation speed alteration section, and the obstruction release control section performs the obstruction determination based on the corrected value, wherein: the value is a rotation speed obtained during the closing operation; and the obstruction release control section corrects the obtained rotation speed by compensating for the amount of reduction in the rotation speed produced by the rotation speed reducing operation and performs the obstruction determination based on the corrected rotation speed.