| 摘要 |
<p>PURPOSE: A control device of opening speed in a door is provided to prevent an accident and the damage of the door by controlling opening speed of the door in opening the door while a vehicle is stopped on a slant. CONSTITUTION: A micom inputs signals of a parking brake switch(12), a horizontal slanting sensor of a ground stopped on a vehicle, a vertical slanting sensor(16) and a door switch(18). The micom outputs a control signal by deciding operating time of system according to logic established on the micom. Then, outputted current is converted into PWM(Pulse Width Modulation) type through a duty converter(20) to control a solenoid(50) via a solenoid driver(40). A stopper between door hinges is constricted with actuation of the solenoid to control opening speed of the door according to strength of electromagnetic force in the solenoid. A target current comparator(30) compares current controlled through the duty converter with consumption current of the solenoid by inputting the signal outputted from the micom. Moreover, the outputted signal is amplified by an amplifier and inputted again into the solenoid driver to compensate for an output current value according to gradient of the slant. Thereby, the opening speed of the door is normally controlled the same as a plain.</p> |
