| 摘要 |
PROBLEM TO BE SOLVED: To take actions with high accuracy by providing a calculating device detecting the voltage and current change quantities of a motor and a calculating device comparing the voltage and current change quantities of the motor with the prescribed threshold values, and stopping or reversing the motor when the voltage change quantity is the threshold value or below and the current change quantity is the threshold value or above. SOLUTION: This opening/closing control device is constituted of a calculating device 12 made of a CPU, relay driving devices 13, 14 driving the opening or closing of a window, relays 15, 16 driving the contact points switching a circuit, a motor 17, and a current detecting device 18. The calculating device 12 monitors the motor voltage. When the voltage change quantity is below a prescribed value, its effect on the current change quantity and the speed change is small. When the current change quantity and the revolving speed change quantity exceed the prescribed values, insertion is detected. When the voltage change quantity is the prescribed value or above, its effect is large, the prescribed value is changed to reduce the effect on detection, and erroneous detection is reduced. The erroneous detection of insertion is prevented when the motor current is increased by the fluctuation of the motor voltage. |
