Door control device

A door control device that stops a door rotatably supported by a vehicle body such that the door does not come into contact with an obstacle existing in a rotation range of the door by controlling a braking device that brakes the door, the door control device comprising:

• a distance calculation unit configured to calculate a distance from the door to the obstacle;
• a speed calculation unit configured to calculate an actual speed of the door;
• a braking force setting unit configured to set a braking condition indicating transition of a braking force applied to the door;
• a speed estimation unit configured to estimate, on a basis of the current actual speed, transition of an estimated speed of the door from start of braking based on the braking condition until the door stops;
• and
• a braking force correction unit configured, during braking based on the braking condition, to correct a braking force based on the braking condition such that the braking force is increased when a time gradient of the actual speed is more gradual than a time gradient of the estimated speed and to correct the braking force based on the braking condition such that the braking force is reduced when the time gradient of the actual speed is steeper than the time gradient of the estimated speed.