Electro mechanical brake, control device and control methods

The invention relates to an electro-mechanical braking device in which when a vehicle is suddenly stopped by turning off an ignition key switch (5) on a way of a slope road, a braking force maintaining control is not preformed, and it often occurs that the vehicle moves down along the slope road. To prevent such occurrence, an electro-mechanical braking device (22) for maintaining the braking force is provided so that the vehicle is parked securely. The electro-mechanical braking device (22) includes a parking brake mechanism (21) for maintaining the brake force even when an ignition key switch (power supply switch) (5) of the vehicle is turned off. When the power supply switch (ignition key switch) (5) of the vehicle is turned off with a braking pedal (2) being stroked or a braking operation signal being present, the parking-brake mechanism (21) is activated (the brake force is maintained).