Wiper device for vehicle and control method thereof

A vehicle wiper device comprising:

• a wiper motor;
• a control unit that drives the wiper motor to be reciprocally rotated and controls a rotation speed of the wiper motor;
• and
• a wiper reciprocally rotating by receiving a reciprocal rotation of the wiper motor to reciprocally wipe a wiped surface of a vehicle with a blade rubber, wherein a tilt direction of a lip part of the blade rubber changes when a rotation direction is reversed,
• wherein
• the control unit is configured to accelerate a rotation speed of the wiper motor, in a first acceleration section where a tilt direction of the lip part is changed, from 0 to a first speed which is a low speed at a first average acceleration, and to rapidly accelerate the rotation speed of the motor, in a first half of a second acceleration section subsequent to the first acceleration section, to reach a speed which is higher than the first speed and ½ times of a second speed at an average acceleration which is twice or more of the first average acceleration.