Wiper system and a vehicle with such a wiper system

A wiper system, comprising:

• a wiper arm, on which a wiper blade for cleaning a surface of an object to be cleaned is provided;
• a first electrical motor for driving the wiper arm to swing by a pivot shaft connected to the wiper arm;
• a second electrical motor fixed to a housing accommodating the pivot shaft;
• a sensor for measuring a parameter representing a position of the wiper arm on the object to be cleaned;
• and
• a control unit for receiving said parameter from said sensor and utilizing said parameter to control a rotation angle of an output shaft of the second electrical motor, such that the output shaft rotates the wiper blade under control to change a rotation angle of a central plane of the wiper blade with respect to the wiper arm,
• wherein the pivot shaft is hollow, and the output shaft of the second electrical motor, which is different from the first electrical motor, is connected to a gear set comprising a torque transmission shaft passing through the hollow portion of the pivot shaft,
• wherein the torque transmission shaft is different from the output shaft.