Electromechanical brake, wear adjustment device and method for operating an electromechanical brake

An electromechanical brake comprising:

• an actuator;
• a transmission unit;
• a brake lining;
• and
• a friction surface, wherein:
• actuator moves in a limited actuator operating range;
• the actuator executes a lining stroke via the transmission unit in at least a portion of its actuator operating range, which presses the brake lining towards and against the friction surface in order to generate a press-on force as well as a resulting braking torque for braking;
• the transmission unit displays a non-linearity, i.e., a transference ratio which is not constant over at least a part of the actuator actuation range;
• the transference for the transmission unit is selected and/or designed in such a way that at least two subsections with differently acting non-linearities are therefore created along the actuator operating range;
• and
• the two differently acting non-linearities are selected from the following non-linearities:
• a. non-linearities for overcoming an air gap between brake lining and friction surface,
• b. non-linearities for determining the contact point of the friction surface and the brake lining,
• c. non-linearities for achieving a minimum braking effect,
• d. non-linearities for generating an increasing braking torque,
• e. non-linearities for operation with lowered electrical power requirement,
• f. non-linearities for rapidly achieving high braking effects,
• g. non-linearities for measuring parameters and/or setting parameters,
• h. non-linearities for reducing electrical stresses and mechanical stresses during lining stroke start,
• i. non-linearities for compensation for brake fading,
• j. non-linearities for wear readjustment.