Electromechanical actuation assembly of an electromechanical brake (B1; B2) - with an electromechanical actuator having a downstream first mechanical drive transmission unit, - with a reversible power storage device having a downstream second mechanical drive transmission unit and - with a coupling device which can be rotated about an axis of rotation, which coupling device couples a mechanical actuation transmission unit on the one hand to a drive of the first mechanical drive transmission unit and on the other hand to a drive of the second mechanical drive transmission unit, wherein the mechanical actuation transmission unit is embodied as a first non-linear drive, such that it generates a non-linear lifting motion dependent on the angle of rotation (ω) of the coupling device, to which lifting motion a closing force (F closing) counteracting a reaction force (F reac) corresponds, and wherein the second mechanical drive transmission unit is embodied as a second non-linear drive, such that it introduces a non-linear second drive torque (M eccentr) dependent on the angle of rotation (ω) of the coupling device, which applies a portion (F eccentr) of the closing force, characterised in that the two non-linear drives (KTG, EG) are embodied for coordination such that in the case of at least one first angle of rotation (ω s) the actuation transmission unit, under the sole effect of the second drive torque, holds a predefined first lifting value (h s), and in the case of at least one second angle of rotation (ω p) the actuation transmission unit, under the sole effect of the second drive torque, holds a predefined second lifting value (h p), against the reaction force. - with an electromechanical actuator having a downstream first mechanical drive transmission unit, - with a reversible power storage device having a downstream second mechanical drive transmission unit and - with a coupling device which can be rotated about an axis of rotation, which coupling device couples a mechanical actuation transmission unit on the one hand to a drive of the first mechanical drive transmission unit and on the other hand to a drive of the second mechanical drive transmission unit, wherein the mechanical actuation transmission unit is embodied as a first non-linear drive, such that it generates a non-linear lifting motion dependent on the angle of rotation (ω) of the coupling device, to which lifting motion a closing force (F closing) counteracting a reaction force (F reac) corresponds, and wherein the second mechanical drive transmission unit is embodied as a second non-linear drive, such that it introduces a non-linear second drive torque (M eccentr) dependent on the angle of rotation (ω) of the coupling device, which applies a portion (F eccentr) of the closing force, characterised in that the two non-linear drives (KTG, EG) are embodied for coordination such that in the case of at least one first angle of rotation (ω s) the actuation transmission unit, under the sole effect of the second drive torque, holds a predefined first lifting value (h s), and in the case of at least one second angle of rotation (ω p) the actuation transmission unit, under the sole effect of the second drive torque, holds a predefined second lifting value (h p), against the reaction force.