Actuator system comprising a control arrangement and an actuator, wherein the actuator, which is expandable in a predefined direction, comprises - piezoelements arranged in a stacked fashion, - first and second internal electrodes (5, 3) arranged alternately between the piezoelements, - a first external electrode, which is electrically conductively connected to the first internal electrodes, - a second external electrode, which is electrically conductively connected to the second internal electrodes, - a plurality of actuator sections (81, 82, 83, 84, 85) comprising a first actuator section (81, 82, 83, 84, 85), which is arranged in the predefined direction relative to a second actuator section (81, 82, 83, 84, 85), wherein the second external electrode comprises separate electrode segments (21, 22, 23), which are electrically conductively connected in each case to the second internal electrodes in one of the actuator sections (81, 82, 83, 84, 85) or in a group of the actuator sections (81, 82, 83, 84, 85), characterized in that, by means of the control arrangement, a first control signal (U1, U2, U3, U4, U5, U6) can be applied to the first actuator section (81, 82, 83, 84, 85) or a first group of actuator sections (81, 82, 83, 84, 85) and a second control signal (U1, U2, U3, U4, U5, U6) can be applied in a time-shifted manner to the second actuator section (81, 82, 83, 84, 85) or a second group of actuator sections (81, 82, 83, 84, 85) in such a way that the first control signal (U1, U2, U3, U4, U5, U6) is at the first actuator section or the first group of actuator sections in a time-delayed manner with respect to the second control signal (U1, U2, U3, U4, U5, U6) at the second actuator section or the second group of actuator sections, so that the elastic partial waves generated by the control signals during the expansion of the actuator in the respective actuator sections or groups of actuator sections are superimposed. - piezoelements arranged in a stacked fashion, - first and second internal electrodes (5, 3) arranged alternately between the piezoelements, - a first external electrode, which is electrically conductively connected to the first internal electrodes, - a second external electrode, which is electrically conductively connected to the second internal electrodes, - a plurality of actuator sections (81, 82, 83, 84, 85) comprising a first actuator section (81, 82, 83, 84, 85), which is arranged in the predefined direction relative to a second actuator section (81, 82, 83, 84, 85), wherein the second external electrode comprises separate electrode segments (21, 22, 23), which are electrically conductively connected in each case to the second internal electrodes in one of the actuator sections (81, 82, 83, 84, 85) or in a group of the actuator sections (81, 82, 83, 84, 85), characterized in that, by means of the control arrangement, a first control signal (U1, U2, U3, U4, U5, U6) can be applied to the first actuator section (81, 82, 83, 84, 85) or a first group of actuator sections (81, 82, 83, 84, 85) and a second control signal (U1, U2, U3, U4, U5, U6) can be applied in a time-shifted manner to the second actuator section (81, 82, 83, 84, 85) or a second group of actuator sections (81, 82, 83, 84, 85) in such a way that the first control signal (U1, U2, U3, U4, U5, U6) is at the first actuator section or the first group of actuator sections in a time-delayed manner with respect to the second control signal (U1, U2, U3, U4, U5, U6) at the second actuator section or the second group of actuator sections, so that the elastic partial waves generated by the control signals during the expansion of the actuator in the respective actuator sections or groups of actuator sections are superimposed.