Solid-state actuator drive device having a rotary shaft displaceable in

The invention relates to a solid-state actuator drive device (0) - a shaft (2) having a shaft axis (X), - comprises a drive means (11-14, 31-33), which solid-state actuators (11-14) for causing the shaft (2) into a shaft rotation (Ω) about the shaft axis (X) and - a control device (6) for applying a charge to the solid-state actuators (11-14), - wherein the control means (6) is coupled to a detector circuit arrangement or has a detector circuit arrangement for sensing and for providing a signal to a load which acts on at least one of which acts as a sensor solid-state actuators.