METHOD AND DEVICE FOR LOAD DETECTION ON A SOLID STATE ACTUATOR/MOTOR DEVICE

摘要

The invention relates to a method for load detection on a solid state actuator/motor device (0), comprising a shaft (2), a drive body (4) with an opening (40), through which the shaft (2) runs and at least two solid state actuators (3) on the drive body (4), wherein the solid state actuators (3) may be controlled by a control parameter (u(t)) for activating the drive body (4) to set the shaft (2) in rotation, wherein a load torque (M) is determined by a parameter taken from a solid state actuator, a load dependent parameter (q(t)), arising from the load torque (M), being measured as the parameter at at least one of the solid stater actuators (3), a phase difference (?f) between the control parameter (u(t)) and the load-dependent parameter (q(t)) is determined and the load torque (M) determined by means of the phase difference (?f). The invention further relates to a device or circuit for carrying out said method.