SYSTEM AND METHOD FOR DETERMINING A FREQUENCY AND/OR FREQUENCY CHANGE OF A DRIVE OSCILLATION OF AN INERTIAL SENSOR

A system having an inertial sensor and an evaluation unit. The inertial sensor is configured to excite an oscillatory structure of the inertial sensor to execute a drive oscillation, so that an output data rate of the inertial sensor is derived as a function of a frequency of the drive oscillation. The evaluation unit has a reference clock generator and is configured to ascertain the output data rate of the inertial sensor as a function of a reference frequency of the reference clock generator and to determine the frequency and/or frequency change of the drive oscillation as a function of the ascertained output data rate. Alternatively, the inertial sensor is configured to receive a reference clock signal of the reference clock generator from the evaluation unit and to determine the frequency and/or frequency change as a function of the transmitted reference clock signal.