WIDE-BAND MOTION SENSOR SYSTEM FOR A VEHICLE, BASED ON AN ELECTROACTIVE COMPOSITE MATERIAL
The invention relates to a method for monitoring the state of a vehicle component and/or industrial-system component (20), comprising: - operating a sensor device (10) in order to generate a sensor signal which is induced by a motion characteristic of the vehicle component and/or industrial-system component (20), the sensor device (10) being mounted on the vehicle component and/or industrial-system component (20) and having an electroactive composite material; and - evaluating the sensor signal in order to extract a first vibration frequency and a second vibration frequency of the vehicle component and/or industrial-system component (20), the first vibration frequency being in a high-frequency range of 10 kHz to 1 MHz, and the second vibration frequency being in a low-frequency range of below 10 kHz.