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1. (WO2018099631) ACTIVE VIBRATION ABSORPTION SYSTEM FOR ABSORBING VIBRATION OF A VIBRATING ELEMENT, MOTOR VEHICLE HAVING THE ACTIVE VIBRATION ABSORPTION SYSTEM, AND METHOD FOR OPERATING THE ACTIVE VIBRATION ABSORPTION SYSTEM

Pub. No.:    WO/2018/099631    International Application No.:    PCT/EP2017/075116
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Oct 05 01:59:59 CEST 2017
IPC: G10K 11/178
F16F 7/10
H04R 29/00
Applicants: AUDI AG
Inventors: DREFFKE, Gerald
HINRICHSEN, Lars
BOCK, Florian
Title: ACTIVE VIBRATION ABSORPTION SYSTEM FOR ABSORBING VIBRATION OF A VIBRATING ELEMENT, MOTOR VEHICLE HAVING THE ACTIVE VIBRATION ABSORPTION SYSTEM, AND METHOD FOR OPERATING THE ACTIVE VIBRATION ABSORPTION SYSTEM
Abstract:
The invention relates to an active vibration absorption system (10) for absorbing vibration of a vibrating element (12). The vibration absorption system (10) comprises a body-borne sound exciter (14) having a coupling element (16) for coupling to the vibrating element (12) and having an electrical coil (18) for moving the coupling element (16) by means of a coil current (20). The body-borne sound exciter (14) is designed to provide a measurement signal (22) correlated with a sensed induced voltage. Furthermore, the vibration absorption system (10) comprises a control device (24), which is designed to determine a setpoint current strength of the coil current (20) in accordance with the measurement signal (22) and to control a measured current strength of the coil current (20) to the setpoint current strength. The setpoint current strength is designed to set the motion of the coupling element (16) in such a way that the vibration of the element (12) is at least partly absorbed. Furthermore, the control device (24) is designed to determine a detection component and a control component from the measurement signal (22) and to determine the setpoint current strength in accordance with the detection component.