Compensating sound waves with electroactive drive, using actuators arranged vibrating in housing forming at least one drive element with at least two actuator pairs together with clamping actuators and hub actuator

摘要

The method involves an additional actuator (15) being carried by the housing (9), and which is controlled in opposite phase to the clamping actuators (K1,K2). This is arranged approximately parallel to the working direction of the clamping actuators (K1,K2) in the housing (9). The control of the further actuator (15) results with approximately the doubled frequency of the control of one clamping actuator (K1 or K2). The phase of the control of the additional actuator (15) is adjustable.