ACTIVE VIBRATION NOISE SUPPRESSION APPARATUS

摘要

Provided is an active vibration noise suppression apparatus having good robustness without determining a secondary transfer function while not performing adaptive control. A first control unit generates a control signal by a first adaptive algorithm as a direct adaptive algorithm. A storing unit stores an equivalent value Gh of a secondary transfer function G which is adaptively updated as an adaptive filter by the first control unit. A second control unit uses a second adaptive algorithm which uses the equivalent value Gh of the secondary transfer function G stored in the storing unit as a feedforward coefficient and updates a filter coefficient C2 of the control signal as an adaptive filter based on the feedforward coefficient. The second control unit generates the control signal by the second adaptive algorithm when the first control unit does not generate the control signal.

主权项

1. An active vibration noise suppression apparatus for actively suppressing vibration or noise at an evaluation point by driving a drive device based on an actively updated control signal, which comprises:
a first control unit generating a control signal by a first adaptive algorithm, the first adaptive algorithm is a direct adaptive algorithm using at least a filter coefficient C1 of the control signal and an equivalent value Gh of a secondary transfer function G from a point of outputting the control signal to the evaluation point as adaptive filters respectively; a storing unit for storing the equivalent value of the secondary transfer function which is adaptively updated as an adaptive filter by the first control unit; and a second control unit generating the control signal by a second adaptive algorithm when the control signal is not generated by the first control unit, the second adaptive algorithm is using the equivalent value of the secondary transfer function stored in the storing unit as a feedforward coefficient and updating a filter coefficient C2 of the control signal as an adaptive filter based on the feedforward coefficient.