Method and apparatus for active damping of vibration

Details Method and apparatus for active damping of vibration Method and apparatus for active damping of vibration

1994-02-18

1997-06-10

Voeltz, Emanuel T.

Boots, shoes, and leggings

381 71, G10K 1116

Patent

active

056383045

ABSTRACT:
For active damping of vibration at a location subjected to a primary vibration field, a vibratory wave is generated by adaptive filtering of a reference signal and interferes with the primary field at the location. The residual amplitude of vibration at the location is measured, and filtering is adapted automatically to cancel the residual amplitude as measured. The reference signal is divided into a plurality of individual reference signals that are sine-shaped each containing only one of the plurality of frequencies at which the primary field presents a significant energy, with each individual signal being subjected to a respective adaptive digital filter, and the vibratory wave is generated from the sum of the individual filtered signals. An apparatus for implementing the method comprises n processing paths or channels, each having an actuator driving a digital filter, fed with a sine-shaped signal at a frequency corresponding to a concentration of vibratory energy to be damped.

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