Reducing engine noise by active oscillatory torque control

Details Reducing engine noise by active oscillatory torque control Reducing engine noise by active oscillatory torque control

1988-12-05

1991-09-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

73650, 310105, F16F 1522, G05D 1702

Patent

active

050497685

ABSTRACT:
Noise and vibration in a structure are reduced through application to the structure of an oscillatory torque. An electromechanical energy converter provides the oscillatory torque when the input signal to the electromechanical energy converter has a frequency and harmonics thereof required to counteract the noise and vibration desired to be attenuated.

REFERENCES:
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patent: 4803409 (1989-02-01), Horikawa
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patent: 4995139 (1991-02-01), Suzuki
Sneckenberger et al, "Active Synchronization Control of the Gyroscopic Vibration Absorber", Trans. ASME Journal Engr. for Industry, v. 97, No. 4, pp. 1354-1358, 4 Nov. 75.

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