Tuned vibration absorbers for AC motors

Details Tuned vibration absorbers for AC motors Tuned vibration absorbers for AC motors

1994-07-01

1996-01-02

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 3722, F16F 7104, F16F 1510

Patent

active

054811422

ABSTRACT:
A tuned vibration absorber is mounted on a motor armature of an AC synchronous motor. The tuned vibration absorber provides an anti-resonance which significantly attenuates the 120 Hz angular velocity pertibation of the AC motor. The tuned vibration absorber has a hub, which attaches to the armature of the AC motor. An inertia ring is connected to the hub via spokes. The spokes and inertia ring provide a torsional resonance to the motor, which attenuates the angular velocity error generated by the AC motor. Due to the reduction in 120 Hz velocity error, the motor can be used in digital printing apparatus with strict motion quality requirements.

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J. P. Den Hartog, Mechanical Vibrations, McGraw-Hill, 4th edition, 1956, pp. 86-93.

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