Method of measuring natural frequency of motor

Details Method of measuring natural frequency of motor Method of measuring natural frequency of motor

1995-04-27

1997-07-01

Chilcot, Richard

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73593, G01H 1300

Patent

active

056440847

ABSTRACT:
A current feed means is connected to an armature coil of a motor. Current is fed from the current feed means to the armature coil while the frequency of the current is gradually varied from a preset frequency to another preset frequency, thereby to vibrate the motor. The amplitudes of the frequencies are measured by a frequency analyzer means, which is brought into contact with the motor. The frequency at which the amplitude of the vibration of the motor is peaked indicates the natural frequency of the motor.

REFERENCES:
patent: 3411344 (1968-11-01), Lloyd
patent: 3726129 (1973-04-01), Thorne
patent: 4078434 (1978-03-01), Weberhofer
patent: 4389891 (1983-06-01), Fournier
patent: 5257544 (1993-11-01), Khuri-Yakub et al.
patent: 5263372 (1993-11-01), Mastuzaki et al.
patent: 5495763 (1996-03-01), Rhodes et al.

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