Electricity: motive power systems – Automatic and/or with time-delay means – Sound – supersonic vibration or mechanical vibration
Patent
1989-07-10
1990-10-16
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Sound, supersonic vibration or mechanical vibration
310 51, 73660, F16F 1500
Patent
active
049638041
ABSTRACT:
A vibration reduction apparatus uses a electromagnetic exciter mechanism to reduce vibrations induced in a machine by a rotating component of the machine. The electromagnetic exciter mechanism employs a magnetic inertial mass coupled in a non-contacting manner externally on a housing of the machine remote from the vibration-inducing rotating component. To operate the electromagnet exciter mechansism, the apparatus employs a vibration sensor attached externally on the machine housing. The sensor senses the vibrations and generates an output signal representative thereof. Also, the apparatus employs signal processing units coupled to the machine for sensing the frequency of an electrical input power signal to the machine which drives the rotating component and generating an output signal representative thereof. The signal processing units also process the output signal representative of the induced vibrations together with the output signal representative of the input power frequency, compare the processed signals with a standard signal representative of previous vibration correcting signals and in response thereto produce and apply a new correcting signal to a power signal producing unit of the apparatus for modulating an input power signal to prodcue a corrected input power signal for operating the electromagnetic exciter mechanism to reduce the magnitude of vibrations induced at the preselected location on the machine housing by the rotating component.
REFERENCES:
patent: 2361071 (1944-10-01), Vang
patent: 3269320 (1966-08-01), Tilley et al.
patent: 3477665 (1969-11-01), Legrand
patent: 3566993 (1971-03-01), Leatherwood
patent: 3729691 (1973-04-01), Beiswinger et al.
patent: 3830099 (1974-08-01), Ichikawa
patent: 4025724 (1977-05-01), Davidson, Jr. et al.
patent: 4083433 (1978-04-01), Geohegan Jr. et al.
patent: 4372162 (1983-02-01), Shutt
patent: 4453770 (1984-03-01), Shiohata et al.
patent: 4541772 (1985-09-01), Becker
patent: 4550812 (1985-11-01), Mard
patent: 4614117 (1986-09-01), Taniguti
patent: 4626754 (1986-12-01), Habermann et al.
patent: 4633982 (1987-01-01), Swigert
patent: 4640770 (1987-02-01), Smith
patent: 4716347 (1987-12-01), Fujimoto
patent: 4761101 (1988-08-01), Zettl
patent: 4800306 (1989-01-01), Oberto
patent: 4806835 (1989-02-01), Habermann
patent: 4808863 (1989-02-01), Andersson
Articles entitled "Noise and Vibration in a Large Circulating Water Pump", No. 17, Nov. 1974, APE Engineering, pp. 27-32.
Reduction of Vibrational Torque in 2-Phase Servomotors Electric Power Applications, Oct. 1979, vol. 2, No. 5, pp. 161-166.
Shoop Jr. William M.
Westinghouse Electric Corp.
Wysocki A Jonathan
LandOfFree
Apparatus and method for reducing vibration of rotating machiner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for reducing vibration of rotating machiner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for reducing vibration of rotating machiner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-851686