Method and apparatus for issuing repair alerts in a...

Details Method and apparatus for issuing repair alerts in a... Method and apparatus for issuing repair alerts in a...

2008-05-06

2008-05-06

Barlow, Jr., John E. (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C702S182000

Reexamination Certificate

active

07369964

ABSTRACT:
White noise is applied to a servocontrol system of a servomotor in order to measure a frequency characteristic of a mechanical component in an electric injection molding machine, and a signal from an encoder is applied to a fast Fourier converter. Data from the fast Fourier converter is applied to a memory unit, and the content of the memory unit is displayed on a display unit in the form of a board diagram. Repair announcement is issued when a deviation of the resonant frequency of each mechanical component with respect to data at an initial setting time exceeds a predetermined value.

REFERENCES:
patent: 6053047 (2000-04-01), Dister et al.
patent: 6289735 (2001-09-01), Dister et al.
patent: 2001-175303 (2001-06-01), None
Pamphlet of sound wave type belt tension U-507, 5000 sheets issued by Gates Unitta Asia on Apr. 23, 2004.
English Translation of Japanese Patent Abstract published on Jun. 29, 2001 under Publication No. JP2001-175303.

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