The Pratt & Whitney Company, Inc.

Ksaira Corporation

Harold G Watts, Jr

Anthony J Christopher

Arthur W Johnson, Iii

Andre Sharon

Mark S Page

Frank Pretzch

Michael R Hunter

Randy E Thompson

There is provided a method and apparatus for automatically cleaning a portion of an optical fiber. One embodiment of the apparatus comprises a fluid tank assembly that holds cleaning fluid and comprises an aperture sized and arranged to receive the portion of the optical fiber, an ultrasonic generator, a clamping assembly, and a controller. The clamping assembly, in one position, holds the portion of the optical fiber in a position that is axially aligned with the aperture of the fluid tank assembly and disposed through the aperture of the fluid tank assembly. The clamping assembly further comprises a sealing assembly that forms a fluid seal about the portion of the optical fiber and a fluid seal of the aperture of the fluid tank assembly. The controller controls the ultrasonic generator to provide an ultrasonic signal to the fluid within the fluid tank assembly to clean the portion of the optical fiber.

Method and apparatus for cleaning an optical fiber

The cam lift data is analyzed (110) through the use of a fast fourier transform (FFT) (116) to thereby obtain FFT coefficients (118) which define the amplitude and frequency content of the cam lift data. Through a combination of the kinematic model and an inverse FFT procedure, an axis control function including a position control function (Eq. 1 and Eq. 14) is determined (128) for each axis. Dynamic compensation (130) of each axis is provided for system lags and inertia loads by altering the axis control function as a proportion of the axis velocity and acceleration (130), respectively. For each controlled axis an independent vector and a corresponding dependent vector containing axis control data is generated (132). During the actual control of first and second drive motors (72, 70) of the grinding machine, position and velocity feedback signals are generated for each axis by feedback devices (82, 78). A master/slave control arrangement is provided between the two axes wherein the positional feedback signal (186) from one axis is utilized in the control of the other axis to eliminate time lags between control of the two axes.

Method for generating axis control data for use in controlling a

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Holden, MA, United States of America

Harold G Watts, Jr