Method and apparatus using a closed loop controlled actuator...

Details Method and apparatus using a closed loop controlled actuator... Method and apparatus using a closed loop controlled actuator...

2005-06-07

2005-06-07

Bennett, G. Bradley (Department: 2859)

Geometrical instruments

Gauge

With support for gauged article

C033S556000

Reexamination Certificate

active

06901677

ABSTRACT:
An apparatus for profiling the surface of a workpiece, including a probe adapted to make contact with the surface of a workpiece, a sensor for determining or deriving the force between the probe and the workpiece surface, an actuator that adjusts the position of the probe along an axis, which is generally perpendicular to the surface of the workpiece, in order to maintain a constant force between the probe and the surface, and a closed control loop, including a controller that controls the operation of the actuator based on information from the sensor.

REFERENCES:
patent: 4513507 (1985-04-01), Laskowski
patent: 4778313 (1988-10-01), Lehmkuhl
patent: 4910446 (1990-03-01), McMurtry et al.
patent: 5189806 (1993-03-01), McMurtry et al.
patent: 6327788 (2001-12-01), Seddon et al.
patent: 6519860 (2003-02-01), Bieg et al.
patent: 6668466 (2003-12-01), Bieg et al.
patent: 6707230 (2004-03-01), Smith et al.
patent: 2003/0079358 (2003-05-01), Nai et al.

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