Method and apparatus for controlling coordinate displacements of

Details Method and apparatus for controlling coordinate displacements of Method and apparatus for controlling coordinate displacements of

1995-10-03

1997-05-06

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318603, 359393, 2504911, G05D 310, G02B 2124, G01B 2100

Patent

active

056274424

ABSTRACT:
The apparatus includes a combination of a microscope and an interative image analysis system comprising a camera and a computer work station. The purpose of the apparatus is to facilitate the interactive control of coordinate displacements of the stage of the microscope. For each coordinate x and y an electromechanical control channel is established. At the input of the control channel two cascaded wheels in a coaxial arrangement and two angle encoders are used as a detached, independent tool which is not kinematically linked to the stage. In the middle of the control channel, the pulses of the angle encoders undergo a non-linear transformation. A processor performs a calculation which discriminates between slow displacements and fast displacements. At the end of the control channel, a flat, easily accessible platform of the microscope stage has two working areas, one for manual previewing and one for interactive scanning of a specimen.

REFERENCES:
patent: 4427332 (1984-01-01), Manriquez
patent: 4676608 (1987-06-01), Faubion
patent: 4695137 (1987-09-01), Jorgens et al.
patent: 5103338 (1992-04-01), Crowley et al.

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