Method for operating a positioning apparatus, and scanning...

Details Method for operating a positioning apparatus, and scanning... Method for operating a positioning apparatus, and scanning...

2005-05-17

2005-05-17

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S230000, C359S198100, C359S212100

Reexamination Certificate

active

06894271

ABSTRACT:
A method for operating a positioning apparatus that moves a positioning element comprises the steps of: generating a first and at least one further reference signal, the first reference signal corresponding to a first reference position and the further reference signal to a further reference position; generating a first and at least one further estimated value for the present position of the positioning drive; transferring the first reference signal and the estimated value to the positioning apparatus; establishing the first reference position using the positioning apparatus, and measuring the present position and generating a position signal that corresponds to the measured present position; transferring the further reference signal to the positioning apparatus; generating a further estimated value of the positioning drive position; transferring the further estimated value to the positioning apparatus; establishing the further reference position, and measuring a further present position and generating a further position signal that corresponds to the measured further present position; and cyclically repeating the steps at constant time intervals.

REFERENCES:
patent: 6037583 (2000-03-01), Moehler et al.
patent: 6072625 (2000-06-01), Kitahara et al.
patent: 19702752 (1998-07-01), None

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