Position-measuring device and method for transmitting...

Details Position-measuring device and method for transmitting... Position-measuring device and method for transmitting...

2011-04-12

2011-04-12

Dunn, Drew A (Department: 2857)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Position measurement

C702S085000, C702S150000, C318S573000, C318S568240, C324S207250

Reexamination Certificate

active

07925462

ABSTRACT:
In a position-measuring device and a method for transmitting movement information from a position-measuring device to sequential electronics, the position-measuring device includes a position-measuring unit, a movement-measuring unit, an arithmetic logic unit and an interface unit. Position values of two objects in a measuring direction are measurable by the position-measuring unit. The movement-measuring unit is used to ascertain a movement value of the two objects. The position values and the movement value are supplied to the arithmetic logic unit which ascertains movement information in the form of a correction value that is suitable for calculating the movement value in sequential electronics from an instantaneous position value, at least one previous position value, a controller cycle time that indicates the time interval between the measurements of position values, and the correction value. The data-word length of the correction value is substantially less than the data-word length of the movement value.

REFERENCES:
patent: 5092051 (1992-03-01), Holmer et al.

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