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AssigneeCarl Zeiss Jena GmbH
InventorsTobias Kaufhold, Ralf Joram
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The invention is directed to a method for the synchronized control of a plurality of stepping motors SM1, SM2 . . . SMn which serve as drives in a feed system, wherein the stepping motors SM1, SM2. . . SMn are controlled with a base frequency fa and a cycle of the base frequency fa is proportional to a given step length SL. According to the invention, different step lengths SL1, SL2 . . . SLn are triggered with each cycle of the same base frequency fa in the individual stepping motors SM1, SM2 . . . SMn, wherein a specific step length SL1 is associated with stepping motor SM1, a specific step length SL2 is associated with stepping motor SM2, and so forth. Accordingly, it is no longer required to provide separate control frequencies for every stepping motor. All stepping motors can now be controlled at the same frequency and only a counter unit or timer unit is required for all stepping motors of the positioning system.
Method for the synchronized control of a plurality of stepping motors SM1, SM2 . . . SMn which serve as drives in a feed system, wherein the stepping motors SM1, SM2 . . . SMn are controlled at a base frequency fa and a cycle of the base frequency fa is proportional to a given feed step length SL, characterized in that different step lengths SL1, SL2 . . . SLn are triggered with each cycle of the same base frequency f, in the individual stepping motors SM1, SM2 . . . SMn, wherein a specific step length SL1 is associated with stepping motor SM1, a specific step length SL2 is associated with stepping motor SM2, and so forth.
Method according to one of the preceding claims, characterized in that paths with characteristic feed positions, preferably starting positions, reversing positions and/or stopping positions, are assigned to the individual stepping motors SM1, SM2 . . . SMn within the feed system, and the step lengths SL1, SL2 . . . SLn and equivalents k2, k3 . . . kn, depending on the distances between characteristic feed positions on the paths, are predetermined in such a way that the feed on the paths is caused at different speeds when all stepping motors SM1, SM2 . . . SMn are controlled with the same sequence of cycles of the base frequency fa, so that the characteristic feed positions are reached at the conclusion of the sequence on all paths
Dependencies are inferred from the claim text.