Method for generating a control function and method for operating a scanning unit
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United States of America Patent
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Jun 25, 2019
Grant Date -
Nov 16, 2017
app pub date -
May 12, 2017
filing date -
May 13, 2016
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Abstract
A method for generating a control signal is provided. The method includes the steps of decomposing a desired movement into two partial movements which are separately equalized, and the desired control signal is obtained by summing up the corrected components. The first movement is a slowly (mostly linear) changing long-period (period T1) movement, and the second movement is a short-period (period T2) movement, wherein the period T1 is substantially longer than the period T2. The movements have to a large extent opposing temporal derivations which are nevertheless equal in magnitude so that their sum has a time derivative that is zero. In addition, a method is provided for operating a scanning unit periodically displaceable in an infeed direction by an infeed distance.
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