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AssigneeCarl Zeiss Industrielle Messtechnik GmbH
InventorsGuenter Grupp, Berndt Kammleiter
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A machine, such as a coordinate measuring machine, uses a material measure with a periodic division in order to determine spatial positions of a working or measuring head. The periodic division of the material measure is further subdivided by means of interpolation values. For the purpose of correcting interpolation errors, the head is moved to a plurality of positions and a plurality of position data is determined. The plurality of position data represents a position curve of the head. A periodic component in the position curve is determined, which periodic component corresponds approximately to the periodic division of the material measure. Correction values for correcting the interpolation values are determined such that the periodic component is at least reduced.
A method for correcting interpolation errors of a machine having a mobile head and a position measurement device for determining movement positions of the head, wherein the position measurement device includes a material measure with a periodic division, and wherein interpolation values which further subdivide the periodic division are used for determining the movement positions, the method comprising the steps of:
A machine comprising a mobile head, comprising a position measurement device for determining movement positions of the head, the position measurement device having a material measure with a periodic division, comprising a processor for determining interpolation values which further subdivide the periodic division, and comprising a unit for determining correction values for correcting the interpolation values, wherein the unit comprises a first part designed for recording a position curve having a plurality of position data which corresponds to the changing positions of the head, wherein the unit further comprises a second part designed for determining a periodic component in the position curve, the periodic component having a period which corresponds approximately to the periodic division of the material measure, and wherein the unit comprises a third part designed for determining the correction values such that the periodic component is at least reduced.
A data storage medium where program code is stored, which program code is designed for running on a control computer of a machine having a mobile head, a position measurement device for determining movement positions of the head, the position measurement device having a material measure with a periodic division, and having a processor for determining interpolation values which further subdivide the periodic division, wherein the program code is designed to execute a method comprising the steps of:
Dependencies are inferred from the claim text.