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Related Experiment Video

Updated: Jun 22, 2026

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Published on: July 25, 2013

Design of two-dimensional zero reference codes by means of a global optimization method.

José Sáez-Landete, José Alonso, Eusebio Bernabeu

|June 5, 2009

Summary

This study presents an optimized method for designing two-dimensional zero reference marks. These marks are crucial for accurate absolute position measurement in multi-axis systems, improving signal clarity.

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Last Updated: Jun 22, 2026

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules

Published on: July 25, 2013

Area of Science:

Metrology
Optical Measurement Systems
Computational Design

Background:

Absolute position measurement relies on reference marks for accurate positioning.
Designing effective one-dimensional and two-dimensional reference marks for multi-axis systems presents significant challenges.
Existing methods for reference mark design are complex and may not yield optimal signal characteristics.

Purpose of the Study:

To develop an optimized method for designing two-dimensional zero reference marks.
To enhance the signal quality of reference marks used in absolute position measurement systems.
To address the complexities in designing reference marks for two-axis measurement.

Main Methods:

Utilized a global optimization approach to determine optimal two-dimensional zero reference mark designs.
Focused on maximizing the central peak of the generated reference signal through computational design.
Employed autocorrelation principles for position measurement using the designed reference marks.

Main Results:

Successfully calculated optimal two-dimensional zero reference marks.
The optimized marks generate a reference signal with a significantly higher central peak.
The proposed method offers a powerful solution for designing complex reference marks.

Conclusions:

The global optimization method is effective for designing high-performance two-dimensional zero reference marks.
This approach improves the accuracy and reliability of absolute position measurement in two-axis systems.
The findings provide a valuable tool for advancing metrology and optical measurement technologies.