Precise Measurement of Displacement using Pixels

Manufacturing processes demand tight dimensional tolerances. The paper concerns a transducer for precise measurement of displacement, based on a camera containing a linescan chip. When tests were conducted using a track of black and white stripes with a 2mm pitch, errors in measuring on individual cycle amounted to 1.75%, suggesting that a precision of 35 microns is achievable.

Authors:

• Razif Mahadi
• John Billingsley

Keywords:

• Linescan
• microcontroller
• pixels.

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