A New Methodology for Vibration Error Compensation of Optical Encoders

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ID: 110902
2012
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Abstract
Optical encoders are sensors based on grating interference patterns. Tolerances inherent to the manufacturing process can induce errors in the position accuracy as the measurement signals stand apart from the ideal conditions. In case the encoder is working under vibrations, the oscillating movement of the scanning head is registered by the encoder system as a displacement, introducing an error into the counter to be added up to graduation, system and installation errors. Behavior improvement can be based on different techniques trying to compensate the error from measurement signals processing. In this work a new “ad hoc” methodology is presented to compensate the error of the encoder when is working under the influence of vibration. The methodology is based on fitting techniques to the Lissajous figure of the deteriorated measurement signals and the use of a look up table, giving as a result a compensation procedure in which a higher accuracy of the sensor is obtained.
Reference Key
lopez2012sensorsa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jesus Lopez;Mariano Artes;Lopez, Jesus;Artes, Mariano;
Journal sensors
Year 2012
DOI
10.3390/s120404918
URL
https://www.mdpi.com/1424-8220/12/4/4918
Keywords
vibration error compensation optical encoders

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