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Heat & Motion Duke It Out

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Temperature changes hold the key to precision positioning applications.

Thomas Bartholomäus and Beda Espinzoa, Newport Corp.

The dominant cause of error in most motion applications is temperature or, more precisely, temperature change. Temperature alone affects the accuracy of any position measurement, and this error – linear – is either irrelevant or can be compensated for easily. However, temperature changes cause drift and affect repeatability or reproducibility, very real concerns for most high-precision motion applications. It is much more difficult to control or compensate for this. Any experimental setup or machine is made of materials such as steel, granite or aluminum, all of which inherently have...Read full article

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    Published: March 2009
    Featureshigh-precision motion applicationsindustriallinearthermal expansion coefficients

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