Methods and apparatus for distance sensing used in combination with a linear actuator
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United States of America Patent
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Issued Date -
Jan 19, 2017
app pub date -
Jan 22, 2016
filing date -
Jan 23, 2015
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Abstract
A system and method for measuring a distance to a target work surface to precisely position a tool assembly coupled to an actuator. The method includes measuring a distance to a work surface using a distance sensor, moving the tool assembly into an approach position, the approach position being adjacent to a location on the work surface. The tool assembly is then moved from the approach position to the location on the work surface pursuant to a soft landing procedure. The soft landing procedure may include determining that the tool assembly has moved into soft contact with the target work surface. Methods also include topologically mapping a work surface, comparing map data to predefined data, and adjusting a positioning routine. Additionally, methods include optimizing actuator movements to timely measure distances from a distance sensor to a location on a work surface with minimal actuator movement.
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