Linear Actuation System Having Face Coils and Side Coils for Armature Travel Assist
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United States of America Patent
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Issued Date -
Nov 7, 2019
app pub date -
May 1, 2018
filing date -
May 1, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A gas-fired heat pump has been built with a mechatronic system. Stators (a coil in a back iron) are provided at the ends of travel to draw armatures which are coupled to displacers from one end to the other. It has been found that such a system requires high current flow to draw the displacer when it is at a great distance from the stator. Additionally, it has been found to be difficult to control the current in the coils to ensure a soft landing. A linear actuation system is disclosed in which in addition to the stators at the end of travel (face stators) side stators are provided along the travel to control the linear actuator particularly during mid-travel.
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