MEMS device mechanical amplitude control
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United States of America Patent
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Feb 27, 2018
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app pub date -
May 28, 2015
filing date -
May 28, 2015
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Abstract
A system and/or method for utilizing mechanical motion limiters to control proof mass amplitude in MEMS devices (e.g., MEMS devices having resonant MEMS structures, for example various implementations of gyroscopes, magnetometers, accelerometers, etc.). As a non-limiting example, amplitude control for a MEMS gyroscope proof mass may be accomplished during normal (e.g., steady state) gyroscope operation utilizing impact stops (e.g., bump stops) of various designs. As another non-limiting example, amplitude control for a MEMS gyroscope proof mass may be accomplished utilizing non-impact limiters (e.g., springs) of various designs, for example springs exhibiting non-linear stiffness characteristics through at least a portion of their normal range of operation.
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