Complex mass trajectories for improved haptic effect
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United States of America Patent
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Jul 14, 2020
Grant Date -
Jun 20, 2019
app pub date -
Oct 29, 2018
filing date -
Feb 11, 2014
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Abstract
A haptic actuator includes mechanical links defining a first J-trajectory and mechanical links defining a second J-trajectory as well as a motor coupled to the mechanical links so as to synchronously accelerate a first mass over the first J-trajectory and a second mass over the second J-trajectory. During a first time interval, reactive forces of the first mass accelerating substantially balance reactive forces of the second mass accelerating and during a second time interval reactive forces of the first mass accelerating do not substantially balance reactive forces of the second mass accelerating. This un-balanced condition results in a tap signal being produced.
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