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Dual servo system consisting of a coarse stage and a fine motion stage with VCM and PZT is proposed.
This design combines the long stroke motion provided by a ball screw feed drive and a fine motion provided by a piezo actuator.
The dual-stage uses a fine motion platform (with high frequency response and short range) to actively reduce following errors of the coarse platform which has a lower bandwidth response.
We applied these insights to the center-surround configuration in a fine motion discrimination task that allowed simplified mathematical computations.
Using a fine motion discrimination task this study revealed that most information about discrimination performance are obtained from neurons tuned to directions that were around 60 70° away from the task direction, which exactly corresponds to the prediction of the FI model.
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The present paper describes the basic characteristics of a multilayer thin electrostatic actuator supported by lubricating oil rather than precise ball bearings for a fine-motion stage.
Thus, suitable driving signals have the potential to adjust the frictional effect for fine motion with a large holding force and a wide and fast motion.
In this paper, suitable driving signals for switching between two frictional conditions (i.e., low friction for the wide and fast motion and high friction for the fine motion with a large holding force) are examined and clarified.
Beyond imaging the ulcer itself, modern US studies have evaluated new indirect findings such as a fine trembling motion of echogenic structures inside the plaque, which was found 93% sensitive and 60% specific [77].
For both xy positioning systems, the same atomic force microscope head was used in determining the probe-sample distance and performing the z-axis motion (fine motion based on piezoceramic actuators and coarse approach based on a stick-slip actuator).
Because hand movement plays a critical role in the quality of life of TBI patients, we conducted fine motion evaluations of skilled forelimb reaching before and after TBIs.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com