System and method for three dimensional calibration of force plates

A force plate and algorithm technology, applied in the field of three-dimensional calibration, can solve problems such as inaccurate measurement and achieve the effect of improving accuracy
CN104813151AActive Publication Date: 2015-07-29ADVANCED MECHANICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ADVANCED MECHANICAL TECH
Publication Date
2015-07-29

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Abstract

A method for calibrating a force platform includes, providing a force platform and applying an nXm grid on a top surface of the force platform via a computing device. Next, applying p known loads on each of the nXm grid points of the top surface along a Z-axis being perpendicular to the X and Y axes and along the X and Y axes. Next, taking multipoint measurements at each grid point and for each applied known load along the X,Y and Z axes and generating six measured output signals, exact position coordinates and applied known load magnitude for each grid point. Next, assembling an array of nXmXp of six equations with six unknown for each grid point and applied known load and then solving the assembled equations and deriving a position and load specific calibration matrix for each grid point.
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Description

technical field

[0001] The present invention relates to a system and method for three-dimensional calibration of force plates, and more particularly to three-dimensional calibration of force plates that provide improved measurement accuracy and reduced crosstalk errors. Background technique

[0002] A force plate is a measuring device that measures ground reaction forces. Typically, the force plate is installed in the well pit so that its upper surface is flush with the ground. Then, the subjects were instructed to walk across or stand on the force plate, and the resulting ground reaction forces were recorded. Force plates are commonly used for investigation and clinical research in the fields of biomechanics, medical research, orthopedics, rehabilitation evaluation, prosthetic applications and engineering. In one embodiment, the force plate is used to measure the magnitude of stance sway of a person standing on the force plate. A force plate accomplishes this task by mea...

Claims

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