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visual3d:documentation:pipeline:force_commands:fp_type_2

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FP_Type_2

A type 1 Force Platform is an explicit representation of the Force Vector that specifies directly the Force, Center or Pressure, and Free Moment in the Force Platform Coordinate System.

Calculating the Force Signals in the Force Platform Coordinate System

[Original Analog]= Fx, Fy, Fz, COPx, COPy, Tz as specified by the ANALOG channel numbers


Pre-processing

These steps are common to all force platforms and are described here Compute Baselines

Average the Analog signals for the specified ZERO frames


Subtract Baselines


Force Vector

Force[X]= Fx Force[Y]= Fy Force[Z]= Fz


Center of Pressure

LengthConversion = Point units conversion to meters; e.g. for POINT units=mm LengthConversion=0.001

COP[X]= Mx*LengthConversion

COP[Y]= My*LengthConversion

COP[Z]= ORIGIN[Z]*LengthConversion


Free Moment

FreeMoment[X]= 0

FreeMoment[Y]= 0

FreeMoment[Z]= Tz


Transforming the Signals into the Laboratory Coordinate System

The transformation is defined by the location of the force platform corners, and is common to all force platforms.

visual3d/documentation/pipeline/force_commands/fp_type_2.1720027724.txt.gz · Last modified: 2024/07/03 17:28 by sgranger