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visual3d:documentation:visual3d_signal_types:kinetic_kinematic_data_type

KINETIC_KINEMATIC Data Type

The KINETIC_KINEMATIC folder contain intermediate data related to a Visual3D segment. This data describes the kinetic and kinematic information for the segment in question, represented in the laboratory coordinate system. In most cases there is no anatomical meaning to the laboratory, so these intermediate signals are rarely reported. In most cases kinetics and kinematics are reported as model-based items.

Computing Kinetic_Kinematic Data

KINETIC_KINEMATIC signals are computed when:

Using PROCESSED Signals

Under the settings menu there are three options:

  • Use Processed Analogs for Ground Reaction Force Calculations
  • Use Processed Forces for Segment to Force Assignments
  • Use Processed Targets for Model/Segment/LinkModelBased items

In most situations, you want “Use Processed Analogs” and “Use Processed Targets” set to TRUE and Use “Processed Forces” set to FALSE. If “Use Processed Analogs” and “Use Processed Targets” are checked (set to TRUE), then Visual3D will compute Kinetic_Kinematic signals using the data in the PROCESSED folder of the TARGET and ANALOG data types. If the PROCESSED folder does not exist for either of these data types then the respective ORIGINAL folder is used in its place.

The ORIGINAL Folder

The KINETIC_KINEMATIC data type's ORIGINAL folder contains a folder for each segment created in the model. These folders contain the KINETIC_KINEMATIC signals for that segment resolved in the Laboratory Coordinate System. These signals exist for reference; they cannot be processed or included in a Report Graph. Compute model-based data in order to create the desired LINK_MODEL_BASED signals.

The following signals are computed automatically for each segment:

AngAcc Angular Acceleration of the segment
AngVel Angular Velocity of the segment
CGPos Position of the segment's Center of Mass
CGVel Velocity of the segment's Center of Mass
CGAcc Acceleration of the segment's Center of Mass
DistEndPos The position of the segment's distal end
DistEndVel The velocityof the segment's distal end
ProxEndPos The position of the segment's proximal end
ProxEndVel The velocity of the segment's proximal end
ProxEndForce The Joint Reaction Force at the segment's proximal end
ProxEndTorque The Joint Moment at the segment's proximal end
SegResidual The result of the least squares fit of the tracking markers at each frame of data.

Signals relating to Force Assignments

If a segment is assigned to a force, then 3 additional KINETIC_KINEMATIC signals are also created.

Force_n Assigned Forces
COP_n Assigned Center of Pressure
Free_Moment_n Assigned Free Moment
visual3d/documentation/visual3d_signal_types/kinetic_kinematic_data_type.txt · Last modified: 2024/11/15 13:40 by wikisysop