COP (Center Of Pressure) threshold

The Center Of Pressure (COP) is the position of the center of the pressure on the force plate. It is calculated by QTM from the data of the pressure sensors in the corners of the force plate.

The COP (Center Of Pressure) threshold heading on the Force plate page contains settings for the COP threshold. When the Z component of the force is below the threshold level, the force vector will not be shown in QTM. The COP will be calculated though and accessible in the file.

Select the Activate check box to activate the COP threshold filter. Enter the Z axis COP threshold level in Newton to disable the visualization of the force vector and COP. The Z axis is in the force plate coordinate system, which means that it is always the vertical force which is used in the filter. This is because the horizontal forces can be very small but still correct.